Article
Chemistry, Physical
Fatma Zakaria Salem, M. A. Ahmed, M. A. Sadek, Maryam G. Elmahgary
Summary: This study investigates the controllable properties of SrSnO3 perovskite as a catalyst for photocatalytic water splitting using computational analysis. The synergistic effect of hydrogen doping and oxygen vacancies on the optoelectronic properties is discussed. The results show that interstitial hydrogen defects introduce shallow defect states and increase the dielectric constant, while the HOV-OV structural configuration significantly enhances optical absorption and permittivity at high concentrations of oxygen vacancies, making it an ideal catalyst for photocatalytic water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Rongjian Sa, Qiqi Zhang, Benlong Luo, Diwen Liu
Summary: This study investigated the structural stability, mechanical, electronic and optical properties of vacancy-ordered double perovskites Cs2PtX6 (X = Cl, Br, I) through first-principles calculations. The results show that these compounds are suitable for single-junction solar cells.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Physics, Condensed Matter
Meng Liu, Mengli Qin, Rongjian Sa, Diwen Liu
Summary: In this study, the structural, elastic, electronic, and optical properties of BaGe2P2 and BaGe2As2 have been extensively investigated. The simulated structural parameters are consistent with experimental data. Both compounds are mechanically stable and brittle materials. They are found to be indirect band gap semiconductors, with the band gap reduction attributed to the substitution of P by As. The calculated band gap of BaGe2P2 is suitable for optoelectronic applications. The analysis of optical properties reveals that BaGe2P2 exhibits strong optical absorption in the visible region. This work provides valuable information for further experimental exploration of BaGe2P2's potential in solar cells.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
H. Joshi, R. K. Thapa, Amel Laref, Worasak Sukkabot, Lalrinthara Pachuau, Lalmuanpuia Vanchhawng, P. Grima-Gallardo, M. Musa H-E Saad, D. P. Rai
Summary: First Principles calculations were performed on CsPbBr3 to investigate its elastic, electronic and optoelectronic properties. The results show that the calculated energy bandgap is similar to experimentally measured values and the optical spectra exhibit high absorption coefficients in the range of 3-6 eV.
SURFACES AND INTERFACES
(2022)
Article
Physics, Applied
M. V. Vaghela, Dhara Raval, Bindiya Babariya, P. N. Gajjar
Summary: In this paper, the Fm-3m structure of HgF2 was studied using the density functional theory (DFT). The stability of the structure was confirmed by positive phonon frequencies and satisfying Born Huang criteria. The elastic constants of the structure were explored for the first time. HgF2 exhibited ductile behavior with a B/GH ratio of 2.56.
MODERN PHYSICS LETTERS B
(2023)
Article
Engineering, Electrical & Electronic
Muhammad Sheraz Khan, Bingsuo Zou, Shangfei Yao, A. S. Abdalla, WeiGuo Huang, Zhijie Zhou, Biling Zheng
Summary: Using first-principles calculations, the impact of Ni(II) ion substitution on the electronic, optical, and magnetic properties of CdS nanowires was studied for the first time. It was found that the bandgap and binding energy decrease as the nanowire size increases. Ni doping was most favorable at the surface of the nanowire. The addition of extra electrons through iodine (I) co-doping shifts the ground state configuration from AFM to FM and increases the estimated Curie temperature.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Physical
K. Idczak, E. Wachowicz
Summary: This study demonstrates that intercalated gadolinium atoms can significantly affect the electronic properties of graphene and the buffer layer, and temperature-induced intercalation can cause the buffer layer to decouple and transform into a new graphene layer.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
L. L. Alves, J. S. Souza, A. F. Lima, M. Lalic
Summary: This study investigates the electronic, optical, and photocatalytic properties of the compounds InNbO4 and InTaO4 using density functional theory calculations. The results show that the Becke-Johnson potential provides the most accurate bandgap values for both compounds, in agreement with experimental studies. The photocatalytic efficiency of the compounds is analyzed, and it is found that they have suitable band alignments for efficient water splitting. However, their large bandgaps require the presence of defects to absorb visible light.
Article
Chemistry, Multidisciplinary
H. Maleki-Ghaleh, M. S. Shakeri, Z. Dargahi, M. Kavanlouei, H. Kaveh Garabagh, E. Moradpur-Tari, A. Yourdkhani, A. Fallah, A. Zarrabi, B. Koc, M. H. Siadati
Summary: The optical and electronic properties of molybdenum-doped rutile TiO2 prepared by the mechanochemical method were studied experimentally and using density functional theory (DFT). The results showed the successful incorporation of molybdenum in the crystal lattice and a reduction in the bandgap energy of rutile.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Souraya Goumri-Said, Mazhar Ali Shah, Sikander Azam, Muhammad Irfan, Mohammed Benali Kanoun
Summary: The Tl3AsSe3 compound is identified as a promising novel material for multifunctional applications. It exhibits indirect bandgap semiconducting properties with bandgaps of 1.5 eV and 1.9 eV. The compound also shows positive refractive index, making it a good candidate for optoelectronic applications.
CURRENT APPLIED PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Muhammad Salman Khan, Thamraa Alshahrani, Bakhtiar Ul Haq, Sikander Azam, Gulzar Khan, Hussein Alrobei, Zeesham Abbas, Milan Predota, Muhammad Adil Khan, Merieme Benaadad
Summary: In this study, first principle-based calculations were performed on the structural and optoelectronic properties of AInSe(2) (A = K and Li) chalcopyrite type single crystals using density functional theory (DFT). The calculated results show that both materials are direct bandgap semiconductor types, with significant differences in their optical characteristics. The calculated optical properties are in good agreement with existing literature, providing valuable insights for further experimental and theoretical research on these materials.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Multidisciplinary
A. A. Slobodchikov, I. A. Nekrasov, N. S. Pavlov, M. M. Korshunov
Summary: The band structure, density of states, and Fermi surface of the oxygen-deficient tungsten oxide WO2.9 (equivalent to W20O58) were studied using density functional theory. Despite the complexity of the structure, the low-energy band structure is feasible, mainly influenced by specific distortions in the structure.
Article
Materials Science, Multidisciplinary
E. T. Kulatov, Yu. A. Uspenskii, L. N. Oveshnikov, A. B. Mekhiya, A. B. Davydov, A. I. Ril, S. F. Marenkin, B. A. Aronzon
Summary: Doping of Mn disrupts the crystal symmetry of Cd3As2 and transitions it into a trivial topological state with a gap of around 40 meV. Experimental studies show that the change in magneto-conductivity is closely related to the opening of the gap under different doping ratios.
Article
Chemistry, Inorganic & Nuclear
A. Sari, I Abdellaoui, A. Larabi, M. Benaissa, M. Dergal
Summary: This study used first-principles calculations to investigate the effect of doping rare earth elements on perovskite systems. It found that doping rare earth elements can modify the magnetic order and electronic structure, and improve the absorbance and reflectivity.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Environmental Sciences
M. Irfan, M. Zahid, N. Tahir, M. Yaseen, U. Y. Qazi, R. Javaid, I. Shahid
Summary: In this study, iodine-doped iron tungstate was reported as an active photo-Fenton heterogeneous catalyst for wastewater treatment. The introduction of reductive non-metal species greatly enhanced the catalytic efficiency of FeWO4. The synthesized iodine-doped FeWO4 exhibited a 93.8% degradation rate of RhB under sunlight.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
F. Khan, M. Zahid, H. N. Bhatti, Y. Jamil
Summary: Textile industries release dye-laden polluted wastewater into the environment. Advanced oxidation processes like photocatalysis, including the Ag-doped ZnO-ZnS/polyaniline photocatalyst, have gained popularity for the treatment of this type of wastewater. In this study, the synthesis and characterization of the Ag-doped ZnO-ZnS/PANI photocatalyst were conducted, and its photocatalytic activity for dye degradation was tested under UV light. The results showed that the Ag-doped ZnO-ZnS/PANI composite had better activity compared to undoped composites.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Noor Tahir, Muhammad Zahid, Asim Jillani, Muhammad Yaseen, Qamar Abbas, Rana Abdul Shakoor, Imran Shahid
Summary: Wastewater from industrial units containing hazardous organic dyes and harmful bacteria poses a threat to the aquatic ecosystem and human health. Narrow bandgap visible light active photocatalysts, such as silver tungstate-MoS2 supported on graphene oxide, show improved photoefficiency and antimicrobial activities.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Sobia Aslam, Fazle Subhan, Zhen Liu, Zifeng Yan, Abrar Ahmad, Afaq Nazir, Ayesha Siddiqa, Muhammad Yaseen
Summary: The metal-organic framework Fe3O4@MIL-100(Fe) was successfully synthesized via a single-step hydrothermal route. Fe3O4 acted as a core and provided Fe(III) for the growth of the MIL-100(Fe) shell. The synthesized material showed enhanced surface area and pore volume compared to Fe3O4, with only slight effect on magnetism. Gold nanoparticles (Au NPs) were decorated on the MIL-100(Fe) structure and used for fast detection and reduction of 4-Nitrophenol (4-NP) and azo dye. The Au/ Fe3O4@MIL-100(Fe) exhibited superior catalytic performance, attributed to the well-dispersed Au NPs and core-shell structure. The material also showed excellent reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Physics, Condensed Matter
Mubashir Nazar, Nasarullah, Shatha Aldaghfag, Muhammad Yaseen, Muhammad Waqas, Mehwish Khalid Butt, Imed Boukhris
Summary: Density functional theory simulations were conducted to investigate the physical properties of Dy2MgS4 and Er2MgS4. The results confirmed the half metallic ferromagnetic behavior of these compounds through the analysis of spin-resolved density of states and band structure. The compounds exhibited metallic properties for spin-down and semiconductor properties for spin-up, with bandgaps of 1.731 eV and 3.081 eV for Dy2MgS4 and Er2MgS4, respectively. The magnetic characteristics of exchange energies and crystal field splitting were also observed, and the estimated magnetic moments were found to be 20 mu(B) and 12 mu(B) for Dy2MgS4 and Er2MgS4, respectively. Furthermore, the optical properties such as refractive index, absorption coefficient, dielectric constant, reflectivity, extinction coefficient, and optical conductivity were explored, indicating that both materials could be suitable for spintronic and solar-cell applications.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
M. Fida, S. A. Aldaghfag, M. Yaseen, M. Ishfaq
Summary: The structural, magnetic, optoelectronic, and thermoelectric properties of Nd2MgX4 (X = S, Se) were investigated using density functional theory (DFT) calculations. The stability of both spinels was confirmed by analyzing the tolerance factor and formation enthalpy. Metallic behavior was observed for Nd2MgX4 (X = S, Se) in the spin up case, while significant bandgaps were found in the spin down case. Optical properties, such as refractive index, dielectric constant, reflectivity, optical conductivity, absorption coefficient, and extinction coefficient, were computed. The temperature dependent thermoelectric parameters and figure of merit were determined, showing the potential of these spinels in spintronics and cooling industries.
CHALCOGENIDE LETTERS
(2023)
Article
Chemistry, Physical
Zubera Naseem, Rao Aqil Shehzad, Sobia Jabeen, Suman Tahir, Farwa Mushtaq, Muhammad Zahid, Javed Iqbal
Summary: The current research focuses on eutectic mixtures formulated by combining hydrogen bond donors and acceptor molecules. Density functional theory is used to examine the molecular dynamics and validate the method. Among the five solvents studied, DES1 (ChCl: EG) is found to be the best solvent with various favorable properties. The density of states is utilized to evaluate the electronic structure of the experimentally prepared DESs.
Article
Chemistry, Physical
Muhammad Zafarullah Kazim, Mudassir Ishfaq, Shatha A. Aldaghfag, Muhammad Zahid, Muhammad Yaseen
Summary: This study reports the physical characteristics of halide double perovskites, revealing their geometrical and thermodynamical stability as well as low bandgap behavior. The materials exhibit excellent optical conductivity in the infrared and visible range and have a high figure of merit at room temperature.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Environmental Sciences
Noor Tahir, Muhammad Zahid, Asim Jillani, Suman Tahir, Muhammad Yaseen, Qamar Abbas, Rana Abdul Shakoor, Syed Zajif Hussain, Imran Shahid
Summary: The present study investigates and compares the photocatalytic and antibacterial activity of in situ Manganese doped ternary nanocomposites. The Mn-doped Ag2WO4 coupled with MoS2-GO and Mn-doped MoS2 coupled with Ag2WO4-GO both show efficient plasmonic catalysts for wastewater treatment. The nanocomposites exhibit excellent sunlight harvesting ability for dye degradation and show good photocatalytic stability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Physics, Condensed Matter
Sanam Saleem, Mudassir Ishfaq, Shatha A. Aldaghfag, Misbah, Muhammad Sajid, Muhammad Yaseen
Summary: The magnetoelectronic and optical characteristics of Ba1-xMoxTiO3 (x = 25%, 50%, and 75%) compound were computed using density functional theory (DFT). It was found that Mo-incorporated BaTiO3 exhibited robust half metallic ferromagnetic properties and showed asymmetric behavior in different spin channels.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Condensed Matter
Mudassir Ishfaq, Muhammad Yaseen, F. F. Al-Harbi, Mehwish Khalid Butt
Summary: In this study, the magneto-optical properties of cobalt-doped strontium titanate (STO) were analyzed using density functional theory. The results showed that different concentrations of cobalt doping in STO can lead to various transport and magnetic properties, potentially achieving a transition from magnetic semiconductor to half metallic ferromagnet.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Condensed Matter
Hina Ambreen, Sanam Saleem, Shatha A. Aldaghfag, Saima Noreen, Muhammad Zahid, Mudassir Ishfaq, Muhammad Yaseen
Summary: The magnetic and optoelectronic properties of Be1-xVxSe (x = 6.25%, 12.5%, 18.75%, 25%) alloys were investigated using the FP-LAPW method based on spin-dependent density functional theory. The study confirmed the presence of half-metallic ferromagnetism in V-doped BeSe at all V concentrations, with the spin-up state displaying metallic behavior and the spin-down state exhibiting semiconductor character. The computed total magnetic moments at 6.25%, 12.5%, 18.75%, and 25% doping concentrations were found to be 3.00575, 3.00386, 3.00099, and 3.00023 μB, respectively. Moreover, the dielectric function-dependent optical properties of the system were also investigated, revealing high absorption and low reflectance in the UV region. Overall, the studied material shows potential for applications in spintronics and optoelectronics.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Multidisciplinary
Muhammad Zafarullah Kazim, Mudassir Ishfaq, Shatha A. Aldaghfag, Umer Younis, Muhammad Yaseen
Summary: Barium based double perovskite rhenates exhibit diverse magnetic behaviors, from ferromagnetism to (anti)ferromagnetism, which are influenced by the theoretical Hubbard interaction parameter (U) and can be explained by density functional theory (DFT). Ba2CdReO6 shows ferromagnetic ordering, while Ba2ErReO6 exhibits ferrimagnetism. The 100% spin polarization at the Fermi level is mainly attributed to Re-d orbitals and has minor contributions from the valence orbitals of Cd/Er ions. The thermo-structural stability, 100% spin polarization, and excellent optical properties make these double perovskites potential candidates for spin-optoelectronic devices.
Article
Engineering, Electrical & Electronic
Nishi Mehak, Bindu Rani, Aadil Fayaz Wani, Shakeel Ahmad Khandy, Ajay Singh Verma, Atif Mossad Ali, M. A. Sayed, Shobhna Dhiman, Kulwinder Kaur
Summary: In this study, the electronic, structural, and thermoelectric properties of newly designed layered rare-earth metal germanide halides were investigated. The materials showed promising thermoelectric performance, making them suitable candidates for energy harvesting in thermoelectric applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Devidas I. Halge, Vijaykiran N. Narwade, Nabeel M. S. Kaawash, Pooja M. Khanzode, Sohel J. Shaikh, Jagdish W. Dadge, Prashant S. Alegaonkar, Rajeshkumar S. Hyam, Kashinath A. Bogle
Summary: This study presents the design and fabrication of a high-performance blue light photodetector using an n-type cadmium sulfide (CdS) thin film and a p-type polyaniline (PANI). The photodetector demonstrates exceptional performance characteristics, including high responsivity, detectivity, and sensitivity, along with rapid response time and rectification behavior. The research represents a significant advancement in the field of high-performance photodetectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Da Hu, Jiabin Lu, Qiusheng Yan, Yingrong Luo, Ziyuan Luo
Summary: This study introduces a chemical mechanical polishing technique based on metal electrochemical corrosion for single-crystal SiC to address the environmental pollution caused by the polishing solution in chemical mechanical polishing. Wear experiments were conducted to investigate the wear properties of SiC C-surface under different grinding ball materials and solutions. The proposed mechanism of material removal in single-crystal SiC via metal electrochemical corrosion was discussed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Lifang Mei, Long Lin, Dongbing Yan, Yu Liang, Yu Wu, Shuixuan Chen
Summary: This paper investigates the removal of CuO particles from silicon wafer surfaces using a picosecond laser. Numerical calculations and experimental research were conducted, and a thermal-stress coupled finite element model was established. The results show that as the laser energy density increases, the removal rate of CuO particles initially increases and then decreases, while the roughness of the silicon substrate decreases and then increases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Michihiro Yamada, Shuhei Kusumoto, Atsuya Yamada, Kentarou Sawano, Kohei Hamaya
Summary: In this study, we demonstrated the low-temperature growth of a Ge layer on a Co-based Heusler alloy via Sn doping, which improved the magnetic properties and spin signal.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Xiang-Long Wei, Bao-Feng Shan, Zong-Yan Zhao
Summary: This study synthesized and characterized a CuAlO2/CuGaO2 heterostructure and evaluated its photocatalytic performance. The heterostructure exhibited superior performance compared to individual CuAlO2 and CuGaO2 photocatalysts, with increased carrier concentration, enhanced redox capabilities, superior electrochemical stability, and reduced interfacial resistance. Photocatalytic experiments demonstrated the remarkable oxidation potential and notable reduction activity of the heterostructure, outperforming CuAlO2 and CuGaO2 in degradation rates and hydrogen production rates, respectively. These findings highlight the superior performance and broad applicability of the CuAlO2/CuGaO2 heterostructure in various photocatalytic reactions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Micka Bah, Daniel Alquier, Marie Lesecq, Nicolas Defrance, Damien Valente, Thi Huong Ngo, Eric Frayssinet, Marc Portail, Jean-Claude De Jaeger, Yvon Cordier
Summary: This study investigates the AlN nucleation layer issue in GaN high frequency telecommunication and power switching systems fabricated after heteroepitaxy on Silicon or Silicon Carbide. It is shown that using 3C-SiC as an intermediate layer can significantly decrease RF propagation losses. Measurements and analyses demonstrate that dopant diffusion into the 3C-SiC pseudo-substrate is confined beneath the interface, and a slightly conductive zone is present beneath the AlN/3C-SiC interface, explaining the low propagation losses obtained for the devices. This work highlights the importance and efficiency of the 3C-SiC intermediate layer as a pseudo-substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuang Wang, Lijun Wu, Zhiqing Wang, Ziyue Qian
Summary: The geometric structure and electrical properties of zigzag and armchair DWSiNT perfect tubes with different Stone-Wales defects were simulated using the SCC-DFTB method. It was found that the atomic arrangement, stability, energy gap, and charge distribution strongly depend on the type of tube. The effects of strong and weak electric fields on the tubes were also investigated, showing different impact on stability and energy gap. These findings have implications for future experimental studies.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, Sunil Singh Kushvaha, Sambasivam Sangaraju, Venkata Krishnaiah Kummara
Summary: This study focuses on the preparation and performance of MIS-type high-k dielectric oxide-based UV photodetectors. The researchers found that the Au/Ta2O5/GaN devices prepared on Ta2O5/GaN heterojunction with post-annealing exhibited improved photoresponsivity, EQE, and rise/fall times. This improvement is attributed to the optimized band configuration of the Ta2O5/GaN heterostructure and the effect of post-annealing on photogenerated charge carriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Jean-Francois Michaud, Marc Portail, Daniel Alquier, Dominique Certon, Isabelle Dufour
Summary: This paper reviews the use of MEMS devices without sensitive layers in gas detection applications. These devices can measure a physical property of the gas to determine its concentration, and have the advantages of generality and high detection limits.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Kanyu Yang, Chaojie Shi, Ruizhao Tian, Haoyue Deng, Jie He, Yangyang Qi, Zhengchun Yang, Jinshi Zhao, Zhen Fan, Jun Liu
Summary: This study investigates the electrical and synaptic properties of Ag/TiO2 nanorod/FTO-based RRAM devices, focusing on the impact of different seed layer thicknesses on nanorod thickness and RRAM performance. The devices show remarkable achievements in terms of endurance, self-compliance, and resistance switching ratio. The switching mechanism is attributed to space-charge-limited conduction resulting from electron trapping in oxygen vacancy traps. The devices also maintain stable synaptic properties even after undergoing multiple cycles of long-term potentiation and depression.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Karthickraj Muthuramalingam, Wei-Chih Wang
Summary: This study presents a non-destructive approach using terahertz time-domain spectroscopy (THz-TDS) to estimate the electrical properties of semi-insulating compound semiconductors. The study successfully measures the resistivity and carrier concentration of semi-insulating Silicon Carbide (SiC) and Indium Phosphide (InP) wafers using THz-TDS in transmission mode. The simplified Drude model and the Nelder-Mead algorithm are employed to estimate the electrical properties, and the results are in accordance with the manufacturer specifications. The feasibility of non-destructive mapping of the electrical properties is demonstrated, offering a promising tomographic inspection approach for online monitoring.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Pengfei Wei, Rui Tong, Xiaofeng Liu, Yao Wei, Yongan Zhang, Xu Liu, Jian Dai, Haipeng Yin, Dongming Liu
Summary: This study investigates the influence of SiNx and SiOxNy as rear-side passivation films on the performance of PERC+ cells. SiNx film is found to have better passivation performance and resistance to aluminum paste erosion, while SiOxNy film exhibits better optical performance. By designing multi-layer SiNx/SiOxNy/SiNx stacks, the cells' efficiency and bifaciality are significantly improved.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuangting Ruan, Xiaolan Li, Wen Cui, Zhihui Zhang, Zhihui Xu, Huanqi Cao, Shougen Yin, Shishuai Sun
Summary: Integrating photosensitive electrode materials can effectively improve the low temperature tolerance and enhance energy density and power density. The surface morphology reconstruction technique can increase the active surface area and improve electrolyte contact, leading to higher specific capacity. Additionally, the electrodes demonstrate excellent photoelectric and photothermal conversion abilities, allowing the supercapacitor to maintain high energy density even at low temperatures.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Review
Engineering, Electrical & Electronic
Ashmalina Rahman, James Robert Jennings, Mohammad Mansoob Khan
Summary: This review provides a comprehensive overview of the synthesis and applications of nanostructured CuInS2 in photocatalytic applications. Various strategies, including the introduction of dopants, surface decoration, and heterojunction formation, have been summarized to improve the photocatalytic performance of CuInS2. However, scientific challenges such as the high carrier recombination rate limit the broad application of CuInS2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
