中国物理B ›› 2022, Vol. 31 ›› Issue (11): 118801-118801.doi: 10.1088/1674-1056/ac67c5

所属专题： SPECIAL TOPIC — Emerging photovoltaic materials and devices

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Sputtered SnO2 as an interlayer for efficient semitransparent perovskite solar cells

Zheng Fang(方正)1,2,†, Liu Yang(杨柳)2,†, Yongbin Jin(靳永斌)2,†, Kaikai Liu(刘凯凯)2, Huiping Feng(酆辉平)2, Bingru Deng(邓冰如)2, Lingfang Zheng(郑玲芳)2, Changcai Cui(崔长彩)1, Chengbo Tian(田成波)2, Liqiang Xie(谢立强)2,‡, Xipeng Xu(徐西鹏)1,§, and Zhanhua Wei(魏展画)2,¶   

  1. 1 MOE Engineering Research Center for Brittle Materials Machining, Institute of Manufacturing Engineering, College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China;
    2 Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
  • 收稿日期:2022-03-04 修回日期:2022-04-13 接受日期:2022-04-18 出版日期:2022-10-17 发布日期:2022-10-25
  • 通讯作者: Liqiang Xie, Xipeng Xu, Zhanhua Wei E-mail:lqxie@hqu.edu.cn;xpxu@hqu.edu.cn;weizhanhua@hqu.edu.cn
  • 基金资助:
    This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 22179042, U21A2078, and 51902110), the Natural Science Foundation of Fujian Province, China (Grant Nos. 2020J06021, 2019J01057, and 2020J01064), Scientific Research Funds of Huaqiao University, and Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (Grant Nos. ZQN-PY607 and ZQN-806).

Sputtered SnO2 as an interlayer for efficient semitransparent perovskite solar cells

Zheng Fang(方正)1,2,†, Liu Yang(杨柳)2,†, Yongbin Jin(靳永斌)2,†, Kaikai Liu(刘凯凯)2, Huiping Feng(酆辉平)2, Bingru Deng(邓冰如)2, Lingfang Zheng(郑玲芳)2, Changcai Cui(崔长彩)1, Chengbo Tian(田成波)2, Liqiang Xie(谢立强)2,‡, Xipeng Xu(徐西鹏)1,§, and Zhanhua Wei(魏展画)2,¶   

  1. 1 MOE Engineering Research Center for Brittle Materials Machining, Institute of Manufacturing Engineering, College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China;
    2 Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
  • Received:2022-03-04 Revised:2022-04-13 Accepted:2022-04-18 Online:2022-10-17 Published:2022-10-25
  • Contact: Liqiang Xie, Xipeng Xu, Zhanhua Wei E-mail:lqxie@hqu.edu.cn;xpxu@hqu.edu.cn;weizhanhua@hqu.edu.cn
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 22179042, U21A2078, and 51902110), the Natural Science Foundation of Fujian Province, China (Grant Nos. 2020J06021, 2019J01057, and 2020J01064), Scientific Research Funds of Huaqiao University, and Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (Grant Nos. ZQN-PY607 and ZQN-806).

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摘要： SnO2 is widely used as the electron transport layer (ETL) in perovskite solar cells (PSCs) due to its excellent electron mobility, low processing temperature, and low cost. And the most common way of preparing the SnO2 ETL is spin-coating using the corresponding colloid solution. However, the spin-coated SnO2 layer is sometimes not so compact and contains pinholes, weakening the hole blocking capability. Here, a SnO2 thin film prepared through magnetron-sputtering was inserted between ITO and the spin-coated SnO2 acted as an interlayer. This strategy can combine the advantages of efficient electron extraction and hole blocking due to the high compactness of the sputtered film and the excellent electronic property of the spin-coated SnO2. Therefore, the recombination of photo-generated carriers at the interface is significantly reduced. As a result, the semitransparent perovskite solar cells (with a bandgap of 1.73 eV) based on this double-layered SnO2 demonstrate a maximum efficiency of 17.7% (stabilized at 17.04%) with negligible hysteresis. Moreover, the shelf stability of the device is also significantly improved, maintaining 95% of the initial efficiency after 800-hours of aging.

关键词: semitransparent perovskite solar cells, sputtering, interlayer, hole blocking

Abstract: SnO2 is widely used as the electron transport layer (ETL) in perovskite solar cells (PSCs) due to its excellent electron mobility, low processing temperature, and low cost. And the most common way of preparing the SnO2 ETL is spin-coating using the corresponding colloid solution. However, the spin-coated SnO2 layer is sometimes not so compact and contains pinholes, weakening the hole blocking capability. Here, a SnO2 thin film prepared through magnetron-sputtering was inserted between ITO and the spin-coated SnO2 acted as an interlayer. This strategy can combine the advantages of efficient electron extraction and hole blocking due to the high compactness of the sputtered film and the excellent electronic property of the spin-coated SnO2. Therefore, the recombination of photo-generated carriers at the interface is significantly reduced. As a result, the semitransparent perovskite solar cells (with a bandgap of 1.73 eV) based on this double-layered SnO2 demonstrate a maximum efficiency of 17.7% (stabilized at 17.04%) with negligible hysteresis. Moreover, the shelf stability of the device is also significantly improved, maintaining 95% of the initial efficiency after 800-hours of aging.

Key words: semitransparent perovskite solar cells, sputtering, interlayer, hole blocking

中图分类号:  (Solar cells (photovoltaics))

  • 88.40.H-
88.40.hj (Efficiency and performance of solar cells)