Fig. 8: Strategies for modifying ETMs.
From: Recent progress in the development of high-efficiency inverted perovskite solar cells
a Energy level diagram of the various components in the corresponding inverted PSCs. b Schematic diagram of CeOx improving device stability. Reproduced with permission from Ref. 125. Copyright 2018, American Chemical Society. c Representative dark J-V curves of electron-only devices with different interfacial layers between PCBM–Ag contacts. d Operational stability of champion perovskite devices both with and without interfacial bilayers. Reproduced with permission from Ref. 126. Copyright 2020, Royal Society of Chemistry. e Schematic diagram of the configuration of a series-connected all-perovskite tandem module with CDB. Reproduced with permission from Ref. 127. Copyright 2022, American Association for the Advancement of Science.
