%0 Journal Article
%A Liu, Xiaodong
%A Yu, Hao
%A Yan, Li
%A Dong, Qingqing
%A Wan, Qun
%A Zhou, Yi
%A Song, Bo
%A Li, Yongfang
%D 2015
%T Triple
Cathode Buffer Layers Composed of PCBM, C60, and LiF for
High-Performance Planar Perovskite Solar Cells
%U https://acs.figshare.com/articles/journal_contribution/Triple_Cathode_Buffer_Layers_Composed_of_PCBM_C_sub_60_sub_and_LiF_for_High_Performance_Planar_Perovskite_Solar_Cells/2185429
%R 10.1021/acsami.5b00468.s001
%2 https://ndownloader.figshare.com/files/3819595
%K C 60 layer
%K charge collection process
%K cathode buffer layers
%K PCBM buffer layer
%K PCE
%K Triple Cathode Buffer Layers Composed
%K LiF layer
%K power conversion efficiency
%K ITO
%K PSC
%K CBL
%K AM 1.5 G
%X In this paper, triple cathode buffer
layers (CBLs) composed of phenyl-C61-butyric acid methyl ester (PCBM),
C60, and LiF layers were introduced into the planar p–i–n
perovskite solar cells (p–i–n PSCs) with a device structure
of ITO/PEDOT:PSS/CH3NH3PbI3–xClx/CBLs/Al. For comparison,
a single CBL of PCBM and a double CBL of PCBM/LiF were also investigated
in the p–i–n PSCs. On the basis of the PCBM buffer layer,
the addition of a thin LiF layer facilitated the charge collection
process and led to the dramatic improvement of the power conversion
efficiency (PCE) of the PSCs up to 14.69% under an illumination of
AM 1.5G, 100 mW/cm2, which is to date one of the highest
efficiencies of the p–i–n PSCs. By further insertion
of a C60 layer between PCBM and LiF in the triple CBLs,
a PCE of 14.24% was obtained, and more importantly, the PCBM/C60/LiF triple CBLs are very helpful for improving the stability
of the devices and making the LiF layer less thickness-sensitive for
achieving high performances of the p–i–n PSCs.
%I ACS Publications