TY  - JOUR
AU  - Yao, Zhaoyang
AU  - Zhang, Fuguo
AU  - Guo, Yaxiao
AU  - Wu, Heng
AU  - He, Lanlan
AU  - Liu, Zhou
AU  - Cai, Bin
AU  - Guo, Yu
AU  - Brett, Calvin
AU  - Li, Yuanyuan
AU  - Srambickal, Chinmaya Venugopal
AU  - Yang, Xichuan
AU  - Chen, Gang
AU  - Widengren, Jerker
AU  - Liu, Dianyi
AU  - Gardner, James M.
AU  - Kloo, Lars
AU  - Sun, Licheng
TI  - Conformational and Compositional Tuning of Phenanthrocarbazole-Based Dopant-Free Hole-Transport Polymers Boosting the Performance of Perovskite Solar Cells
JO  - Journal of the American Chemical Society
VL  - 142
IS  - 41
SN  - 1520-5126
CY  - Washington, DC
PB  - American Chemical Society
M1  - PUBDB-2021-00600
SP  - 17681 - 17692
PY  - 2020
AB  - Conjugated polymers are regarded as promising candidates for dopant-free hole-transport materials (HTMs) in efficient and stable perovskite solar cells (PSCs). Thus far, the vast majority of polymeric HTMs feature structurally complicated benzo[1,2-b:4,5-b’]dithiophene (BDT) analogs and electron-withdrawing heterocycles, forming a strong donor–acceptor (D–A) structure. Herein, a new class of phenanthrocarbazole (PC)-based polymeric HTMs (PC1, PC2, and PC3) has been synthesized by inserting a PC unit into a polymeric thiophene or selenophene chain with the aim of enhancing the π–π stacking of adjacent polymer chains and also to efficiently interact with the perovskite surface through the broad and planar conjugated backbone of the PC. Suitable energy levels, excellent thermostability, and humidity resistivity together with remarkable photoelectric properties are obtained via meticulously tuning the conformation and elemental composition of the polymers. As a result, PSCs containing PC3 as dopant-free HTM show a stabilized power conversion efficiency (PCE) of 20.8
LB  - PUB:(DE-HGF)16
C6  - pmid:32924464
UR  - <Go to ISI:>//WOS:000579400400055
DO  - DOI:10.1021/jacs.0c08352
UR  - https://bib-pubdb1.desy.de/record/454549
ER  -