氯在钙钛矿太阳电池中的作用（英文）

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• 论文作者：Lin Fan ; Yi Ding ; Jingshan Luo ; Biao Shi ; Xin Yao ; Changchun Wei ; Dekun Zhang ; Guangcai Wang ; Yun Sheng ; Yifeng Chen ; Anders Hagfeldt ; Ying Zhao ; Xiaodan Zhang
• 英文论文作者：Lin Fan ; Yi Ding ; Jingshan Luo ; Biao Shi ; Xin Yao ; Changchun Wei ; Dekun Zhang ; Guangcai Wang ; Yun Sheng ; Yifeng Chen ; Anders Hagfeldt ; Ying Zhao ; Xiaodan Zhang ; Institute of Photoelectronic Thin Film Devices and Technology of Nankai University ; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin ; Key Laboratory of Photoelectronic Thin Film Devices and Technology of Ministry of Education ; Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) ; Laboratory for Photonics and Interfaces ; Institute of Chemical Sciences and Engineering ; School of Basic Sciences ; Ecole Polytechnique Federale de Lausanne ; State Key Laboratory of PV Science and Technology
• 年：2017
• 作者机构：Institute of Photoelectronic Thin Film Devices and Technology of Nankai University;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Ministry of Education;Collaborative Innovation Center of Chemical Science and Engineering(Tianjin);Laboratory for Photonics and Interfaces,Institute of Chemical Sciences and Engineering,School of Basic Sciences,Ecole Polytechnique Federale de Lausanne;State Key Laboratory of PV Science and Technology;
• 英文论文关键词：planar perovskite solar cell ; MAPbI3-xClx ; PbICl precursor film ; porous structure ; surface passivation
• 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：754k
• 原文格式：D
• 会议级别：全国

摘要

It has been proposed that introducing chlorine anion in CH_3NH_3PbI_3 perovskite material can substantially improve material property as well as solar cell performance.To elucidate the role of chlorine in perovskite solar cells(PSCs), here we introduced PbCl_2 in the precursor, and studied chlorine configuration evolution during perovskite film formation and associated influence on PSC performances in detail.We found out that chlorine could be successfully incorporated into the precursor film in the form of PbICl or PbCl_2 through a properly designed preparation, and it was reserved in the final perovskite film with the configuration of MAPbCl_3, PbICl or PbCl_2 depending on the fabrication process.However, no evidence of MAPbI_(3-x)Cl_x phase was observed, it is considered that MAPbI_(3-x)Cl_x might be metastable or possesses higher formation energy.In addition, we demonstrate that the formation of porous PbICl scaffold in the precursor film plays a key role in high quality perovskite films realization benefiting from an effective stress release during structure expansion after methylammonium iodide dripping.Moreover, we propose that residual amorphous PbCl_2 can effectively passivate defects in perovskite film, and dramatically improve film electrical properties.Finally, n-i-p type planar PSCs with efficiencies up to 19.45% were achieved.It should be mentioned that the whole process for the PSCs with less 100 ℃ is beneficial for a wide range of applications, such as flexible and tandem solar cells.
It has been proposed that introducing chlorine anion in CH_3NH_3PbI_3 perovskite material can substantially improve material property as well as solar cell performance.To elucidate the role of chlorine in perovskite solar cells(PSCs), here we introduced PbCl_2 in the precursor, and studied chlorine configuration evolution during perovskite film formation and associated influence on PSC performances in detail.We found out that chlorine could be successfully incorporated into the precursor film in the form of PbICl or PbCl_2 through a properly designed preparation, and it was reserved in the final perovskite film with the configuration of MAPbCl_3, PbICl or PbCl_2 depending on the fabrication process.However, no evidence of MAPbI_(3-x)Cl_x phase was observed, it is considered that MAPbI_(3-x)Cl_x might be metastable or possesses higher formation energy.In addition, we demonstrate that the formation of porous PbICl scaffold in the precursor film plays a key role in high quality perovskite films realization benefiting from an effective stress release during structure expansion after methylammonium iodide dripping.Moreover, we propose that residual amorphous PbCl_2 can effectively passivate defects in perovskite film, and dramatically improve film electrical properties.Finally, n-i-p type planar PSCs with efficiencies up to 19.45% were achieved.It should be mentioned that the whole process for the PSCs with less 100 ℃ is beneficial for a wide range of applications, such as flexible and tandem solar cells.

引文

[1]Lin Fan,Yi Ding et.al.,J.Mater.Chem.A,2017,5,7423.