1. Inexpensive Hole‐Transporting Materials Derived from Tröger's Base Afford Efficient and Stable Perovskite Solar Cells.
- Author
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Braukyla, Titas, Xia, Rui, Daskeviciene, Maryte, Malinauskas, Tadas, Gruodis, Alytis, Jankauskas, Vygintas, Fei, Zhaofu, Momblona, Cristina, Roldán‐Carmona, Cristina, Dyson, Paul J., Getautis, Vytautas, and Nazeeruddin, Mohammad Khaja
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SOLAR cells , *PEROVSKITE , *DYE-sensitized solar cells , *MATERIALS , *HIGH temperatures - Abstract
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 (Tg=176 °C) of HTM3 also suggests promising perspectives in device applications. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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