Direct measurement of electron affinity of carbazole-based self-assembled monolayer used as hole-selective layer in high-efficiency perovskite solar cells
Aruto Akatsuka,
Makoto Miura,
Gaurav Kapil
et al.
Abstract:Carbazole-based self-assembled monolayers have received considerable attention as hole-selective layers (HSLs) in inverted perovskite solar cells. As an HSL, the electron-blocking capability is important and directly related to electron affinity (EA). Low-energy inverse photoelectron spectroscopy (LEIPS) is the most reliable method for EA measurement. However, the intense electron-impact-induced fluorescence from carbazole interferes with their measurement. By improving the photon detector, we were able to mea… Show more
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