期刊
ADVANCED MATERIALS
卷 34, 期 44, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202203794
关键词
inverted perovskite solar cells; organic hole-transporting layers; polymer; self-assembled monolayers; small molecules
类别
资金
- NSF of China [62104197]
- Funds for Basic Scientific Research in Central Universities [G2020KY0537]
This review systematically summarizes recent progress in using organic hole-transporting layers (HTLs) in inverted p-i-n perovskite solar cells (PSCs), including conductive polymers, small molecules, and self-assembled monolayers. The molecular structure, hole-transport properties, energy levels, and relevant device properties and performances of organic HTLs are analyzed. Design principles and future outlook for highly efficient organic HTLs in inverted PSCs are proposed, aiming to inspire further innovative development of novel organic HTLs for more efficient, stable, and scalable inverted PSCs.
Hole-transporting layers (HTLs) are an essential component in inverted, p-i-n perovskite solar cells (PSCs) where they play a decisive role in extraction and transport of holes, surface passivation, perovskite crystallization, device stability, and cost. Currently, the exploration of efficient, stable, highly transparent and low-cost HTLs is of vital importance for propelling p-i-n PSCs toward commercialization. Compared to their inorganic counterparts, organic HTLs offer multiple advantages such as a tunable bandgap and energy level, easy synthesis and purification, solution processability, and overall low cost. Here, recent progress of organic HTLs, including conductive polymers, small molecules, and self-assembled monolayers, as utilized in inverted PSCs is systematically reviewed and summarized. Their molecular structure, hole-transport properties, energy levels, and relevant device properties and resulting performances are presented and analyzed. A summary of design principles and a future outlook toward highly efficient organic HTLs in inverted PSCs is proposed. This review aims to inspire further innovative development of novel organic HTLs for more efficient, stable, and scalable inverted PSCs.
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