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Photoelectric and thermochromic properties of CsPbIBr2-based all inorganic semitransparent devices

基于CsPbIBr2的全无机半透明器件的光伏性能与热 致变色性能

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Abstract

The photovoltaic thermochromic smart window, which combines perovskite with thermochromic and photovoltaic properties, can not only control the solar transmittance at different temperatures, but also convert the absorbed light energy into usable electric energy. Herein, we designed a fluoride-doped tin oxide (FTO)/SnO2/CsPbIBr2/NiOx/indium tin oxide (ITO) semitransparent solar cell structure by using the optimized post-annealing process and obtained an average visible transmittance (AVT) of 33.2% and a power conversion efficiency of 3.89% under the optimal conditions. Meanwhile, based on the thermochromic properties of CsPbIBr2, it was found that the AVT of the device improved from 33.2% to 73.5% when CsPbIBr2 converted from the colored high-temperature phase to the transparent low-temperature phase. Besides, the transition from high-temperature phase to low-temperature phase is humidity-dominated. When the relative humidity rises from 50% to 90%, the phase transition time of perovskite decreases substantially from 1005 to 17 min. However, the excessively fast phase transition caused by high humidity will destroy the thin film morphology and crystal structure of perovskite, causing irreversible damage to CsPbIBr2 perovskite. This work is promising for the application of semitransparent photovoltaic and thermochromic smart window, which represents an attractive prospect in further reducing the energy consumption of buildings and automobiles.

摘要

光伏热致变色智能窗采用钙钛矿材料并结合其热致变色和光伏 特性, 既可调控不同温度下的太阳光透过率, 又可将吸收的光能转化为 可用的电能. 在此, 我们利用经过优化的后退火工艺设计了一个结构为 氟掺杂氧化锡(FTO)/SnO2/CsPbIBr2/NiOx/铟锡氧化物(ITO)的半透明 太阳能电池, 在最佳条件下其平均可见光透过率为33.2%, 光电转化效 率为3.89%. 同时, 基于CsPbIBr2的热致变色特性, 我们发现当其由高温 着色相转变为低温透明相时, 器件的平均可见透过率可从33.2%提高至 73.5%. ´此外, 高温相向低温相的转变受湿度主导. 当相对湿度从50%上升至90%时, 钙钛矿相变时间从1005分钟大幅度下降至17分钟. 然而, 过 高的湿度导致的过快相变会破坏钙钛矿的薄膜形貌和晶体结构, 这将 对CsPbIBr2钙钛矿造成不可逆损伤. 这项工作为半透明光伏和热致变 色智能窗的应用提供了重要参考, 并可预见这一领域将进一步助力降 低建筑和汽车能耗.

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Acknowledgements

This work was supported by the Key R&D program of Guangzhou (202007020004), the Natural Science Foundation of Guangdong Province (2018A0303130146), the Project of Science and Technology of Guangzhou (201904010171), and the Open Fund of State Key Laboratory of Luminescent Materials and Devices (2023-skllmd-05).

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Authors and Affiliations

  1. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China

    Rui Ge  (葛锐), Yajie Zhao  (赵亚洁), Chengyu Jiang  (江成玉), Jieyuan Zheng  (郑捷元), Lirong Chen  (陈莉蓉), Yang Zheng  (郑洋), Gang Xu  (徐刚) & Xiudi Xiao  (肖秀娣)

  2. School of Energy Science and Engineering, University of Science and Technology of China, Hefei, 230026, China

    Rui Ge  (葛锐), Yajie Zhao  (赵亚洁), Chengyu Jiang  (江成玉), Lirong Chen  (陈莉蓉) & Yang Zheng  (郑洋)

  3. University of Chinese Academy of Sciences, Beijing, 100049, China

    Jieyuan Zheng  (郑捷元)

  4. State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China

    Xiudi Xiao  (肖秀娣)

Authors
  1. Rui Ge  (葛锐)
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  2. Yajie Zhao  (赵亚洁)
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  6. Yang Zheng  (郑洋)
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  7. Gang Xu  (徐刚)
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  8. Xiudi Xiao  (肖秀娣)
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Contributions

Xiao X supervised the project. Xiao X, Ge R and Zhao Y conceived the ideas for the project and designed the experiments. Zhao Y and Ge R performed the film and device fabrication. Jiang C, Zheng J, Chen L, and Zheng Y characterized the films and devices. Ge R, Zhao Y, Jiang C, Zheng J, Chen L, and Zheng Y optimized the photovoltaic performance of devices together. Ge R and Zhao Y performed the analysis and wrote the manuscript. Xiao X and Xu G revised the manuscript. All authors discussed the results.

Corresponding author

Correspondence to Xiudi Xiao  (肖秀娣).

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Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary information

Supporting data are available in the online version of the paper.

Rui Ge is currently pursuing her Master’s degree under the supervision of Prof. Xiudi Xiao at the University of Science and Technology of China. Her current research interests focus on perovskite solar cells.

Xiudi Xiao is a professor at the University of Science and Technology of China. Her research interest includes stimuli-responsive photo-electronic functional systems, and color-changing devices based on thermochromic or electrochromic materials.

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Ge, R., Zhao, Y., Jiang, C. et al. Photoelectric and thermochromic properties of CsPbIBr2-based all inorganic semitransparent devices. Sci. China Mater. 66, 3261–3270 (2023). https://doi.org/10.1007/s40843-022-2450-8

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  • DOI: https://doi.org/10.1007/s40843-022-2450-8

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