Efficient lead-free antimony halide light-emitting diodes with 22% external quantum efficiency via a binary host-guest architecture.

Jinyang Li, Kele Liao, Jiajia Zhang, Fanglong Yuan

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Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Jinyang LiKey Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.ORCID 0009-0006-2247-7661

Kele LiaoKey Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.

Jiajia ZhangAnhui Provincial Key Laboratory of Green Carbon Chemistry, School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, China.

Fanglong YuanKey Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.ORCID 0000-0003-4619-275X

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6 · The paper itself

Abstract

Lead halide emitters hold great promise for next-generation light-emitting diodes (LEDs), but their heavy metal toxicity poses major barriers to commercialization. Therefore, developing efficient lead-free metal halide LEDs is highly desirable but remains a big challenge. Here, we report solution-processed lead-free antimony halide-based LEDs with an external quantum efficiency of 22% and a current efficiency of 55.84 candelas per ampere. The exceptional device performance is achieved through a binary host-guest architecture using a zero-dimensional organic-inorganic antimony(III) halide, which exhibits bright emission with a near-unity photoluminescence quantum yield. Optical and photophysical studies combined with theoretical calculations reveal the mechanism underlying its highly efficient self-trapped exciton emission. Efficient LEDs were achieved by doping (AylPPh

Identifiers

PMID41512072

DOI10.1126/sciadv.adz5689

PMCPMC12787535

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