TY - JOUR
T1 - Reduced-Dimensional Perovskite Enabled by Organic Diamine for Efficient Photovoltaics
AU - Niu, Tingting
AU - Ren, Hui
AU - Wu, Bo
AU - Xia, Yingdong
AU - Xie, Xiaoji
AU - Yang, Yingguo
AU - Gao, Xingyu
AU - Chen, Yonghua
AU - Huang, Wei
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/5/16
Y1 - 2019/5/16
N2 - Reduced-dimensional (RD) perovskite solar cells (PSCs) are emerging as highly attractive alternatives to three-dimensional (3D) PSCs due to their dramatically improved environmental stability and photostability. Diamine-based RD perovskites with a single organic amine interlayer possess orderly inorganic sheets and a smaller insulation area, indicating great potential in combining high efficiency and long-term stability. Here, we report an efficient and stable RD PSC based on 1,4-butanediamine (BDA). We found that the BDA-based RD perovskite exhibits improved crystallinity, reduced trap-state densities, and enhanced charge mobility compared to those of butylamine (BA)-based RD (BA-RD) perovskite. A high power conversion efficiency of 17.91% was achieved with negligible hysteresis. Moreover, the device showed improved stability compared to those of BA-RD and 3D films and devices. The findings may inspire new developments in introducing organic diamine for efficient and stable RD PSCs.
AB - Reduced-dimensional (RD) perovskite solar cells (PSCs) are emerging as highly attractive alternatives to three-dimensional (3D) PSCs due to their dramatically improved environmental stability and photostability. Diamine-based RD perovskites with a single organic amine interlayer possess orderly inorganic sheets and a smaller insulation area, indicating great potential in combining high efficiency and long-term stability. Here, we report an efficient and stable RD PSC based on 1,4-butanediamine (BDA). We found that the BDA-based RD perovskite exhibits improved crystallinity, reduced trap-state densities, and enhanced charge mobility compared to those of butylamine (BA)-based RD (BA-RD) perovskite. A high power conversion efficiency of 17.91% was achieved with negligible hysteresis. Moreover, the device showed improved stability compared to those of BA-RD and 3D films and devices. The findings may inspire new developments in introducing organic diamine for efficient and stable RD PSCs.
UR - http://www.scopus.com/inward/record.url?scp=85065845143&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.9b00750
DO - 10.1021/acs.jpclett.9b00750
M3 - 文章
C2 - 31007024
AN - SCOPUS:85065845143
SN - 1948-7185
VL - 10
SP - 2349
EP - 2356
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 10
ER -