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. 2025 Dec 3.
doi: 10.1039/d5mh01949d. Online ahead of print.

Interface-modified NiMgOx layers with dibenzocarbazole molecules for high-efficiency perovskite light-emitting diodes

Hyungdoh Lee  1 , Jun-Seo Lee  1 , Seungmin Shin  1 , Wonjeong Yu  1 , In Hye Kwak  2 , Hyung Joong Yun  2 , Seungbum Hong  1 , Himchan Cho  1   3
Affiliations

Interface-modified NiMgOx layers with dibenzocarbazole molecules for high-efficiency perovskite light-emitting diodes

Hyungdoh Lee et al. Mater Horiz. .

Abstract

Nickel magnesium oxide is a stable hole injection layer for PeLEDs but suffers from poor hole injection and interfacial quenching. Here, we introduce [4-(7H-dibenzo[c,g]carbazol-7-yl)butyl]phosphonic acid (4PADCB) as an interlayer that passivates interfacial defects, suppresses luminescence quenching, and lowers hole injection barriers, boosting external quantum efficiency from 5.5% to 14.4%.

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