Degradation of organometallic perovskite solar cells induced by trap states
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- 英文论文题名：Degradation of organometallic perovskite solar cells induced by trap states
- 论文作者：Jun Ji ; Shangyi Dou ; Chunlan Zhou ; Endong Jia ; Dong Wei ; Peng Cui ; Meicheng Li
- 英文论文作者：Jun Ji ; Shangyi Dou ; Chunlan Zhou ; Endong Jia ; Dong Wei ; Peng Cui ; Meicheng Li ; North China Electric Power University ; Institute of Electrical Engineering ; Academia Sinica
- 年：2017
- 作者机构：North China Electric Power University;Institute of Electrical Engineering,Academia Sinica;
- 英文论文关键词：perovskite solar cells ; degradation ; trap states
- 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：706k
- 原文格式：D
- 会议级别：全国
摘要
The degradation of organometallic perovskite solar cells(PSCs) is the key bottleneck hampering their developments, which is typically ascribed to the decomposition of perovskite(CH_3NH_3PbI_3).However, we hold the different opinion that the increased trap states induced by the increased defects at the surface of perovskite result the original degradation of the devices.Degradation of PSCs is observed to be significant, with the efficiency decreased to 70% origin performance in ambient air for 7 days.However, no obvious decomposition or structural evolution of the perovskite was observed, except the notable degradation phenomenon of the device.The degradation of PSCs derives from deteriorated photocurrent and fill factor, which are proved to be induced by increased trap states for enlarged carrier recombination in degraded PSCs.The increased trap states in PSCs over storage time are probably induced by the increased defects at the surface of perovskite.The trap states induced degradation provides a physical insight into the degradation mechanisms of PSCs.Moreover, as the investigations were performed on real PSCs instead of individual perovskite films, the findings here present one of their actual degradation mechanisms.
The degradation of organometallic perovskite solar cells(PSCs) is the key bottleneck hampering their developments, which is typically ascribed to the decomposition of perovskite(CH_3NH_3PbI_3).However, we hold the different opinion that the increased trap states induced by the increased defects at the surface of perovskite result the original degradation of the devices.Degradation of PSCs is observed to be significant, with the efficiency decreased to 70% origin performance in ambient air for 7 days.However, no obvious decomposition or structural evolution of the perovskite was observed, except the notable degradation phenomenon of the device.The degradation of PSCs derives from deteriorated photocurrent and fill factor, which are proved to be induced by increased trap states for enlarged carrier recombination in degraded PSCs.The increased trap states in PSCs over storage time are probably induced by the increased defects at the surface of perovskite.The trap states induced degradation provides a physical insight into the degradation mechanisms of PSCs.Moreover, as the investigations were performed on real PSCs instead of individual perovskite films, the findings here present one of their actual degradation mechanisms.
The degradation of organometallic perovskite solar cells(PSCs) is the key bottleneck hampering their developments, which is typically ascribed to the decomposition of perovskite(CH_3NH_3PbI_3).However, we hold the different opinion that the increased trap states induced by the increased defects at the surface of perovskite result the original degradation of the devices.Degradation of PSCs is observed to be significant, with the efficiency decreased to 70% origin performance in ambient air for 7 days.However, no obvious decomposition or structural evolution of the perovskite was observed, except the notable degradation phenomenon of the device.The degradation of PSCs derives from deteriorated photocurrent and fill factor, which are proved to be induced by increased trap states for enlarged carrier recombination in degraded PSCs.The increased trap states in PSCs over storage time are probably induced by the increased defects at the surface of perovskite.The trap states induced degradation provides a physical insight into the degradation mechanisms of PSCs.Moreover, as the investigations were performed on real PSCs instead of individual perovskite films, the findings here present one of their actual degradation mechanisms.
引文
[1]D.Song,J.Ji,M.Li,*et al.,Applied Physics Letters,2016,108,093901.
[2]T.Wang,J.Chen,M.Li,*et al.,Journal of Semiconductors,2017,38,014005.
[3]P.Cui,P.Fu,M.Li,*et al.,RSC Advances,2015,5,75622.
[4]Z.Zhang,X.Yue,M.Li,*et al.,RSC Advances,2015,5,104606.
[2]T.Wang,J.Chen,M.Li,*et al.,Journal of Semiconductors,2017,38,014005.
[3]P.Cui,P.Fu,M.Li,*et al.,RSC Advances,2015,5,75622.
[4]Z.Zhang,X.Yue,M.Li,*et al.,RSC Advances,2015,5,104606.