Article
Engineering, Electrical & Electronic
H. H. Gullu, D. Seme Sirin, D. E. Yildiz
Summary: This study presents the fabrication method of a n-4H SiC diode and its characteristics, investigates rectification behavior at different temperatures using I-V measurements, calculates barrier height and ideality factor based on the TE model, and observes that the ideality factor is approaching unity near room temperature, revealing the influence of localized barrier patches on current conduction.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Guoqing Shao, Juan Wang, Yanfeng Wang, Wei Wang, Hong-Xing Wang
Summary: In this study, we demonstrated the fabrication and operation of a vertical diamond Schottky barrier diode (SBD) as a high-performance temperature sensor. We comprehensively investigated the current transport mechanism and temperature sensor properties of Zr/p-diamond SBD. The results showed outstanding performances of the Zr/p-diamond SBD at room temperature and across a wide temperature range.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Multidisciplinary Sciences
Sungjae Hong, Chang-Ui Hong, Sol Lee, Myeongjin Jang, Chorom Jang, Yangjin Lee, Livia Janice Widiapradja, Sam Park, Kwanpyo Kim, Young-Woo Son, Jong-Gwan Yook, Seongil Im
Summary: Graphene has been widely used as an insertion layer in vertically stacked devices due to its excellent electrical tunabilities. However, its implications at ultrahigh frequencies have been rarely explored. In this study, diode operation of vertical Pt/n-MoSe2/graphene/Au assemblies at a cutoff frequency of about 200 GHz was demonstrated. The electric charge modulation by the inserted graphene becomes essentially frozen above a few GHz frequencies, transforming the Ohmic graphene/MoSe2 junction into a pinning-free Schottky junction. The diodes with graphene insertion exhibit much lower total capacitance and an order of magnitude higher cutoff frequency compared to devices without graphene, highlighting the significance of graphene at high frequencies.
Article
Physics, Multidisciplinary
R. Khalil, H. El-Desouky, R. Sobhy, M. K. El-Mansy
Summary: The purpose of this study is to investigate the electrical properties of nano metal-semiconductor heterojunctions based on Poly Vinyl Alcohol (PVA). The results showed that the PVA doped silver nanoparticles (AgNPs-PVA) exhibited both Ohmic contacts and rectifying behavior. The conduction mechanism, dielectric relaxation, and current-voltage behavior of the PVA-AgNPs nanocomposite film were thoroughly examined. The presence of a thin barrier layer on the surface of the dried polymer nanocomposites was found to be responsible for the non-Ohmic electrical behavior.
Article
Chemistry, Physical
Yangyang Gao, Zhourui Xu, Xusheng Tian, Qian Feng, Xiaoli Lu, Chunfu Zhang, Jincheng Zhang, Yue Hao
Summary: The study focused on tin-assisted pure phase n-type ZrO2-doped epsilon-Ga2O3 films grown on epi-GaN/sapphire substrates using pulsed laser deposition. The thin films were characterized for their crystal structure and electrical properties, with a Schottky barrier diode exhibiting high rectification ratio and breakdown voltage. Interface states density and trap energy levels were also analyzed, showing promising results for potential applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
D. E. Yildiz, H. H. Gullu, H. Kanbur Cavus
Summary: Effects of TiO2 contribution and two different dopings, graphene oxide (GO) and rubidium fluoride (RbF), are investigated at the interface of Au/n-Si metal-semiconductor (MS) diode. The barrier height and ideality factor of the diodes are compared with and without doping in the interface layer. It is found that the values decrease with the addition of GO and RbF. The resistance effect is discussed using Norde's and Cheung's functions and the carrier transport mechanism is evaluated under the presence of interface states. The study also investigates the photo-generated carrier contribution and photo-response of the diodes using a solar simulator with different illumination intensities.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Aniruddh Bahadur Yadav, Gopal Rawat, Basavaraj S. Sannakashappanavar
Summary: This paper presents the preparation of Sn doped ZnO thin films using a low-cost chemical sol-gel spin coating process and the deposition of Ohmic and Schottky electrodes to form a Metal-Semiconductor-Metal (MSM) structure. The UV detection capability of the device was analyzed through electrical characterization, and various parameters including saturation current, ideality factor, and barrier height were calculated. The results showed an increase in forward and reversed bias current when exposed to UV light, and the responsivity and series resistance of the device were also reported.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ali Baltakesmez, Betul Guezeldir
Summary: In this study, the effect of chlorine doping on GUAPbI3-xClx perovskite film formation and device applications was investigated. The results showed that chlorine doping improved the structure and performance of GUAPbI3-xClx perovskite film. The MIS and FET devices fabricated using GUAPbI3-xClx showed promising performance parameters, indicating the potential application of chlorine-doped perovskite materials in optoelectronic devices.
SURFACES AND INTERFACES
(2023)
Article
Physics, Multidisciplinary
Yan Da-Wei, Tian Kui-Kui, Yan Xiao-Hong, Li Wei-Ran, Yu Dao-Xin, Li Jin-Xiao, Cao Yan-Rong, Gu Xiao-Feng
Summary: In this study, the T-I-V characteristics of GaN-based Schottky diodes were measured to investigate the transport mechanisms and low-frequency current noise behaviors under various injection levels. The results show that different current mechanisms dominate in different bias regions, with conductive dislocations being mainly responsible for excessive leakage current. The analysis reveals the impact of Schottky barrier height fluctuations on transport at higher frequencies and currents.
ACTA PHYSICA SINICA
(2021)
Article
Physics, Applied
Hao Wu, Xuanwu Kang, Yingkui Zheng, Ke Wei, Yue Sun, Pengfei Li, Xinyu Liu, Guoqi Zhang
Summary: This letter reports the reverse leakage mechanism of thin-barrier AlGaN/GaN Schottky barrier diode for the first time, revealing trap-assisted tunneling and Schottky edge leakage as dominant mechanisms. Thinning the barrier was found to effectively suppress Schottky edge leakage.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Liang Sun, Lifeng Zhu, Chunli Zhang, Weiqiu Chen, Zhonglin Wang
Summary: This study utilizes flexoelectricity to control the performance of silicon-based SBDs, finding significant impact on various performance indicators. Current-voltage characteristics of the SBD under different tip forces were measured using C-AFM, confirming the important role of flexoelectricity.
Article
Chemistry, Multidisciplinary
Huaixun Huyan, Zhe Wang, Linze Li, Xingxu Yan, Yi Zhang, Colin Heikes, Darrell G. Schlom, Ruqian Wu, Xiaoqing Pan
Summary: Defect engineering in perovskite thin films has received extensive attention due to their atomic-level modification and the design of novel nanostructures. However, three-dimensional defect-assisted nanostructures in thin film matrices usually have large misfit strains and unstable structures. In contrast, one- or two-dimensional defect-assisted nanostructures embedded in thin films can sustain large misfit strains without relaxation, making them suitable for defect engineering in perovskite thin films.
Article
Physics, Condensed Matter
B. Guzeldir, A. Baltakesmez, M. Saglam
Summary: This study examined the microstructural properties of Silicon carbide (SiC) thin film deposited by radio frequency (RF) sputtering technique and the effects of SiC as an interlayer on the barrier parameters of n-GaP/Pd and n-InP/Pd junctions comparatively.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Ceramics
M. Chakraborty, E. S. Kadir, R. N. Gayen
Summary: By varying the graphene oxide (GO) content, the modification of UV photo-response characteristics in transparent titanium dioxide-graphene oxide (TiO2-GO) nanocomposite thin films was studied. The presence of GO improves the optical band gap of TiO2 without affecting its transparency. The fabricated metal-semiconductor (MS) Schottky junctions with TiO2-GO nanocomposite thin films show rectifying behavior and improved UV response characteristics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
N. Tugluoglu, O. Pakma, U. Akin, O. F. Yueksel, S. Eymur, S. Sayin
Summary: In this study, the temperature dependent barrier properties of Au/NAMA/n-Si Schottky diode in the low temperature range of 80-330 K were investigated. The analysis based on thermionic emission theory revealed that the barrier height decreases and the ideality factor increases with decreasing temperature, which can be attributed to barrier height inhomogeneities. The results indicated the presence of double Gaussian distributions and the mean barrier height values varied with temperature. Evaluation of the modified Richardson curve provided further insights into the barrier properties.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
M. Terlemezoglu, O. Surucu, M. Isik, N. M. Gasanly, M. Parlak
Summary: Nickel oxide thin films were deposited using the radio frequency magnetron sputtering technique. The structural and morphological properties of the films were analyzed using X-ray diffraction (XRD), scanning electron microscopy, and energy-dispersive X-ray analysis. The films were found to have a cubic phase of nickel oxide with a preferential orientation of (200) direction, and the surface morphology was observed to be uniform and smooth. Optical properties of the films were studied using Raman spectroscopy and temperature-dependent transmittance spectroscopy, and the band gap energy of the films was obtained using Tauc relation and derivative spectroscopy techniques. Furthermore, the relationship between the band gap energy and temperature was investigated using the Varshni optical model, and the absolute zero band gap energy, rate of change of band gap energy, and Debye temperature were determined as 3.57 eV, - 2.77 x 10(-4) eV/K, and 393 K, respectively.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Polymer Science
D. E. Yildiz, H. H. Gullu, H. Kanbur Cavus
Summary: Effects of TiO2 contribution and two different dopings, graphene oxide (GO) and rubidium fluoride (RbF), are investigated at the interface of Au/n-Si metal-semiconductor (MS) diode. The barrier height and ideality factor of the diodes are compared with and without doping in the interface layer. It is found that the values decrease with the addition of GO and RbF. The resistance effect is discussed using Norde's and Cheung's functions and the carrier transport mechanism is evaluated under the presence of interface states. The study also investigates the photo-generated carrier contribution and photo-response of the diodes using a solar simulator with different illumination intensities.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
B. Baris, M. Yildirim, S. Karadeniz, A. Karabulut, A. Kose, D. E. Yildiz
Summary: We synthesized a Mn-doped complex and presented it in an Au/Mn-complex/n-Si structure as an interfacial layer. The devices exhibited decreased barrier heights and junction resistance with increasing Mn dopant, and increased sensitivity to light with increasing light intensity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
T. Bektas, M. Terlemezoglu, O. Surucu, M. Isik, M. Parlak
Summary: This paper reports the structural and optical properties of Sn1-xSbxSe (x = 0.4) layered single crystals grown by the vertical Bridgman method. The crystal structures and layered characteristics were observed using X-ray diffraction and scanning electron microscopy. The optical properties were revealed through Raman, ellipsometry, and transmission measurements, indicating that Sn1-xSbxSe (x = 0.4) layered single crystals could have potential applications in photovoltaics and optoelectronics.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
O. Surucu, M. Isik, M. Terlemezoglu, T. Bektas, N. M. Gasanly, M. Parlak
Summary: CuSbSe2 thin film was prepared by co-evaporation, and its structural, morphological, and optical properties were investigated. The film exhibited an orthorhombic crystalline structure with a nearly uniform surface. The optical analysis showed a small band gap energy and a room temperature direct band gap.
Article
Materials Science, Multidisciplinary
Adem Kocyigit, Dilber Esra Yildiz, Ali Akbar Hussaini, Dursun Ali Kose, Murat Yildirim
Summary: In this study, Cu-and Mn-centered nicotinamide/nicotinic acid complexes were synthesized and used as interfacial layer for Schottky type photodiodes. Metal semiconductor heterojunctions (Al/Cu-complex/p-Si and Al/Mn-complex/p-Si) were fabricated and evaluated under various light power intensities through I-V and I-t analyses. The devices were assessed based on diode parameters obtained from I-V characteristics data and various photodetection parameters calculated from the I-t measurements. The results demonstrate the potential of using heterojunctions for photodiode applications.
CURRENT APPLIED PHYSICS
(2023)
Article
Physics, Multidisciplinary
H. H. Gullu, D. E. Yildiz, S. O. Hacioglu, A. Cirpan, L. Toppare
Summary: The structure and properties of Al:LiF/PTQBT:PCBM/PEDOT:PSS/ITO/glass organic diodes are investigated, and factors affecting forward bias characteristics and reverse current flow, such as parasitic resistance, non-ideal barrier height, and ideality factor, are identified.
Article
Materials Science, Multidisciplinary
Tunc Bektas, Ozge Surucu, Makbule Terlemezoglu, Mehmet Parlak
Summary: In this study, Sn-Sb-Se thin films were deposited by thermal evaporation and the effect of annealing on the films' structural, optical, and electrical properties were investigated. XRD measurement revealed that annealing at 300 degrees C resulted in the best crystalline quality, and structural parameters were determined using XRD data. SEM and AFM measurements showed surface deformation after annealing at 400 degrees C. UV-Vis spectroscopy measurement demonstrated a high absorption coefficient, indicating a direct band gap. The band gap and activation energies of the as-grown sample were determined to be 1.59 eV and 106.1 meV, respectively. The results of SEM, AFM, XRD, Raman, UV-Vis spectroscopy, and temperature-dependent photoconductivity measurements were discussed throughout the paper.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Physics, Multidisciplinary
B. Baris, D. E. Yildiz, S. Karadeniz, D. A. Kose, M. O. Erdal, M. Yildirim
Summary: In this study, Mn doped complexes were synthesized and used as interfacial layers in Au/Mn-complex/n-Si structures. The morphological analysis showed relatively smooth and well ordered surfaces. The electrical properties, including dielectric, electrical modulus, resistance, interface states, and ac conductivity, were investigated at various frequencies and voltages. The results indicated that capacitance and conductivity exhibited strong frequency dependence.
Article
Chemistry, Multidisciplinary
Gokhan Surucu, Aysenur Gencer, Ozge Surucu, Md. Ashraf Ali
Summary: The Li5AuP2 compound is studied in detail to investigate its unique chemical properties of gold. Pressure is applied to reveal its structural, mechanical, electronic, and dynamical properties. The thermal, electronic, and optical properties of the compound are obtained and analyzed. This study provides valuable information for future research on gold chemistry.
Article
Materials Science, Multidisciplinary
M. Isik, O. Surucu, N. M. Gasanly
Summary: GaSe0.75S0.25, as a potential semiconductor compound, shows hexagonal structure and has a band energy of 2.34 eV. The GaSe0.75S0.25 thin film grown on a glass substrate was also successfully obtained on a silicon wafer, forming a p-GaSe0.75S0.25/n-Si heterojunction. Temperature-dependent current-voltage (I-V) measurements were conducted to characterize the electrical properties of the heterojunction, revealing a decrease in the ideality factor and an increase in the barrier height with increasing temperature. The conduction mechanism was investigated considering the Gaussian distribution of barrier height inhomogeneity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Crystallography
Mustafa Unal, Ozden Basar Balbasi, Salar H. Sedani, Mehmet Can Karaman, Gulcin Celik, Deniz Bender, Ayse Merve Genc, Mehmet Parlak, Basit Turan
Summary: Production of CdZnTe crystals for radiation detector applications is challenging due to its structural characteristics and segregation behavior of dopants and Zn. In this study, indium-doped Cd0.9Zn0.1Te single crystals grown via the Vertical Gradient Freeze (VGF) technique were compared in terms of dopant segregation and electrical properties. Zn segregation coefficient was found to be 1.35 while In segregation coefficient was 0.4 for the VGF method. Excessive In doping and variation of Zn throughout the ingot degraded the detector performance.
JOURNAL OF CRYSTAL GROWTH
(2023)
Article
Multidisciplinary Sciences
Tugce Sevinc Dag, Gokhan Surucu, Aysenur Gencer, Ozge Surucu, Faruk Ozel, Yasemin Ciftci
Summary: This study investigates the photocatalytic water splitting performance of NixW6Se8(x=1,2,3,4) Chevrel phases. Density Functional Theory (DFT) is used to study the electronic properties and stability of NiW6Se8 and Ni2W6Se8 compounds. It is found that NiW6Se8 is suitable for both reduction and oxidation reactions, while Ni2W6Se8 is only suitable for the reduction reaction. This study is the first attempt to study Chevrel phases in detail and identify a suitable compound for photocatalytic water splitting.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Optics
Emre Coskun, Cansu Emir, Semanur Selamet, Mehmet Parlak, Serhat Ozder
Summary: The Generalized Stockwell Transform (GST) was used to analyze a transmittance signal and continuously determine the refractive index and extinction coefficient. The method involves analyzing the oscillation frequencies of the transmission signal and has been proven to have advantages in the locally referenced phase property. The validity of the method was confirmed through the analysis of a CdS thin film, and the results were consistent with other signal analyzing methods and literature.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Guangqian Ding, Tingting Sun, Gokhan Surucu, Ozge Surucu, Aysenur Gencer, Xiaotian Wang
Summary: This study reports the coexistence of open and closed nodal line phonons in two realistic solids and demonstrates the formation of a complex nodal structure in momentum space. Phononic surface states occur in the projected surfaces, benefiting experimental detection. The results are considered a breakthrough in demonstrating the coexistence of different nodal line states in phonons.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
