Inexpensive Hole‐Transporting Materials Derived from Tröger's Base Afford Efficient and Stable Perovskite Solar Cells
Copyright policy )Inexpensive Hole‐Transporting Materials Derived from Tröger's Base Afford Efficient and Stable Perovskite Solar Cells
AbstractThe 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.
- École Polytechnique Fédérale de Lausanne EPFL Switzerland
- Kaunas University of Technology Lithuania
- Institute of Chemical and Engineering Sciences Singapore
- Agency for Science, Technology and Research Singapore
- Technical University of Munich Germany
perovskites, hole transporting material ; perovskite ; Tröger's base scaffold ; enamines, Tröger's base scaffold, troger's base, lengths, low-cost, highly efficient, hole transporting material, solar cells, hole transporting materials, enamines, perovskite
perovskites, hole transporting material ; perovskite ; Tröger's base scaffold ; enamines, Tröger's base scaffold, troger's base, lengths, low-cost, highly efficient, hole transporting material, solar cells, hole transporting materials, enamines, perovskite
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