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Electron transport materials (ETMs) play a significant role in perovskite solar cells (PSCs). However, conventional solution processable organic ETMs are mainly restricted to fullerene derivatives and it is challenging to obtain nonfullerene ETMs with satisfactory properties. In this work, a new organic semiconductor SPS‐4F is synthesized by utilizing the classical spiro[fluorine‐9′9‐thioxanthene]...
In article number 2001073, Hong Meng, Feng Yan, and co‐workers design, synthesize, and successfully use a non‐fullerene electron transport material based on a new spiro derivative, SPS‐4F, in perovskite solar cells, leading to high efficiency as well as good stability of the devices. This work opens a new avenue for developing new spiro‐based electron transport materials and paves a way for realizing...
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