Search

Your search keyword '"Zha, Wusong"' showing total 28 results
Start Over Author "Zha, Wusong"
28 results on '"Zha, Wusong"'

4. Inverted organic solar cells with an in situ-derived SiOxNypassivation layer and power conversion efficiency exceeding 18%

Author

Liu, Bowen, Sandberg, Oskar J., Qin, Jian, Liu, Yueying, Wilken, Sebastian, Wu, Na, Yu, Xuelai, Fang, Jin, Li, Zhiyun, Huang, Rong, Zha, Wusong, Luo, Qun, Tan, Hongwei, Österbacka, Ronald, and Ma, Chang-Qi

Abstract

Inverted organic solar cells are attractive for commercialization. However, their power conversion efficiency (PCE) still lags their conventional architecture counterpart. Here we propose a new approach to enhance the performance and stability of structure-inverted non-fullerene organic solar cells. We use an in situ-derived inorganic SiOxNypassivation layer, formed by curing a solution-deposited perhydropolysilazane thin film in ambient atmosphere on top of the commonly used ZnO transport layer. Oxygen vacancies and dangling bonds of ZnO create a doped region in the photoactive layer, leading to losses in photocurrent due to enhanced recombination of photogenerated holes within this region. The optimized SiOxNyinterlayer effectively passivates the ZnO surface defects by forming Zn–O–Si bonds, leading to a vanishing doped region. At the same time, SiOxNyinduces a preferential accumulation of the non-fullerene acceptor near the electron contact, which also favours charge extraction. The combination of both effects leads to increased photocurrent density and PCE, with certified PCE values of 18.49% and 18.06% for cells with active areas of 5.77 mm2and 100.17 mm2, respectively, using PM6:L8-BO as the photoactive layer. Importantly, cells containing inorganic SiOxNyexhibit an estimated T80lifetime of 24,700 h (where T80is the time it takes for the PCE to drop to 80% of its initial value) under white light illumination, corresponding to an operational lifespan exceeding 16 years. The results underscore the potential of our approach for practical applications of highly efficient and stable inverted organic solar cells.

Published
2025
Full Text
View/download PDF

10. An ITO‐Free Kesterite Solar Cell

Author

Ji, Yixiong, primary, Chen, Wangxian, additional, Yan, Di, additional, Bullock, James, additional, Xu, Yang, additional, Su, Zhenghua, additional, Yang, Wentong, additional, Laird, Jamie Stuart, additional, Zheng, Tian, additional, Wu, Na, additional, Zha, Wusong, additional, Luo, Qun, additional, Ma, Chang‐Qi, additional, Smith, Trevor A., additional, Liu, Fangyang, additional, and Mulvaney, Paul, additional

Published
2023
Full Text
View/download PDF

11. Bulk Contact Between Silver Nanowires Top Electrode and Interface Layer Enables High Performance of Full‐Solution‐Processed Semitransparent Organic Solar Cell Module

Author

Zha, Wusong, primary, Chen, Li-Min, additional, Sun, Shaoming, additional, Gao, Xiaomei, additional, Han, Yunfei, additional, Liu, Tong, additional, Luo, Qun, additional, Chao, Yu-Chiang, additional, Zan, Hsiao-Wen, additional, Meng, Hsin-Fei, additional, Zhu, Xiaozhang, additional, and Ma, Chang-Qi, additional

Published
2023
Full Text
View/download PDF

13. An ITO‐Free Kesterite Solar Cell.

Author

Ji, Yixiong, Chen, Wangxian, Yan, Di, Bullock, James, Xu, Yang, Su, Zhenghua, Yang, Wentong, Laird, Jamie Stuart, Zheng, Tian, Wu, Na, Zha, Wusong, Luo, Qun, Ma, Chang‐Qi, Smith, Trevor A., Liu, Fangyang, and Mulvaney, Paul

Published
2024
Full Text
View/download PDF

14. A Multifunctional Molecular Bridging Layer for High Efficiency, Hysteresis‐Free, and Stable Perovskite Solar Cells

Author

Yin, Li, primary, Ding, Changzeng, additional, Liu, Chenguang, additional, Zhao, Chun, additional, Zha, Wusong, additional, Mitrovic, Ivona Z., additional, Lim, Eng Gee, additional, Han, Yunfei, additional, Gao, Xiaomei, additional, Zhang, Lianping, additional, Wang, Haibin, additional, Li, Yuanxi, additional, Wilken, Sebastian, additional, Österbacka, Ronald, additional, Lin, Hongzhen, additional, Ma, Chang‐Qi, additional, and Zhao, Cezhou, additional

Published
2023
Full Text
View/download PDF

16. In situ performance and stability tests of large-area flexible polymer solar cells in the 35-km stratospheric environment

Author

Xu, Zihan, primary, Xu, Guoning, additional, Luo, Qun, additional, Han, Yunfei, additional, Tang, Yu, additional, Miao, Ying, additional, Li, Yongxiang, additional, Qin, Jian, additional, Guo, Jingbo, additional, Zha, Wusong, additional, Gong, Chao, additional, Lu, Kun, additional, Zhang, Jianqi, additional, Wei, Zhixiang, additional, Cai, Rong, additional, Yang, Yanchu, additional, Li, Zhaojie, additional, and Ma, Chang-Qi, additional

Published
2022
Full Text
View/download PDF

19. In situ performance and stability tests of large-area flexible polymer solar cells in the 35-km stratospheric environment.

Author

Xu, Zihan, Xu, Guoning, Luo, Qun, Han, Yunfei, Tang, Yu, Miao, Ying, Li, Yongxiang, Qin, Jian, Guo, Jingbo, Zha, Wusong, Gong, Chao, Lu, Kun, Zhang, Jianqi, Wei, Zhixiang, Cai, Rong, Yang, Yanchu, Li, Zhaojie, and Ma, Chang-Qi

Subjects
SOLAR cells, PHOTOVOLTAIC power systems, THERMOCYCLING, POWER density, THERMAL batteries, POLYMERS
Abstract

Flexible organic solar cells (FOSCs) are one of the most promising power sources for aerospace aircraft due to their attractive advantages with high power-per-weight ratio and excellent mechanical flexibility. Understanding the performance and stability of high-performance FOSCs is essential for the further development of FOSCs for aerospace applications. In this paper, after systematic investigations on the performance of the state-of-the-art high-performance solar cells under thermal cycle and intensive UV irradiation conditions, in situ performance and stability tests of the solar cells in the 35 km stratospheric environment were carried out through a high-altitude balloon uploading. The encapsulated FOSCs with an area of 0.64 cm2 gave the highest power density of 15.26 mW/cm2 and an efficiency over 11%, corresponding to a power-per-weight ratio of over 3.32 kW/kg. More importantly, the cells showed stable power output during the 3-h continuous flight at 35 km and only 10% performance decay after return to the lab, suggesting promising stability of the FOSCs in the stratospheric environment. Flexible organic solar cell was launched to 35 km stratosphere through a high-altitude balloon, showing a high specific power ratio of 3.32 kW/kg and very good stability. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

22. Simultaneous Improvement of the Long‐Term and Thermal Stability of the Perovskite Solar Cells Using 2,3,4,5,6‐Pentafluorobenzoyl Chloride (PFBC)‐Capped ZnO Nanoparticles Buffer Layer

Author

Ismail, Irfan, primary, Wei, Junfeng, additional, Sun, Xue, additional, Zha, Wusong, additional, Khalil, Maria, additional, Zhang, Lianping, additional, Huang, Rong, additional, Chen, Zhenjie, additional, Shen, Yanbin, additional, Li, Fangsen, additional, Luo, Qun, additional, and Ma, Chang-Qi, additional

Published
2020
Full Text
View/download PDF

25. Efficiency above 12% for 1 cm 2 Flexible Organic Solar Cells with Ag/Cu Grid Transparent Conducting Electrode

Author

Han, Yunfei, primary, Chen, Xiaolian, additional, Wei, Junfeng, additional, Ji, Guoqi, additional, Wang, Chen, additional, Zhao, Wenchao, additional, Lai, Junqi, additional, Zha, Wusong, additional, Li, Zerui, additional, Yan, Lingpeng, additional, Gu, Huiming, additional, Luo, Qun, additional, Chen, Qi, additional, Chen, Liwei, additional, Hou, Jianhui, additional, Su, Wenming, additional, and Ma, Chang‐Qi, additional

Published
2019
Full Text
View/download PDF

26. In situperformance and stability tests of large-area flexible polymer solar cells in the 35-km stratospheric environment

Author

Xu, Zihan, Xu, Guoning, Luo, Qun, Han, Yunfei, Tang, Yu, Miao, Ying, Li, Yongxiang, Qin, Jian, Guo, Jingbo, Zha, Wusong, Gong, Chao, Lu, Kun, Zhang, Jianqi, Wei, Zhixiang, Cai, Rong, Yang, Yanchu, Li, Zhaojie, and Ma, Chang-Qi

Abstract

Flexible organic solar cells (FOSCs) are one of the most promising power sources for aerospace aircraft due to their attractive advantages with high power-per-weight ratio and excellent mechanical flexibility. Understanding the performance and stability of high-performance FOSCs is essential for the further development of FOSCs for aerospace applications. In this paper, after systematic investigations on the performance of the state-of-the-art high-performance solar cells under thermal cycle and intensive UV irradiation conditions, in situperformance and stability tests of the solar cells in the 35 km stratospheric environment were carried out through a high-altitude balloon uploading. The encapsulated FOSCs with an area of 0.64 cm2gave the highest power density of 15.26 mW/cm2and an efficiency over 11%, corresponding to a power-per-weight ratio of over 3.32 kW/kg. More importantly, the cells showed stable power output during the 3-h continuous flight at 35 km and only 10% performance decay after return to the lab, suggesting promising stability of the FOSCs in the stratospheric environment.Flexible organic solar cell was launched to 35 km stratosphere through a high-altitude balloon, showing a high specific power ratio of 3.32 kW/kg and very good stability.

Published
2023
Full Text
View/download PDF

27. Efficiency above 12% for 1 cm2 Flexible Organic Solar Cells with Ag/Cu Grid Transparent Conducting Electrode.

Author

Han, Yunfei, Chen, Xiaolian, Wei, Junfeng, Ji, Guoqi, Wang, Chen, Zhao, Wenchao, Lai, Junqi, Zha, Wusong, Li, Zerui, Yan, Lingpeng, Gu, Huiming, Luo, Qun, Chen, Qi, Chen, Liwei, Hou, Jianhui, Su, Wenming, and Ma, Chang‐Qi

Subjects
SOLAR cells, DYE-sensitized solar cells, SILICON solar cells, OXIDE electrodes, INDIUM tin oxide, ELECTRODES, BUFFER layers, INDIUM oxide
Abstract

With the rapid progress of organic solar cells (OSCs), improvement in the efficiency of large‐area flexible OSCs (>1 cm2) is crucial for real applications. However, the development of the large‐area flexible OSCs severely lags behind the growth of the small‐area OSCs, with the electrical loss due to the large sheet resistance of the electrode being a main reason. Herein, a high conductive and high transparent Ag/Cu composite grid with sheet resistance <1 Ω sq−1 and an average visible light transparency of 84% is produced as the transparent conducting electrode of flexible OSCs. Based on this Ag/Cu composite grid electrode, a high efficiency of 12.26% for 1 cm2 flexible OSCs is achieved. The performances of large‐area flexible OSCs also reach 7.79% (4 cm2) and 7.35% (9 cm2), respectively, which are much higher than those of the control devices with conventional flexible indium tin oxide electrodes. Surface planarization using highly conductive PEDOT:PSS and modification of the ZnO buffer layer by zirconium acetylacetonate (ZrAcac) are two necessary steps to achieve high performance. The flexible OSCs employing Ag/Cu grid have excellent mechanical bending resistance, maintaining high performance after bending at a radius of 2 mm. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

28. 12.42% Monolithic 25.42 cm 2 Flexible Organic Solar Cells Enabled by an Amorphous ITO-Modified Metal Grid Electrode.

Author

Han Y, Hu Z, Zha W, Chen X, Yin L, Guo J, Li Z, Luo Q, Su W, and Ma CQ

Abstract

Printed metal nanogrid electrode exhibits superior characteristics for use in flexible organic solar cells (OSCs). However, the high surface roughness and inhomogeneity between grid and blank region is adverse for performance improvement. In this work, a thin amorphous indium tin oxide (ITO) film (α-ITO) is introduced to fill the blank and to improve the charge transporting. The introduction of α-ITO significantly improves the comprehensive properties of metal grid electrode, which exhibits excellent bending resistance and long-term stability under double 85 condition (under 85 °C and 85% relative humidity) for 200 h. Both experimental and simulation results reveal α-ITO with a sheet resistance of 20 000 Ω □ -1 is sufficient to improve the charge transporting within the adjacent grids, leading to a remarkable efficiency of 16.54% for 1 cm 2 flexible devices. With area increased to 4.00, 9.00, and 25.42 cm 2 , the devices still display a performance of 16.22%, 14.69%, and 12.42%, respectively, showing less efficiency loss during upscaling. And the 25.42 cm 2 monolithic flexible device exhibits a certificated efficiency of 12.03%. Moreover, the device shows significantly improved air stability relative to conventional high-conductive poly(3,4-ethylenedioxythiophene):polystyrene sulfonate-modified device. All these make the α-ITO-modified Ag/Cu electrode promise to achieve high-efficient and long-term stable large-area flexible OSCs., (© 2022 Wiley-VCH GmbH.)

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results