Article
Electrochemistry
Bo Zhang, Hui Wang, Yuanshun Xiang, Hongyi Jiang, Lu Tang, Jie Luo, Yuanyuan Tian
Summary: The influence of CdS quantum dots on the electrochromic performance of WO3 film in Li+-based electrolyte was studied. The WO3/CdS film exhibited reversible multi-color conversion performance and showed higher transmittance modulation, coloration efficiency, and faster coloring and bleaching times compared to pure WO3 film. The porous WO3 substrate also facilitated rapid insertion/extraction of Li+ into the CdS lattices. This study provides a new electrochromic material for improving electrochromic performance and explores the electrochromic function of metal chalcogenides.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Ravish K. Jain, Atul Khanna, Yogendra K. Gautam, Beer Pal Singh
Summary: The study involved deposition and analysis of V2O5, WO3, WO3/V2O5 (bi-layer), and WO3/V2O5/WO3/V2O5 (multi-layer) thin film samples. The multi-layer sample exhibited significantly enhanced electrochemical properties compared to single layer V2O5 and WO3 films.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Leandro L. Peres, Camila M. Cholant, Rafaela M. J. Lemos, Marco P. Rodrigues, Luana U. Kruger, Richard Pereira, Wladimir H. Flores, Andre Gundel, Douglas L. da Silva, Agnieszka Pawlicka, Cesar O. Avellaneda
Summary: The study used the peroxovanadate sol-gel method to produce ZnO-doped V2O5 thin films, demonstrating that ZnO doping improved the cyclic stability and reversibility of the films and resulted in a mixture of crystalline phases.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Leandro L. Peres, Camila M. Cholant, Rafaela M. J. Lemos, Marco P. Rodrigues, Luana U. Krueger, Richard Pereira, Wladimir H. Flores, Andre Guendel, Douglas L. da Silva, Agnieszka Pawlicka, Cesar O. Avellaneda
Summary: This study used the peroxovanadate sol-gel method to produce ZnO-doped V2O5 thin films and investigated the effect of doping on the electrochromic and structural characteristics of the films. The results showed that ZnO doping improved the cyclic stability and reversibility of the films, making them promising candidates for electrochromic device applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Energy & Fuels
Hongying Liu, Xiaoping Liang, Tao Jiang, Yuanyang Zhang, Shiwei Liu, Xuezhuang Wang, Xiaowei Fan, Xuguo Huai, Yadong Fu, Zhenbo Geng, Dequan Zhang
Summary: This study reports a novel strategy for transforming three-dimensionally ordered macroporous V2O5 films into V2O5 nanorods films using a simple low-temperature annealing treatment. Controlling the concentration of oxygen vacancies through annealing improves the ion storage capacity and cycling stability of the films.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Yangyang Guo, Xiaofei Xu, Hong Gao, Yang Zheng, Lei Luo, Tingyu Zhu
Summary: The study compares the performance of V2O5-WO3/TiO2 and V2O5-WO3-CeO2/TiO2 catalysts with different calcium content in treating high-calcium content flue gas. The results show that Ce addition can promote NO conversion and enhance the alkali resistance of the catalyst, while lower calcium content is beneficial for improving the catalyst's oxidability. Calcium doping reduces the total acidity and reducibility of the catalyst, while Ce addition strengthens the reducibility of active species.
Article
Chemistry, Physical
Ilknur Bayrak Pehlivan, Gamze Atak, Gunnar A. Niklasson, Lars Stolt, Marika Edoff, Tomas Edvinsson
Summary: Solar-driven water splitting using WO3 as a cathodic electrocatalyst in combination with (Ag,Cu)InGaSe2 solar cell modules can produce hydrogen efficiently. The electrochromic effect of WO3 can be utilized for monitoring catalyst performance and controlling temperature. The solar-to-hydrogen efficiency can reach up to 13% using WO3 coated Ni foam electrolyzers.
Article
Chemistry, Applied
Teng-ge Mi, Yang-wen Wu, Xin-yue Zhou, Wen-tao Li, Li Zhao, Ji Liu, Qiang Lu
Summary: The study investigates the mechanisms of carbon monoxide (CO) oxidation on two SCR catalyst models and finds that the CO oxidation cycle consists of two key stages. The activation energy for CO oxidation on V2O5/TiO2 surface is lower than that on V2O5-WO3/TiO2, indicating that WO3 doping inhibits the CO oxidation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Environmental
Junjie Huang, Siyu Zhang, Qi Qin, Zhuanpei Wang, Guofa Cai
Summary: In this study, a multicolor complementary electrochromic dual-ion capacitor (EDIC) is designed for fast faradic reactions and rich color variations. The EDIC exhibits superior coloration efficiency and switching speed compared to traditional electrochromic devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Coatings & Films
L. Marot, J. Fleury, D. Haas, S. Iyyakkunnel, F. Sanchez, R. Steiner, D. Mathys, R. Antunes, E. Meyer
Summary: Surface nanostructuring allows the fabrication of materials with desirable properties, and nanostructured tungsten surfaces have potential applications in solar water splitting. This study used X-ray and ultraviolet photoelectron spectroscopy to examine the chemical state of nanostructured tungsten foam-like surfaces and found that helium ions can effectively increase the work function.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shih-Chieh Hsu, Szu-Han Chao, Nian-Jheng Wu, Jen-Hsien Huang, Jia-Lin Kang, Huei Chu Weng, Ting-Yu Liu
Summary: WO3 nanoparticles and MoO3 nanoribbons were prepared using a microwave-assisted hydrothermal method. A stable WO3/MoO3 suspension with a nanoheterojunction structure was obtained after grinding treatment. The ground WO3/MoOx composite film exhibited enhanced electrochromic performance due to its morphology and enhanced electron transfer. A complementary electrochromic device (ECD) using ground WO3/MoOx showed high transmittance modulation, fast switching times, high coloration efficiency, and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yu-Sheng Hsiao, Cai-Wan Chang-Jian, Wei-Lin Syu, Shih-Chieh Yen, Jen-Hsien Huang, Huei-Chu Weng, Cheng-Zhang Lu, Shih-Chieh Hsu
Summary: In this study, a vanadium-containing metal-organic framework was synthesized and used as a template to prepare V2O5 nanoparticles. The carbon-coated V2O5 exhibited enhanced electronic conductivity, electrochemical properties, excellent electrochromic performance, and higher cycling stability compared to bare V2O5. The carbon coating acted as a buffer layer to improve dimensional and electrochemical stability while allowing Li+ ion transport and blocking solvent migration into the V2O5 electrode.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Mingqing Yang, Ruirui Zhao, Shiyu Zhang, Lei Wang, Zihao Zhang, Chunhui Niu, Yong Lv
Summary: V2O5 films were fabricated on indium tin oxide glasses by spin coating vanadyl oxalate precursor sols and subsequent calcination. The films exhibited multicolor electrochromic performances and their properties were largely affected by calcination temperature, precursor concentration, and applied power. The study provided a low-cost and simple method for fabricating V2O5 films and their devices.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Energy & Fuels
Lei Deng, Zhengrong Zhu, Yikun Wang, Shihao Ma, Yan Zhang, Tao Zhang, Zhun Hu, Defu Che
Summary: This study investigates the impact of fluorides on the SCR catalyst activity and deactivation mechanism when electrolytic aluminum waste is co-fired with coal in boilers. The results show that the SCR catalytic activity drops significantly for deactivated catalyst samples by HF.
Article
Chemistry, Physical
Ismail Karakurt, Gunay Basar, Paul Leiderer, Seyma Parlatan, Nihan Arapoglu
Summary: We studied the anomalous lateral diffusion process in thin tungsten trioxide films using optical methods. The diffusion starts at imperfections within the film shortly after H+ ion intercalation begins and progresses parallel to the film surface. We measured the mean square displacement of the diffusion front and calculated the instantaneous diffusion coefficient using its time-dependence. The observed large diffusion coefficients and depth dependence of film expansion can be explained by interfacial jobsharing diffusion of electrons and protons. Raman measurements revealed an additional strong band at 855 cm-1 after the lateral diffusion, indicating the irreversible nature of this process.
SURFACES AND INTERFACES
(2023)
Article
Energy & Fuels
Shahriyar Safat Dipta, Md Habibur Rahaman, Walia Binte Tarique, Ashraful Hossain Howlader, Ayush Pratik, John A. Stride, Ashraf Uddin
Summary: Implementing a double-sided passivation approach can enhance the performance of n-i-p structured PSCs and improve the stability and photovoltaic properties of the cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Daniel Ourinson, Andreas Brand, Andreas Lorenz, Marwan Dhamrin, Sebastian Tepner, Michael Linse, Nathalie Goettlicher, Kosuke Tsuji, Jonas D. Huyeng, Florian Clement
Summary: This work presents two approaches to reduce the amount of silver on the rear side of M2-sized industrial iTOPCon solar cells. The Cu-based approach shows promise with similar power conversion efficiency compared to the conventional approach, while the Al-based approach exhibits some limitations but demonstrates the potential of such type of contact for iTOPCon solar cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Abasifreke Ebong, Donald Intal, Sandra Huneycutt, Thad Druffel, Ruvini Dharmadasa, Kevin Elmer, Apolo Nambo
Summary: This study demonstrates the successful metallization of a PERC silicon solar cell using screen-printable copper (Cu) paste. The Cu paste contains antioxidant additives and diffusion inhibitors to prevent oxidation and diffusion of Cu. The Cu-printed cells achieved an efficiency of 19% and showed no Cu diffusion after characterization tests. The long-term stability and effectiveness of the Cu diffusion barrier were also confirmed.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Senami Zogbo, Wilfried Favre, Olivier Bonino, Marie-Estelle Gueunier-Farret
Summary: Measuring specific contact resistivity (pc) is crucial for interface engineering in high efficiency solar cells. The Transfer Length Method (TLM) is commonly used for evaluating layer sheet resistance (Rsheet) and pc, but it is not suitable for metal/Transparent Conductive Oxide (TCO) interface evaluation in silicon heterojunction (SHJ) cells. This study investigates the parameters that restrict current confinement within the TCO, including mid-gap trap density (Dit) at the a-Si:H/c-Si interface and the activation energy (Ea = Ec - EF) variation of a-Si:H contact layers.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: The phenomenon of ribbon lengthening in PV modules exposed to thermal cycling is not well explained in the literature. In this study, a three layers model is proposed to explain this effect, and the predictions of the model are validated through finite element method simulations and experiments. The results show that the model predictions are consistent with the indirect measurements, but not with the direct measurements. Additionally, it is inferred that the encapsulant plays a role after the solder failure.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Jean-Baptiste Charpentier, Philippe Voarino, Julien Gaume
Summary: This study investigates the problematic ribbon lengthening observed in PV modules exposed to high amplitude thermal cycling. A simplified system model is proposed and accurate predictions are obtained using the Finite Element Method. The results show that the thickness of the encapsulant has a substantial impact on the lengthening of the ribbons.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Catalan-Gomez, E. Martinez Castellano, M. Schwarz, M. Montes Bajo, L. Dorado Vargas, A. Gonzalo, A. Redondo-Cubero, A. Gallego Carro, A. Hierro, J. M. Ulloa
Summary: This study investigates the use of core-shell gallium nanoparticles as functional light scatterers on solar cells. By optimizing the nanoparticle size, the short-circuit current of the solar cells is significantly improved. The underlying physical mechanism is studied through optical measurements and simulations, and a method to reduce the plasmonic effect of the nanoparticles is demonstrated.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
M. Gamel, G. Lopez, A. M. Medrano, A. Jimenez, A. Datas, M. Garin, I. Martin
Summary: In this study, a highly reflective ohmic contact to p-type c-Ge material is demonstrated, which can improve the efficiency of thermophotovoltaic devices. The experimental results show that this contact can simultaneously meet the requirements of good back surface passivation, low electrical resistivity, and high reflectivity. Moreover, simulations suggest that implementing these back contacts has the potential to achieve conversion efficiencies comparable to high-efficiency c-Ge TPV cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hongyang Wei, Qing Xu, Dongchu Chen, Min Chen, Menglei Chang, Xiufang Ye
Summary: This study prepared solar selective absorption films based on anodic aluminum oxide (AAO) photonic crystals using a unique electrodeposition method. The Co-Ag electrodeposited film exhibited superior solar selective absorption properties and thermal stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Ankit Kumar, Ankit Chauhan, Jordi Llobet, Helder Fonseca, Patricia C. Sousa, Carlos Calaza, Gil Shalev
Summary: This study found that decorating subwavelength arrays with SiO2 quasi-nanolenses (qNL arrays) can enhance the absorption of the solar spectrum. Optical absorption mechanisms in qNL arrays were investigated using near-field scanning optical microscopy (NSOM), revealing that the enhancement is a result of the combination of effective antireflection coating, increased optical interactions between adjacent dielectrics for elevated light trapping, and strong light concentration due to the presence of qNLs.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
S. Pingel, T. Wenzel, N. Goettlicher, M. Linse, L. Folcarelli, J. Schube, S. Hoffmann, S. Tepner, Y. C. Lau, J. Huyeng, A. Lorenz, F. Clement
Summary: This study demonstrates the potential to reduce silver consumption in highly efficient SHJ cells through fine-line screen printing using low temperature paste with various screens. The results show that using finer mesh allows for narrower grid fingers and lower resistance, leading to improved cell efficiency. Simulation results indicate that module wire configuration is crucial for reducing silver consumption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Xibo He, Jun Qiu, Wei Wang, Yicheng Hou, Yong Shuai
Summary: This paper proposes a novel phase change material with high thermal conductivity and stability for fast photo-thermal conversion and storage. The experimental results demonstrate excellent durability and stability of the phase change material, with good performance in thermal conductivity and thermal storage efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Qingyuan Liu, Lin Wang, Zheng Liu, Guohua Liu
Summary: A new evaporating structure consisting of liquid marble with tunable nanowire array is proposed to enhance solar evaporation. The experiments show that the liquid marble with nanowire array exhibits outstanding evaporation performance, which has significant implications for seawater desalination or wastewater treatment.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
Hao Liu, Qiming Liu, Jinpei Liu, Yonggang Zhao, Yingjie Yu, Yue An, Ganghui Wei, Yanzheng Li, Yujun Fu, Junshuai Li, Deyan He
Summary: Moisture in the air is identified as the main cause of performance degradation in organic-inorganic hybrid solar cells. Exposure to air leads to the growth of thin oxide layer on the interface and the formation of silver sulfide, increasing the series resistance and decreasing the fill factor, thus degrading the cell performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)
Article
Energy & Fuels
E. Blanco, P. Martin, M. Dominguez, P. Fernandez-Palacios, I. Lombardero, C. Sanchez-Perez, I. Garcia, C. Algora, M. Gabas
Summary: This study addresses the lack of optical parameters for p-type Ge wafers by determining the complex refractive indices of commercial Ge wafers with varying doping levels. The obtained data successfully reproduces the critical points associated with interband transitions and absorption features below the bandgap. The refractive indices were validated through experimental measurements and solar cell simulations.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2024)