Title Anchor engineering of hole-selective enamine-based self-assembling monolayers for perovskite solar cells
Authors Krisiune, Deimante ; Yang, Yuxuan ; Xu, Yongde ; Tian, Hao ; Xiao, Chuanxiao ; Xia, Jianxing ; Zafarghandi, Mahan Saberi ; Mohammadian, Ali Keshavarz ; Astani, Negar Ashari ; Rakstys, Kasparas ; Zhang, Yi ; Getautis, Vytautas
DOI 10.1002/advs.76950
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Is Part of Advanced science.. Heidelberg : Wiley-VCH. 2026, Early access, p. 1-13.. ISSN 2198-3844
Keywords [eng] enamine ; energy conversion efficiency ; materials science ; monolayer ; nanotechnology ; perovskite ; photovoltaic system ; renewable energy ; solar energy
Abstract [eng] The transition to renewable energy sources, particularly solar power, has highlighted the potential of next-generation perovskite solar cells (PSCs), which have achieved a power conversion efficiency (PCE) over 27%, rivaling conventional silicon solar cells. A critical component in p-i-n PSCs is hole transporting layer (HTL), where polymers like PTAA have shown promise but face challenges in efficiency and commercial viability hindered by high costs and complex synthesis. Recently, enamine-based HTMs have emerged as a promising alternative due to their superior charge transport properties, structure's tunability, and cost-effectiveness. Additionally, self-assembling monolayers (SAMs) have been explored to improve inverted PSC performance by enhancing interface properties and reducing material use. This study combines enamine chemistry and self-assembly to engineer enamine-based SAMs with various structural units having ─COOH and ─PO(OH)2 anchoring groups to optimize SAM/TCO interface and reduce recombination losses. The resulting p-i-n devices exhibit high power conversion efficiencies (>25.5%) and improved stability. The champion mini-module with an aperture area of 29.7 cm2 realizes a PCE of 23.14% with an FF of 83.11%, highlighting the potential of these materials for scalable photovoltaic applications.
Published Heidelberg : Wiley-VCH
Type Journal article
Language English
Publication date 2026
CC license CC license description