Fig. 9: Prevention of the corrosion of metal counter electrodes.
From: Recent progress in the development of high-efficiency inverted perovskite solar cells
a Device configuration and schematic diagram of a bismuth electrode blocking both inward and outward penetration. b Energy level diagram of the corresponding device. Reproduced with permission from Ref. 128. Copyright 2019, Nature Publishing Group. c Device structure and schematic diagram of BTA molecules chemically coordinating with a Cu electrode and forming an insoluble and polymeric film of [BTA-Cu]. d Long-term MPPT of devices with and without BTA under continuous illumination. Reproduced with permission from Ref. 129. Copyright 2020, American Association for the Advancement of Science.
