Efficient and stable planar CH_3NH_3PbI_x(SCN)_(3-x) perovskite solar cells fabricated in ambient atmosphere with low temperature process

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• 英文论文题名：Efficient and stable planar CH_3NH_3PbI_x(SCN)_(3-x) perovskite solar cells fabricated in ambient atmosphere with low temperature process
• 论文作者：Zongbao Zhang ; Yangyang Cai ; Yang Zhou ; Hui Liu ; Qiqi Qin ; Sujuan Wu ; Junming Liu
• 英文论文作者：Zongbao Zhang ; Yangyang Cai ; Yang Zhou ; Hui Liu ; Qiqi Qin ; Sujuan Wu ; Junming Liu ; Institute for Advanced Materials and Laboratory of Quantum Engineering and Quantum Materials ; South China Normal University ; Laboratory of Solid State Microstructures ; Nanjing University
• 年：2017
• 作者机构：Institute for Advanced Materials and Laboratory of Quantum Engineering and Quantum Materials, South China Normal University;Laboratory of Solid State Microstructures, Nanjing University;
• 英文论文关键词：planar perovskite solar cells ; low-temperature ; air-processed ; CH3NH3PbIx(SCN)3-x
• 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：471k
• 原文格式：D
• 会议级别：全国

摘要

Low-temperature and air-processed planar perovskite solar cells have gained considerable attentions.However, the main challenges for the device are to improve the high efficiency and the stability in ambient atmosphere.Here, we obtain a pinhole-free and large grain size CH_3NH_3PbI_x(SCN)_(3-x) film by incorporating alkali salts into the precursor based low temperature n-i-p planar structure with a sequent two-steps method in ambient air.By optimizing the fabrication processes and the concentrations of added alkali salts, the devices with A(B) additive demonstrate a high efficiency of 16.23%(15.63%) compared to the 12.73% for control samples.Importantly, the device shows remarkably better stability than a corresponding device without alkali salts additive, with only 20% degradation over 30 days stored in humid air without encapsulation.All these findings provide a facile approach to fabricating efficient and stable roll-to-roll flexible perovskite solar cells at a large scale in ambient air.
Low-temperature and air-processed planar perovskite solar cells have gained considerable attentions.However, the main challenges for the device are to improve the high efficiency and the stability in ambient atmosphere.Here, we obtain a pinhole-free and large grain size CH_3NH_3PbI_x(SCN)_(3-x) film by incorporating alkali salts into the precursor based low temperature n-i-p planar structure with a sequent two-steps method in ambient air.By optimizing the fabrication processes and the concentrations of added alkali salts, the devices with A(B) additive demonstrate a high efficiency of 16.23%(15.63%) compared to the 12.73% for control samples.Importantly, the device shows remarkably better stability than a corresponding device without alkali salts additive, with only 20% degradation over 30 days stored in humid air without encapsulation.All these findings provide a facile approach to fabricating efficient and stable roll-to-roll flexible perovskite solar cells at a large scale in ambient air.

引文

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