1. Enhanced interfacial characteristics of perovskite solar cell with multi-functional organic hole-selective interlayer
- Author
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Bum Ho Jeong, Bong-Gi Kim, Hui Joon Park, Jihyeon Heo, Hyojin Kye, Hansol Park, and Sooji Hwang
- Subjects
Planar ,Materials science ,Chemical engineering ,Passivation ,Process Chemistry and Technology ,General Chemical Engineering ,Halide ,Molecule ,Perovskite solar cell ,Hole transport layer ,Perovskite (structure) - Abstract
In solution-processed organic and inorganic halide perovskite solar cells (PSCs), managing the interfacial characteristics between multi-layers has been a crucial factor in determining their performance and stability. Here, we newly design an indolocarbazole-based organic molecule that can enhance the interfacial properties between a solution-processed NiOx hole transport layer and perovskite in p-i-n planar PSC. Especially, to be beneficial to this architecture, its visible transparency and energy level are optimized, and its chemical structure is crosslinked for better solution processability as a hole-selective interlayer. More importantly, it can passivate the defects in the perovskite film, consequently enhancing the quality of the film and suppressing non-radiative recombination in the devices. With this interface modification, we confirm that the performance and stability of PSC devices are largely enhanced.
- Published
- 2022