Article
Chemistry, Analytical
Hsi-Chao Chen, Yu-Hung Yen, Yu-Xuan Zhuang, Tan-Fu Liu
Summary: Vanadium Pentoxide (V2O5) and Tungsten Trioxide (WO3) films were used to create an all-solid-state electrochromic device (ECD) with fast response time and low voltage stable startup. By adjusting the oxygen flow and annealing temperature, optimal optical contrast (AT), coloring time (tc), and bleaching time (tb) were achieved. However, in the ITO/V2O5/gel-electrolyte/WO3/ITO device, the working voltage was measured as & PLUSMN;2.5 V, and the tc and tb were slightly longer.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Yingming Zhao, Xiang Zhang, Xi Chen, Wenjie Li, Lebin Wang, Zitong Li, Jiupeng Zhao, Frank Endres, Yao Li
Summary: In this study, Sn-NiO films with superior electrochromic performance were prepared through a simple one-step magnetron sputtering process. By modifying the microstructure of the NiO film with Sn4+ ions, the grain size was refined, the electrochemically active surface was enlarged, and the diffusion of lithium ions was promoted, thus improving the electrochromic performances of the NiO film. The optimized Sn-NiO film showed outstanding electrochromic performances, including large transmittance modulation, high coloration efficiency, fast switching speed, and good cycling durability.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Chan Yang Jeong, Takashi Kubota, Chuleekorn Chotsuwan, Vasujin Wungpornpaiboon, Kazuki Tajima
Summary: Next-generation automobiles will feature smart windows that can vary their optical properties dynamically. An all-solid-state ECD using a polymer electrolyte has been developed, offering excellent color efficiency with easier assembly, although it has a longer response time compared to gel electrolyte ECDs. This design is expected to be easier to implement in practical industrial settings.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Yingming Zhao, Xiang Zhang, Xi Chen, Wenjie Li, Zitong Li, Mingjun Chen, Wenhai Sun, Jiupeng Zhao, Yao Li
Summary: By utilizing LiAlSiO4 as the electrolyte material, a solid-state electrochromic device with excellent optical performance and stability was successfully prepared. Considering its low cost and abundance of aluminum and silicon, LiAlSiO4 may be recognized as a sustainable electrolyte for future high-performance ECDs.
Article
Energy & Fuels
Yingming Zhao, Xiang Zhang, Wenjie Li, Zitong Li, Hulin Zhang, Mingjun Chen, Wenhai Sun, Yingjun Xiao, Jiupeng Zhao, Yao Li
Summary: A controllable crystalline structure WO3 film was prepared by adjusting the power in a magnetron sputtering deposition process. The film combined the advantages of excellent cyclic stability from highly ordered structure WO3 and fast response and satisfactory coloration efficiency from highly disordered structure WO3. The adjusted WO3 sputtered film exhibited superior electrochromic properties, and an all-solid-state electrochromic device based on this film showed excellent performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
Jiuyong Li, Youxiu Wei, Weiming Liu, Junjie Luo, Yue Yan
Summary: In this study, a novel ion conducting material Si3N4 film was successfully deposited as the ion conducting layer for all-solid-state electrochromic devices (ECDs) using pulsed direct current reactive magnetron sputtering. The Si3N4 film shows high transparency, anti-reflection effect, and remarkable electron blocking ability, demonstrating promising potential for the development of high-performance inorganic ECDs.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Energy & Fuels
Jingyu Wang, Xiaomeng Wang, Cheng Zhang, Songsheng Lin, Mingjiang Dai, Hongli Wang, Shenghui Xie, Qian Shi
Summary: The opto-electrical properties of AlSiON, based on the optimized Al3+ solid-state electrolyte Al2SiO5 doped with different levels of N elements, were systematically examined in electrochromic devices. AlSiON with an N-doping ratio of 3.4% exhibited outstanding optical modulation (58.17%) and switching speed (22.2 s for coloring and 3.5 s for bleaching), as well as effective reduction of leakage currents (68.39 mu A/cm2) in electrochromic devices. XPS analysis revealed that 3.4% AlSiON had internally bonded N content with a proportion of Si-N to Al-N bonds, effectively generating a dielectric high Si3N4 composition to block electron breakdown.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Materials Science, Multidisciplinary
Xin Zhao, Xiang Zhang, Zhiwei Yin, Wenjie Li, Changpeng Yang, Wenhai Sun, Hulin Zhang, Yao Li
Summary: In this work, W-doped NiO films were prepared by RF magnetron co-sputtering to improve the performance of NiO. The optical modulation of W-NiO was significantly improved compared with pure NiO, and the response time was similar to NiO film. The all-solid-state electrochromic devices (ECDs) employing W-NiO showed high modulation capabilities and great potential for applications in smart windows and spacecraft thermal control devices.
Review
Polymer Science
Benedict Wen-Cheun Au, Kah-Yoong Chan
Summary: Smart windows, or switchable glasses, have attracted attention for their ability to save energy in commercial buildings. This paper reviews recent advances in solid electrolytes as potential solutions to the drawbacks of current liquid-based electrolytes.
Article
Energy & Fuels
Hongli Wang, Jingyu Wang, Qian Shi, Yifan Su, Peng Tang, Shuqi Huang, Songsheng Lin, Mingjiang Dai
Summary: Amorphous lithium phosphorus oxynitride (LiPON) films with various thicknesses were prepared by RF magnetron sputtering as an electrolyte layer for inorganic all-solid-state electrochromic devices. The LiPON films exhibited an ionic conductivity of approximately 10-6 S/cm measured by electrochemical impedance spectroscopy and an average optical transmittance over 80% characterized by UV-Vis spectroscopy, indicating their suitability for electrochromic applications. Monoclinic electrochromic devices (ITO/NiOx/LiPON/WO3/ITO) with different LiPON thicknesses were fabricated and studied, showing that the electro-optical properties were significantly affected by the thickness and surface roughness of the LiPON films. The optimal performance was achieved when the LiPON thickness was 450 nm, with the highest optical contrast (68.4% at 560 nm), shortest switching time (27s), and best cycling stability (optical modulation degradation of 6.93% for 200 cycles).
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Multidisciplinary
Jiuyong Li, Weiming Liu, Youxiu Wei, Yue Yan
Summary: In this work, an all solid-state electrochromic device (ECD) has been prepared using SiO2 film as the electrolyte layer. The device exhibits low leakage current, high optical modulation, fast response speed, excellent cycle stability, and high coloration efficiency.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Ceramics
Jia Hanxiang, Shao Zewei, Huang Aibin, Jin Pingshi, Cao Xun
Summary: The all-solid-state ECDs integrated with LiAlOx/Ta2O5/LiAlOx (ATA) sandwich structured electrolyte exhibit excellent coloration efficiency, fast switching speed, and cycling stability. The introduction of ATA sandwich structured electrolyte provides superb optical transmittance and substantial sputtering efficiency for the ECDs, making them suitable for fast color switching applications.
JOURNAL OF INORGANIC MATERIALS
(2021)
Article
Engineering, Environmental
Ranjana Venugopal, Gayathri Prabhu T. Ganesh, Bhagya B. Swayamprabha, Amritha Philomina, Lakshmi V. Kulathur, Nayan Dev Madhavan, Biswapriya Deb
Summary: A general strategy for incorporating diverse functions in electrochromic dynamic windows was presented, leading to the fabrication of all-solid electrochromic devices with high modulation and excellent shielding performance. These devices exhibit four voltage-selective modes, superior charge storage density, and energy-saving effects. By using EC glasses, significant energy savings can be achieved, surpassing the energy generation from standard solar cells.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Devesh K. Pathak, Tanushree Ghosh, Suchita Kandpal, Chanchal Rani, Rajesh Kumar
Summary: The fabrication of a solid state device by combining two different conducting polymers, polyaniline (PANI) and polythiophene (P3HT), enables the display of three primary colors in a single system. The electrochromic properties are demonstrated on both electrodes, achieved by selecting an appropriate bias. The device delivers faster switching (500 ms) and better coloration efficiency up to 540 cm2/ C, thanks to the complementary redox activity of the PANI and P3HT electrodes.
Article
Chemistry, Physical
Rui Wang, Lijun Pan, Qiaonan Han, Hongbing Zhu, Meixiu Wan, Yaohua Mai
Summary: The properties of Ta2O5 thin films deposited through DC reactive magnetron sputtering at different working pressures were studied, with the 2.0 Pa Ta2O5 SEL showing the best performance in ATF-ECDs with high optical modulation and fast switch speeds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ozlem Duyar Coskun, Selen Demirel, Gamze Atak
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Chemistry, Physical
Gamze Atak, Ozlem Duyar Coskun
SOLID STATE IONICS
(2017)
Article
Materials Science, Multidisciplinary
Gamze Atak, Ozlem Duyar Coskun
Article
Materials Science, Multidisciplinary
Gamze Atak, Ozlem Duyar Coskun
Article
Chemistry, Physical
Gamze Atak, Ozlem Duyar Coskun
SOLID STATE IONICS
(2019)
Article
Electrochemistry
Gamze Atak, Ilknur Bayrak Pehlivan, Jose Montero, Claes G. Granqvist, Gunnar A. Niklasson
Summary: Thin films of W oxide were prepared by reactive DC magnetron sputtering, and the study focused on the influence of critical deposition parameters on electrochromic properties. The results showed that a judicious choice of deposition parameters could yield films with superior cycling durability, providing a pathway towards W oxide films with excellent EC properties.
ELECTROCHIMICA ACTA
(2021)
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.