Lead-free perovskite solar cells with inorganic cesium tin halides
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- 英文论文题名：Lead-free perovskite solar cells with inorganic cesium tin halides
- 论文作者：Yanan Jiang ; Xiaofeng Qiu ; Bingqiang Cao
- 英文论文作者：Yanan Jiang ; Xiaofeng Qiu ; Bingqiang Cao ; Materials Research Centre for Energy and Photoelectrochemical Conversion ; School of Material Science and Engineering University of Jinan
- 年：2017
- 作者机构：Materials Research Centre for Energy and Photoelectrochemical Conversion, School of Material Science and Engineering University of Jinan;
- 英文论文关键词：Inorganic perovskite solar cell ; CsSnI3 ; Cs2SnI6 ; stability
- 会议召开时间：2017-05-27
- 会议录名称：第四届新型太阳能电池学术研讨会论文集
- 英文会议录名称：Abstract Book of the 4th Conference on New Generation Solar Cells
- 语种：英文
- 分类号：TM914.4
- 学会代码：ZKYQ
- 会议名称：第四届新型太阳能电池学术研讨会
- 会议地点：中国北京
- 主办单位：中国可再生能源学会光化学专业委员会
- 学会名称：中国科学院物理研究所清洁能源实验室
- 页数：1
- 文件大小：570k
- 原文格式：D
- 会议级别：全国
摘要
All-inorganic and lead-free cesium tin halides(CsSnX_3, X=Cl, Br, I) are highly desirable for substituting the organolead halide perovskite solar cells.Recently, we develop a two-step sequential deposition method to grow high-quality B-γ-CsSnI_3 thin films.However, such B-γ-CsSnI_3 film was unstable in air~([1]).We find the spontaneous oxidative conversion from unstable B-γ-CsSnI_3 to air-stable Cs_2SnI_6 in air.The direct bandgap semiconductor perovskite Cs_2SnI_6 with a bandgap of 1.48 eV and high absorption coefficient(over 10~5 cm~(-1) from 1.7 eV) was more thermal-stable than CsSnI_3~([2]).More importantly, the Cs_2SnI_6 film is adopted as a light absorber layer for planar and mesoporous lead-free perovskite solar cells and preliminary power conversion efficiency(PCE) about 1% was obtained~([3]).The solar cell stability measurements revealed pronounced stability of the unsealed solar cells for at least one week in air.
All-inorganic and lead-free cesium tin halides(CsSnX_3, X=Cl, Br, I) are highly desirable for substituting the organolead halide perovskite solar cells.Recently, we develop a two-step sequential deposition method to grow high-quality B-γ-CsSnI_3 thin films.However, such B-γ-CsSnI_3 film was unstable in air~([1]).We find the spontaneous oxidative conversion from unstable B-γ-CsSnI_3 to air-stable Cs_2SnI_6 in air.The direct bandgap semiconductor perovskite Cs_2SnI_6 with a bandgap of 1.48 eV and high absorption coefficient(over 10~5 cm~(-1) from 1.7 eV) was more thermal-stable than CsSnI_3~([2]).More importantly, the Cs_2SnI_6 film is adopted as a light absorber layer for planar and mesoporous lead-free perovskite solar cells and preliminary power conversion efficiency(PCE) about 1% was obtained~([3]).The solar cell stability measurements revealed pronounced stability of the unsealed solar cells for at least one week in air.
All-inorganic and lead-free cesium tin halides(CsSnX_3, X=Cl, Br, I) are highly desirable for substituting the organolead halide perovskite solar cells.Recently, we develop a two-step sequential deposition method to grow high-quality B-γ-CsSnI_3 thin films.However, such B-γ-CsSnI_3 film was unstable in air~([1]).We find the spontaneous oxidative conversion from unstable B-γ-CsSnI_3 to air-stable Cs_2SnI_6 in air.The direct bandgap semiconductor perovskite Cs_2SnI_6 with a bandgap of 1.48 eV and high absorption coefficient(over 10~5 cm~(-1) from 1.7 eV) was more thermal-stable than CsSnI_3~([2]).More importantly, the Cs_2SnI_6 film is adopted as a light absorber layer for planar and mesoporous lead-free perovskite solar cells and preliminary power conversion efficiency(PCE) about 1% was obtained~([3]).The solar cell stability measurements revealed pronounced stability of the unsealed solar cells for at least one week in air.
引文
[1]X.F.Qiu,B.Q.Cao,et al.,Solal Energy Materials&Solar Cells 2017,159,227-234.
[2]Y.N.Jiang,B.Q.Cao,et al.Materials Letters2017,199,50-52.
[3]X.F.Qiu,B.Q.Cao,et al.Phys.Status Solidi
[2]Y.N.Jiang,B.Q.Cao,et al.Materials Letters2017,199,50-52.
[3]X.F.Qiu,B.Q.Cao,et al.Phys.Status Solidi