Authors
Yanghou Wang, Guanqi Tang, Lijun Chen, Xiaolong Cao, Di He, Kun Zheng, Tian Ha, Lihao Yang, Kexian Li, Jie Tang, Liyang Yu, Longhui Zeng, Jinhua Li, Qidong Tai
Published in
Angewandte Chemie (International ed. in English). Pages e7827890. Jul 03, 2026. Epub Jul 03, 2026.
Abstract
Flexible tin perovskite solar cells (F-TPSCs) have attracted substantial attention owing to their high theoretical efficiency, eco-friendliness, and promising applications in wearable electronics and the internet of things. However, the inferior quality of perovskite buried interfaces caused by low interfacial adhesion and large deformation of plastic substrates has seriously impaired the performance of F-TPSCs. Here, a biocompatible functional material, 1-chloro-1-deoxy-D-fructose (1-CDF), has been introduced into the poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hole-transporting layer, which enables hydrogen-bonding interactions between PEDOT:PSS and both the underlying ITO and the top perovskite layer, thus significantly enhancing the interfacial adhesion. It can also regulate the crystallization dynamics of the perovskite, resulting in the growth of pinhole-free perovskite film with high crystallinity and homogeneous bottom contact. Besides, the incorperation of 1-CDF leads to conformation changes of the PEDOT:PSS, rendering higher conductivity and more matched energy level alignment with perovskites. The power conversion efficiencies (PCEs) of 15.56% (14.67% certified) and 11.06% are reached for F-TPSCs with active areas of 0.049 cm2 and 1 cm2, respectively. In addition, the F-TPSC obtains an unprecedented PCE of 22.21% under 1000 lux indoor light illumination. The unencapsulated devices also exhibit excellent stability.
PMID:
42397794
Bibliographic data and abstract were imported from PubMed on 04 Jul 2026.
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