Article
Green & Sustainable Science & Technology
Lili Zhao, Zuoming Chen, YuQin Peng, Lilin Yang, Jingting Ai, Jianhua Zhou, Lei Miao
Summary: In this work, a smart electrochromic energy storage device (EESD) was constructed by using MnO2 film as the complementing electrode to provide optical modulation and energy storage performance. The synthesized WO3 and MnO2 films exhibited desirable matched performance. The constructed EESD showed significant optical contrast, fast switching times, high coloration efficiency, satisfactory specific capacitance, and excellent cycle stability. The EESD could light up an LED bulb or an LCD screen after charging, indicating promising application prospect in energy storage.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Physics, Multidisciplinary
Hang Yun, Ren He, Zishou Hu
Summary: This paper proposes a physical model using tungsten trioxide, nickel oxide, and LiClO4-propylene carbonate solution to investigate the electrochromic process mechanism and predict the electrochromic behavior. The model considers ion diffusion, electromigration, and describes ion transport kinetics using the Nernst-Plank equation. Moreover, the model incorporates the Poisson equations, Ohm's law, and Frumkin-Butler-Volmer equation to govern the behavior at the interfaces.
Article
Chemistry, Multidisciplinary
Marika Gugole, Oliver Olsson, Stefano Rossi, Magnus P. Jonsson, Andreas Dahlin
Summary: The possibility of actively controlling structural colors has attracted a lot of attention recently, especially for new types of reflective displays. By using inorganic electrochromic nanostructures based on tungsten trioxide, gold, and platinum, a wide color range and high reflectance can be achieved, outperforming the latest commercial color e-readers.
Article
Chemistry, Analytical
Jinmei Tian, Bin Jiang, Hong Shao, Yuting Wang, Tianqi Wang, Feng Li, Dan Li, Ying Yang, Xiangting Dong
Summary: In this study, one-dimensional tandem heterojunctions of SnO2 @POMs@WO3 nanofibers were prepared using coaxial electrospinning, and the gas sensing performance was significantly improved compared to SnO2 @WO3 nanofibers. The optimized response to 100 ppm ethanol reached 8.8, providing a new strategy for developing high-performance gas sensors through synthesizing one-dimensional tandem heterojunctions and introducing POMs.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Qingyi Huang, Yi Liang, Sheng Cao, Zaishang Yang
Summary: Vertically aligned WO3 nano-architectures can be obtained by adjusting the composition of the precursor solution via a hydrothermal method. The nanostructured array films with thicknesses of about 600 nm exhibit remarkable enhancement of electrochromic properties in the infrared region. The improved performance is attributed to the vertically arranged structure, facilitating ion diffusion and providing a larger surface area for charge transfer reaction.
Article
Chemistry, Multidisciplinary
Giacometta Mineo, Mario Scuderi, Gianni Pezzotti Escobar, Salvo Mirabella, Elena Bruno
Summary: This study successfully fabricated WO3 nanostructures using hydrothermal and calcination processes, and evaluated their energy storage performances through various tests. The results show that WO3 hierarchical urchin-like nanostructures with pure hexagonal crystal phase exhibit high specific capacitance values. Additionally, an asymmetric supercapacitor using WO3 nanostructures and a graphene paper electrode demonstrates excellent energy density and power density.
Article
Energy & Fuels
Qingyi Huang, Sheng Cao, Yuwei Liu, Yi Liang, Juquan Guo, Ruosheng Zeng, Jialong Zhao, Bingsuo Zou
Summary: The study focuses on improving the performance of Zn2+-based electrochromic technology through morphology control, using WO3 as the research model. Different shapes of hexagonal WO3 films were successfully prepared, showing promising electrochromic properties.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Multidisciplinary
Yaowu Li, Peiyan Sun, Jian Chen, Xiuling Zha, Xueqing Tang, Zhiwei Chen, Yanan Zhang, Shan Cong, Fengxia Geng, Zhigang Zhao
Summary: The use of a new device design based on porous metamaterials has solved the limitations of metamaterial-based electrochromic displays. The new device achieves good color quality, non-iridescence, fast switching response, excellent cycling performance, and low power consumption.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lisa Braendler, Lukas Niklaus, Marco Schott, Peer Loebmann
Summary: UV irradiation is used to precharge sputtered tungsten trioxide (WO3) on polyethylene terephthalate, enhancing the photochromic response with organic solvents. The correlation between transmittance and charge density allows for precise control of the precharging process monitored by UV-Vis spectroscopy. A proof-of-concept flexible electrochromic device combining precharged WO3 and Prussian blue exhibits a superior change in visible light transmittance and high coloration efficiency.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Electrochemistry
Dimitrios Louloudakis, Kyriakos Mouratis, Jorge Gil-Rostra, Emmanouel Koudoumas, Rafael Alvarez, Alberto Palmero, Agustin R. Gonzalez-Elipe
Summary: In this study, the electrochromic response of porous WO3 thin films grown at different pressures was compared, revealing that higher porosity films exhibited poorer performance, which can be explained by the characteristics of the porous structure. The accessible pore volume and area play key roles in determining the efficiency and reversibility of the electrochromic response.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Pritam J. Morankar, Rutuja U. Amate, Aviraj M. Teli, Ganesh T. Chavan, Sonali A. Beknalkar, Dhanaji S. Dalavi, Namita A. Ahir, Chan-Wook Jeon
Summary: This research focuses on the electrodeposition of tungsten oxide (WO3) thin films with different surfactants on glass substrates. The results show that the W-PEG sample exhibits excellent electrochromic and supercapacitive performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Physics, Applied
Tanushree Ghosh, Chanchal Rani, Suchita Kandpal, Manushree Tanwar, Love Bansal, Rajesh Kumar
Summary: Electrochemically deposited tungsten oxide (WO3) film shows excellent reversibility, stability, and switching performance as an electrochromic auxiliary electrode. The electrode exhibits remarkable electrochemical properties and suitability for electrochromic applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Environmental
Rui Wang, Jiawen Li, Lin Gao, Junsheng Yu
Summary: This work presents bifunctional electrodes based on copolymer poly(thieno [3,2-b] thiophene-co-3,4-ethylenedioxythiophene) (P(TT-co-EDOT)), which exhibit favorable supercapacitive and electrochromic properties. The copolymer films possess good flexibility, conductivity, and mechanical stability due to the synergistic effect of PTT and PEDOT. Additionally, the morphology and electrical performance of the electrodes can be easily modulated by depositing thieno [3,2-b] thiophene (TT) and 3,4-ethylenedioxythiophene (EDOT) with different ratios.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Aryal Krishna Prasad, Jong -Young Park, Hui Yeong Jung, Je Woo Kang, Soon-Hyung Kang, Kwang-Soon Ahn
Summary: A thin film of nickel-intermixed tungsten oxide (Ni-WO3) composite was fabricated using a simple one-step electrochemical deposition method. The composite film exhibited enhanced electrochromic energy storage properties compared to the individual Ni(OH)2 and WO3 thin films. The improved performance was attributed to the crosslinked and deagglomerated surface of the composite film, which enhanced the electrochemically active surface area and charge transfer kinetics. The Ni-WO3 thin film showed high coloration efficiency, optimum optical contrast, fast coloration response, and excellent capacitance retention.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Hongzhao Wu, Honglong Ning, Muyun Li, Chenxiao Guo, Xinglin Li, Tian Qiu, Zhuohui Xu, Cheng Luo, Rihui Yao, Junbiao Peng
Summary: This study successfully fabricated nanostructured tungsten oxide with different copper doping concentrations using a solvothermal method and found that the area-specific capacitance of the films increased with increasing doping concentration. Characterization techniques including X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, cyclic voltammetry, and chronoamperometry confirmed that the films were reticular structures composed of nanowires. Copper doping improved electron conductivity and shortened ion transmission distance, leading to enhanced energy storage properties.
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)