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Inexpensive Hole‐Transporting Materials Derived from Tröger's Base Afford Efficient and Stable Perovskite Solar Cells
Author(s) -
Braukyla Titas,
Xia Rui,
Daskeviciene Maryte,
Malinauskas Tadas,
Gruodis Alytis,
Jankauskas Vygintas,
Fei Zhaofu,
Momblona Cristina,
RoldánCarmona Cristina,
Dyson Paul J.,
Getautis Vytautas,
Nazeeruddin Mohammad Khaja
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201903705
Subject(s) - dopant , inert , materials science , perovskite (structure) , base (topology) , chemical engineering , catalysis , energy conversion efficiency , nanotechnology , combinatorial chemistry , chemistry , doping , organic chemistry , optoelectronics , mathematical analysis , mathematics , engineering
The synthesis of three enamine hole‐transporting materials (HTMs) based on Tröger's base scaffold are reported. These compounds are obtained in a three‐step facile synthesis from commercially available materials without the need of expensive catalysts, inert conditions or time‐consuming purification steps. The best performing material, HTM3, demonstrated 18.62 % PCE in PSCs, rivaling spiro‐OMeTAD in efficiency, and showing markedly superior long‐term stability in non‐encapsulated devices. In dopant‐free PSCs, HTM3 outperformed spiro‐OMeTAD by a factror of 1.6. The high glass‐transition temperature ( T g =176 °C) of HTM3 also suggests promising perspectives in device applications.