Evidence map›Paper›PMID 41570339›Full record

ArticleACS applied materials & interfaces2026

Enhancing Sky-Blue Perovskite Light-Emitting Diode Performance through Guanidinium-Based Dual-Functional Molecular Engineering.

Yu-Hsiang Teng, Hou Li, Chiung-Han Chen, Yen-Yu Wang, Bi-Hsuan Lin, I-Chih Ni, Chi-Ching Kuo, Yu-Jung Lu, Chu-Chen Chueh

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Article in ACS applied materials & interfaces, 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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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Yu-Hsiang TengDepartment of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Hou LiDepartment of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Chiung-Han ChenDepartment of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Yen-Yu WangResearch Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.
Bi-Hsuan LinNational Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.ORCID 0000-0002-8978-5478
I-Chih NiGraduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan.
Chi-Ching KuoDepartment of Molecular Science and Engineering, Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan.ORCID 0000-0002-1994-4664
Yu-Jung LuResearch Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.ORCID 0000-0002-3932-653X
Chu-Chen ChuehDepartment of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.ORCID 0000-0003-1203-4227

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for next-generation display and lighting technologies due to their high photoluminescence quantum yield, tunable emission characteristics, and narrow spectral bandwidth. However, achieving efficient and stable blue emission remains a significant challenge, primarily due to poor phase purity, excessive trap density, and unfavorable energy level alignment. Herein, we propose a dual-functional molecular engineering strategy utilizing 4-guanidinobenzoic acid hydrochloride (GBAC) as both a buried interfacial layer and a bulk additive. When employed at the buried interface, GBAC enhances surface wettability and precursor spreading, thereby improving film morphology and crystallinity. This additional layer also helps optimize energy level alignment between the hole transport layer and the perovskite emissive layer, reducing the injection potential barrier. Simultaneously, when acting as an additive in the bulk phase, GBAC's guanidinium group binds to undercoordinated Pb

Indexed as

defect passivationdual-functional molecular engineeringperovskite light-emitting diodesphase distribution regulationsky-blue emission

Identifiers

PMID41570339
PMCPMC12884467

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