Gold Nanoparticles Embedded in PEDOT:PSS for Enhanced Hole Injection and Negligible Exciton Quenching in OLEDs.

Yijun Ning, Suling Zhao, Yingzhuang Ma, Xin Guo

Abstract read

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Article in Nanomaterials (Basel, Switzerland), 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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5 · Who and what money

Authors and funding

4 authors.

Yijun NingSchool of Optical and Electronic Information, Suzhou City University, Suzhou 215104, China.

Suling ZhaoKey Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China.ORCID 0000-0003-0310-5628

Yingzhuang MaSchool of Optical and Electronic Information, Suzhou City University, Suzhou 215104, China.

Xin GuoSchool of Optical and Electronic Information, Suzhou City University, Suzhou 215104, China.

Funding

SUZHOU BASIC RESEARCH PROJECT SJC2023003

6 · The paper itself

Abstract

Gold nanoparticles (AuNPs) can improve hole injection in OLEDs but may also induce LSPR-related optical perturbation and exciton quenching. To exploit their hole-injection-promoting effect while suppressing possible exciton quenching, AuNPs with diameters of 3.5-4.0 nm were synthesized by citrate reduction and doped into PEDOT:PSS as a hole injection layer modifier. Photoluminescence measurements revealed absorption-related wavelength-dependent optical perturbation from exposed AuNPs, with the strongest effect on red emission and only a minor effect on blue emission. AuNPs embedded in PEDOT:PSS caused only slight changes in PL spectra and PL decay behavior, indicating that obvious exciton quenching was avoided. OLEDs with AuNP-doped PEDOT:PSS exhibited reduced turn-on voltages and increased maximum current efficiencies from 22.4 to 27.0 cd/A, 7.64 to 15.6 cd/A, and 16.8 to 29.0 cd/A for blue, red, and green devices, respectively. These results indicate that sub-5 nm AuNPs embedded in PEDOT:PSS can improve device performance by enhancing hole-injection capability, while their wavelength-dependent exciton-quenching effect is negligible.

Indexed as

AuNPsexciton quenchinghole injectionOLEDsPEDOT:PSS

Identifiers

PMID42506475

DOI10.3390/nano16140840

PMCPMC13415050

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.