Chemical Reduction of Intrinsic Defects in Thicker Heterojunction Planar Perovskite Solar Cells
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- 英文论文题名：Chemical Reduction of Intrinsic Defects in Thicker Heterojunction Planar Perovskite Solar Cells
- 论文作者：Zonghao Liu ; Junnan Hu ; Haoyang Jiao ; Ning Zhou ; Huanping Zhou
- 英文论文作者：Zonghao Liu ; Junnan Hu ; Haoyang Jiao ; Ning Zhou ; Huanping Zhou ; Happy Lab ; College of Engineering ; Peking University
- 年：2017
- 作者机构：Happy Lab, College of Engineering,Peking University;
- 英文论文关键词：additives ; defects ; high efficiency ; perovskites ; solar cells
- 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：668k
- 原文格式：D
- 会议级别：全国
摘要
Minimization of defects in absorber materials is essential for hybrid perovskite solar cells, especially when constructing thick polycrystalline layers in a planar configuration.Here, a simple methylamine solution-based additive is reported to improve film quality with nearly an order of magnitude reduction in intrinsic defect concentration.In the resultant film, an increase in carrier lifetime as a result of a decrease in shallow electronic disorder is observed.This superior crystalline film quality is further evidenced via a doubled spin relaxation time as compared with other reports.Bearing sufficient carrier diffusion length, a thick absorber layer(≈650 nm) is implemented in planar devices to achieve a champion power conversion efficiency of 20.02% with a stabilized output efficiency of 19.01% under one sun illumination.This work demonstrates a simple approach to improve hybrid perovskite film quality by substantial reduction of intrinsic defects for wide applications in optoelectronics.
Minimization of defects in absorber materials is essential for hybrid perovskite solar cells, especially when constructing thick polycrystalline layers in a planar configuration.Here, a simple methylamine solution-based additive is reported to improve film quality with nearly an order of magnitude reduction in intrinsic defect concentration.In the resultant film, an increase in carrier lifetime as a result of a decrease in shallow electronic disorder is observed.This superior crystalline film quality is further evidenced via a doubled spin relaxation time as compared with other reports.Bearing sufficient carrier diffusion length, a thick absorber layer(≈650 nm) is implemented in planar devices to achieve a champion power conversion efficiency of 20.02% with a stabilized output efficiency of 19.01% under one sun illumination.This work demonstrates a simple approach to improve hybrid perovskite film quality by substantial reduction of intrinsic defects for wide applications in optoelectronics.
Minimization of defects in absorber materials is essential for hybrid perovskite solar cells, especially when constructing thick polycrystalline layers in a planar configuration.Here, a simple methylamine solution-based additive is reported to improve film quality with nearly an order of magnitude reduction in intrinsic defect concentration.In the resultant film, an increase in carrier lifetime as a result of a decrease in shallow electronic disorder is observed.This superior crystalline film quality is further evidenced via a doubled spin relaxation time as compared with other reports.Bearing sufficient carrier diffusion length, a thick absorber layer(≈650 nm) is implemented in planar devices to achieve a champion power conversion efficiency of 20.02% with a stabilized output efficiency of 19.01% under one sun illumination.This work demonstrates a simple approach to improve hybrid perovskite film quality by substantial reduction of intrinsic defects for wide applications in optoelectronics.
引文
[1]Zonghao Liu et.al.,Adv.Mater.2017,DOI:10.1002/adma.201606774.