TY - JOUR
T1 - Propeller-Shaped, Triarylamine-Rich, and Dopant-Free Hole-Transporting Materials for Efficient n-i-p Perovskite Solar Cells
AU - Cui, Bin Bin
AU - Han, Ying
AU - Yang, Ning
AU - Yang, Shuangshuang
AU - Zhang, Liuzhu
AU - Wang, Yue
AU - Jia, Yifei
AU - Zhao, Lin
AU - Zhong, Yu Wu
AU - Chen, Qi
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/12/5
Y1 - 2018/12/5
N2 - By introducing six triarylamine groups to a hexaphenylbenzene (HPB) or a hexakis(2-thienyl)benzene (HTB) core, two propeller-shaped, triarylamine-rich, and low-cost hole-transporting materials (HTMs), which are termed as HPB-OMe and HTB-OMe, respectively, with considerable hole mobility, were obtained by easy synthetic routes. Solid-state planar perovskite CH 3 NH 3 PbI 3 solar cells (PSCs) with two new HTMs showed high power conversion efficiencies (12.9% for HPB-OMe and 17.3% for HTB-OMe in forward scans) under standard 100 mW cm -2 AM 1.5G illumination without doping. A comparison of matched-degree of energy levels, hole-transporting ability, photovoltaic conversion efficiencies, and recombination of the two HTMs indicated that developing multi-triarylamine- and thiophene-rich molecules provides candidate and efficient dopant-free HTMs for PSCs.
AB - By introducing six triarylamine groups to a hexaphenylbenzene (HPB) or a hexakis(2-thienyl)benzene (HTB) core, two propeller-shaped, triarylamine-rich, and low-cost hole-transporting materials (HTMs), which are termed as HPB-OMe and HTB-OMe, respectively, with considerable hole mobility, were obtained by easy synthetic routes. Solid-state planar perovskite CH 3 NH 3 PbI 3 solar cells (PSCs) with two new HTMs showed high power conversion efficiencies (12.9% for HPB-OMe and 17.3% for HTB-OMe in forward scans) under standard 100 mW cm -2 AM 1.5G illumination without doping. A comparison of matched-degree of energy levels, hole-transporting ability, photovoltaic conversion efficiencies, and recombination of the two HTMs indicated that developing multi-triarylamine- and thiophene-rich molecules provides candidate and efficient dopant-free HTMs for PSCs.
KW - free-dopant
KW - perovskite solar cells
KW - photovoltaic conversion
KW - triarylamine-rich hole-transporting materials
KW - π-π stacking
UR - http://www.scopus.com/inward/record.url?scp=85057524448&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b15423
DO - 10.1021/acsami.8b15423
M3 - Article
C2 - 30406985
AN - SCOPUS:85057524448
SN - 1944-8244
VL - 10
SP - 41592
EP - 41598
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 48
ER -
