Authors
Xin Zhi, Xiaodong Wang, Dayong Liu, Rui Li, Junzhe Feng, Mingze Liu, Yang Cao, Feisong Qin, Weihua Di, Hongyan Zhao, Danning Sun, Fujun Zhang, Min Lu
Published in
Optics letters. Volume 51. Issue 21. Pages 6099-6102. Nov 01, 2026. Epub Oct 15, 2026.
Abstract
Flexible perovskite light-emitting diodes (PeLEDs) are promising for wearable and foldable displays, but their performance is often limited by substrate-related issues like high roughness and poor thermal stability. This work reports a highly efficient, mechanically robust red PeLED utilizing polybenzimidazole (PBI) as the flexible substrate. Compared with the traditional PET substrates, PBI has lower surface roughness and better wettability for the functional layer. As a result, the PeLED based on the PBI substrate achieves a maximum external quantum efficiency (EQE) of 15.7% and a maximum luminance of 3680 cd m-2, demonstrating excellent mechanical stability. This study proves that PBI, as a high-performance flexible substrate, holds immense potential for realizing high-efficiency and mechanically stable PeLEDs.
PMID:
42962133
Bibliographic data and abstract were imported from PubMed on 31 Oct 2026.
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