Authors | Hansol Park, Hyojin Kye, Bum Ho Jeong, Jihyeon Heo, Sooji Hwang, Bong-Gi Kim*, Hui Joon Park* |
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Title | Enhanced Interfacial Characteristics of Perovskite Solar Cell with Multi-Functional Polymeric Hole-Selective Interlayer |
Journal | Dyes and Pigments |
Volume and page | 197, 109837 (2022.01.01) |
Year of publication | 2022 |
Link | https://www.sciencedirect.com/science/article/abs/pii/S0143720821007038 |
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.