Article
Materials Science, Multidisciplinary
Pichanan Teesetsopon, Pattaraporn Treewut, Sasithorn Sripetch, Piyatida Nasomjai, Auttasit Tubtimtae
Summary: The doctor-blading technique was used to prepare pristine PEDOT:PSS and PEDOT:PSS thin films with different weight amounts of pyrazine on a borosilicate glass substrate. Scanning electron microscopy revealed granular deposits and hill shapes on the film surfaces. The addition of pyrazine led to a reduction in crystallite size and changes in the optical and electrical properties of the thin films.
Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Md Abu Sayeed, Hasan Khaled Rouf
Summary: The impacts of Al doping and annealing temperature on the structural, optical, and electrical properties of Sn1-xO2:Al-x thin films were investigated. High temperature annealing improved crystallinity and reduced defects, while Al doping decreased carrier mobility and concentration.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Aziz Nfissi, Mounir Belhajji, Abdelhak Chouiekh, Abdelilah Rjeb, Abdelfettah Barhdadi, Salaheddine Sayouri, Yahya Ababou
Summary: Cadmium oxide (CdO) thin films were successfully deposited on glass substrates by the sol-gel spin coating method. The effects of the annealing temperature and Zirconium (Zr) doping on the physical properties of the CdO thin films were investigated. It was found that 550 °C is the optimal annealing temperature with a good crystallinity for the CdO thin films. Then, by using this temperature, different Zr doping concentrations (0, 1, 3, 5 and 7%) were prepared at the same experimental conditions. The X-ray diffraction (XRD) patterns of all the as-prepared thin films showed a polycrystalline nature with a face centered cubic (FCC) structure and that Zr incorporated the sites of Cadmium (Cd) up to 3% concentration, while the excess Zr doping (x > 3%) aggregated at the grain boundaries of the CdO lattice. Scanning electron microscopy (SEM) analysis revealed homogeneous and dense grains distribution with a film thickness of 30 μm. The optical study showed an increase in optical transmittance of CdO with Zr doping up to 3% and then a decrease onwards within the same wavelength region. The optical band gap values increased from 2.41 to 2.67 eV with increasing Zr doping which was explained by the Burstein-Moss effect. The minimum electrical resistivity (5.32 x 10(-1) Ω·cm) was obtained for the film coated with 3% Zr using the four-probe method.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Seval Aksoy Pehlivanoglu, Ozgur Polat
Summary: ZnO and Ir-doped ZnO thin films were fabricated by sol-gel spin coating technique. The structures and properties of the films were investigated. The addition of Ir increased the volume of the unit cell, atomic packing fraction, and grain size of the thin films. Optical bandgap decreased with Ir substitution. The transmittance and optical dielectric properties were also affected by Ir doping.
Article
Metallurgy & Metallurgical Engineering
Emine Guneri, Johnson Henry, Fatma Gode, Nilgun Kalaycioglu Ozpozan
Summary: Pure ZnO and Mn-doped ZnO thin films were prepared by chemical bath deposition method with various Mn doping concentrations. The structural, morphological, and optical properties of the films were analyzed using different techniques. XRD analysis revealed hexagonal structured ZnO in all films, with a peak shift observed in Mn-doped films. The crystallite size increased with Mn doping. The surface morphology of Mn-doped films exhibited irregularly shaped agglomerated particles. The transmittance spectra showed higher transmittance in the visible region, which decreased with Mn doping, indicating increased optical absorption. The band gap of Mn-doped films decreased with Mn doping. Mn-doped films exhibited higher optical and electrical conductivity in the UV region.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Optics
Mohd Shkir, Aslam Khan, Mohd Imran, M. Ajmal Khan, Rayees Ahmad Zargar, Thamraa Alshahrani, K. Deva Arun Kumar, P. Mohanraj, Kamlesh Chandekar, S. AlFaify
Summary: In this study, different Neodymium contents loaded cobalt oxide nanostructured thin films were fabricated using facile spray pyrolysis method, and their structural, optical, and electrical properties were investigated.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Suman Sarkar, Ashim Chandra Bhowal, Raghuram Kandimalla, Sarathi Kundu
Summary: Negatively charged gold and silver nanoparticles were prepared using the dry leaf of Annona reticulata and utilized to fabricate thin films of PEDOT:PSS nanocomposites. The type and concentration of nanoparticles were found to result in significant changes in the structure, morphology, and electrical behaviors of the nanocomposite thin films. Increasing nanoparticle concentration moderately enhanced the in-plane DC conductivity of the composite films, while impedance spectroscopy revealed variations in impedance as a function of nanoparticles concentration and applied frequency.
Article
Materials Science, Multidisciplinary
Ahmed H. Hammad, M. Sh Abdel-wahab, Asim Jilani
Summary: In this study, zinc oxide thin films doped with various ratios of niobium were successfully synthesized using direct current/radio frequency sputtering technique. The effects of niobium on the films were examined through XPS, XRD, and atomic force microscopy. As the niobium content increased, changes in the physical structure, roughness, and optical properties of the ZnO films were observed and confirmed.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Mustafa Kavgaci, Adnan Kucukonder, Suleyman Kerli
Summary: Indium oxide and boron-doped indium oxide thin films were synthesized using the spray pyrolysis method. XRD measurements revealed a cubic structure in the films, while morphological analysis showed overall homogeneity. Experimental investigation showed that boron doping increased transmittance rates and positively contributed to radiation shielding properties in the thin films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
A. Abouelsayed, Nurhan Ghazal, Wael Eisa, Badawi Anis
Summary: An optical conductivity study was conducted on thin films of PEDOT:PSS and EG-PEDOT:PSS doped with various concentrations of SWCNTs, revealing distinct conductivity contributions in the low frequency range based on different doping levels.
Article
Engineering, Electrical & Electronic
S. Vinoth, A. M. S. Arulanantham, S. Saravanakumar, R. S. Rimal Isaac, N. Soundaram, N. Chidhambaram, Devarajan Alagarasan, S. Varadharajaperumal, Mohd. Shkir, S. AlFaify
Summary: Cobalt-doped ZnO thin films synthesized using chemical bath deposition show excellent UV photosensing properties, with nanowire morphology and hexagonal wurtzite crystal structure. Due to the replacement of Co2+ ions, an increase in crystallite size and decrease in bandgap was observed, leading to high photoabsorption capability, with the highest responsivity reaching 0.918 AW(-1).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Yangyang Wang, Zhaoyang Li, Zhibiao Ma, Lingxu Wang, Xiaodong Guo, Yan Liu, Bingdong Yao, Fengqing Zhang, Luyi Zhu
Summary: BSFMx films were prepared by the sol-gel method and their crystal structure, phase composition, oxygen vacancy content, and various properties were systematically analyzed. The study found that doping Sm at an appropriate amount can reduce the leakage property, improve the dielectric property, and delay the aging process of the films.
Article
Engineering, Electrical & Electronic
Ph Nonglen Meitei, Borish Moirangthem, Chitralekha Ngangbam, Mir Waqas Alam, Naorem Khelchand Singh
Summary: In this study, gadolinium oxide thin films were successfully deposited on a silicon substrate using electron beam evaporation technique, and the films were polycrystalline with a cubic crystal system after annealing at different temperatures. The annealed films showed improved electrical performance and fast switching response, making them suitable for photodetector applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
M-B Bouzouraa, A. En Naciri, Y. Battie, S. Dalmasso, S. Diliberto, A. Bouche, N. Chaoui
Summary: This study investigated the effects of nitrogen N+2 ion beam on TiO2 thin films using various techniques such as Raman spectroscopy, grazing incidence X-ray diffractometer (GIXRD), X-ray photoelectron spectroscopy (XPS), spectroscopic ellipsometry (SE), atomic force microscopy (AFM), and photoluminescence spectroscopy (PL). The results showed significant changes in the physical properties of TiO2 after exposure to the N+2 ion beam.
Article
Chemistry, Physical
Liang Kuai, Junnan Li, Yajuan Li, Yusheng Wang, Pandeng Li, Yuanshuai Qin, Tao Song, Yingguo Yang, Zhuoying Chen, Xingyu Gao, Baoquan Sun
ACS ENERGY LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Zhelu Hu, Jose Miguel Garcia-Martin, Yajuan Li, Laurent Billot, Baoquan Sun, Fernando Fresno, Antonio Garcia-Martin, Maria Ujue Gonzalez, Lionel Aigouy, Zhuoying Chen
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Jiaji Zhao, Qingduan Li, Shengjian Liu, Zhixiong Cao, Xuechen Jiao, Yue-Peng Cai, Fei Huang
ACS ENERGY LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Li-Ming Wang, Qingduan Li, Shengjian Liu, Zhixiong Cao, Yue-Peng Cai, Xuechen Jiao, Haojie Lai, Weiguang Xie, Xiaozhi Zhan, Tao Zhu
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Jiale Chen, Xuelong Huang, Zhixiong Cao, Shengjian Liu, Kexin Liang, Jinhai Liu, Xuechen Jiao, Jiaji Zhao, Qingduan Li, Yue-Peng Cai
Article
Polymer Science
Yue Luo, Yingtong Luo, Xuelong Huang, Shengjian Liu, Zhixiong Cao, Lingzhi Guo, Qingduan Li, Yue-Peng Cai, Yang Wang
Summary: The study designed and synthesized a novel ester-substituted Qx-based narrow bandgap polymer donor material PBDTT-EFQx, which showed the highest power conversion efficiency (PCE) in organic solar cells composed of PBDTT-EFQx and PC71BM.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Zhi Cao, Lu Zhou, Zhiyong Gao, Zhaojun Huang, Xinying Jiao, Zehan Zhang, Keke Ma, Zhenhua Di, Yu Bai
Summary: This study investigates the comprehensive superiority of using recycled concrete aggregate as the substrate in constructed wetland systems. Results show that this practice can reduce environmental burden and total costs, and has better wastewater polish performance, especially in terms of phosphorus removal capacity. The grey water footprint reduction of system 2 is on average 4.5 times as large as that of system 1.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Applied
Jiaji Zhao, Xuelong Huang, Qingduan Li, Shengjian Liu, Ziqiang Fan, Di Zhang, Shanshan Ma, Zhixiong Cao, Xuechen Jiao, Yue-Peng Cai, Fei Huang
Summary: In this study, high-performing large bandgap polymer donors were designed by tailoring the length of alkyl side chain, leading to increased crystallinity and charge mobility, and consequently improved power conversion efficiencies of BHJ solar cells. Shortening the side chain length was found to be essential for developing high-performing polymer donors and enhancing device photovoltaic performance.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Energy & Fuels
Lingzhi Guo, Xuelong Huang, Yingtong Luo, Shengjian Liu, Zhixiong Cao, Jiale Chen, Yue Luo, Qingduan Li, Jiaji Zhao, Yue-Peng Cai
Summary: Two narrow bandgap conjugated polymers, PTT-EFQX and PT-DFBT-T-EFQX, containing a novel EF-Qx unit, were designed and synthesized through palladium-catalyzed Stille coupling reaction. The structure-property relationship was systematically studied, indicating that PTT-EFQX-based polymer solar cells achieved better PCEs due to superior morphology. Effective design strategy for quinoxaline-based polymer donors is crucial for high-performance PSCs.
Article
Materials Science, Multidisciplinary
Zeling Guo, Bin Fang, Xiaowei Du, Li Zhao, Xinyu Li, Zhixiong Cao, Xuelong Huang, Yaohuan Sheng, Juan Zhong, Gaowei Zhao, Xiangfu Zeng, Weidong Zhao, Haijian Zhong
Summary: Glucose sensing based on graphene conductance was studied using the probe station and COMSOL Multiphysics. The results from the probe station showed a negative linear relationship between graphene conductance and glucose concentration. By using this relationship as a standard curve, the concentration of glucose on graphene could be obtained by measuring graphene conductance. Simulation results using COMSOL Multiphysics Toolbox indicated a scattering effect of glucose molecules on current and a more rapid linear potential drop in the glucose region as calculated from the equipotential line distribution, which aligned with the experimental results. These findings provide a new research perspective and method for detecting glucose and other biological substances.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Applied
Fan Jiang, Yintao Lan, Jinya Hu, Yanfeng Zhang, Yunnan Yan, Haijian Zhong, Jian Zhang, Zhixiong Cao, Xuelong Huang
Summary: Developing conjugated polymers with full spectral coverage of the NIR-II window is an effective strategy for achieving high signal-to-noise ratio and tissue penetration depth in photoacoustic imaging.
Article
Materials Science, Multidisciplinary
Fan Jiang, Yintao Lan, Tiantian Zhou, Jinya Hu, Yanfeng Zhang, Qian Li, Haijian Zhong, Pengfei Wei, Jian Zhang, Xuelong Huang, Zhixiong Cao
Summary: Inspired by cost-effective thiophene-based compounds, we developed a semiconducting polymer PTT-ATQ with a non-fused ether chain substituted donor unit. The polymer exhibited a strong intramolecular charge-transfer effect in the NIR-II window, resulting in high photoacoustic signals. The PTT-ATQ also demonstrated good biocompatibility and high in vivo photoacoustic imaging performance. This study demonstrates the efficient strategy of using cost-effective thiophene-based building blocks for high-performance NIR-II in vivo photoacoustic imaging contrast agents.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qingduan Li, Xiaolan Liao, Yun Sun, Yuanjie Xu, Shengjian Liu, Li-Ming Wang, Zhixiong Cao, Xiaozhi Zhan, Tao Zhu, Biao Xiao, Yue-Peng Cai, Fei Huang
Summary: This study investigates the influence of material properties on the morphology and performance of layer-by-layer (LBL) processed solar cells and demonstrates the rational design of morphology through fluorine substitution, leading to high-performance PSCs.
Article
Chemistry, Physical
Qingduan Li, Tao Jia, Li-Ming Wang, Shengjian Liu, Xiaolan Liao, Zhixiong Cao, Jiabin Zhang, Xiaozhi Zhan, Tao Zhu, Yue-Peng Cai, Fei Huang
Summary: High-performing all-polymer solar cells (all-PSCs) with enhanced efficiency and fill factor were fabricated using layer-by-layer (LBL) deposition. The addition of the solvent additive CN facilitated the diffusion of the polymer acceptor, leading to the realization of a P-i-N heterojunction. The independent coating of the donor and acceptor in the LBL photoactive layers resulted in good crystallinity and efficient charge separation and transportation.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Francois Atteia, Judikael Le Rouzo, Lou Denaix, David Duche, Gerard Berginc, Jean Jacques Simon, Ludovic Escoubas
MATERIALS RESEARCH BULLETIN
(2020)