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A dopant-free 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT)-based hole transporting layer for highly stable perovskite solar cells with efficiency over 22%
J. Mater. Chem. A, 2022, Advance ArticleDOI: 10.1039/D2TA01541B, Paperİsmail Cihan Kaya, Resul Ozdemir, Hakan Usta, Savas SonmezogluHerein, we have demonstrated n–i–p PSCs with an efficiency of 22.45% and high thermal stability using dopant-free 2,7-di…