Stability enhancement of blue organic light-emitting diodes through exciton-density-dependent degradation analysis and triplet management.

Mingliang Xie, Donghao Wen, Lei Xu, Junjie Guo, Biao Chen, Xianjie Li, Yue Yu, Yuguang Ma

Abstract read

In one paragraph

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

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Mingliang XieGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Donghao WenGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Lei XuGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Junjie GuoGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Biao ChenGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Xianjie LiGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.

Yue YuGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.ORCID https://orcid.org/0009-0005-6354-7657

Yuguang MaGuangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Device, South China University of Technology Guangzhou 510640 P. R. China yuyue924@scut.edu.cn ygma@scut.edu.cn.ORCID https://orcid.org/0000-0003-0373-5873

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Achieving long operational stability in blue organic light-emitting diodes (OLEDs) remains a challenge. Bond dissociation energy (BDE) is widely used to evaluate molecular robustness, yet it mainly reflects static chemical stability and does not account for exciton- and polaron-related degradation in operating devices. A semi-quantitative exciton-density-dependent degradation framework is developed by combining intrinsic BDE with activation-energy analysis to rationalize emitter stability under electrical excitation. The analysis indicates that the stability window of anthracene-based blue triplet-triplet annihilation (TTA) systems is affected by both intrinsic bond strength and the steady-state populations of triplet excitons and polarons. Triplet-related bond cleavage serves as a critical degradation channel, which tightens the BDE requirement. Reducing local polarons/triplet accumulation lowers the exciton-induced activation-energy contribution, mitigates bimolecular quenching, and broadens the design space for stable blue emitters. Following this principle, dual-emissive-layer blue TTA OLEDs were constructed to redistribute recombination and triplet-utilization zones, achieving a high blue index (BI ≈ 255 cd A

Identifiers

PMID42812746

DOI10.1039/d6sc05024g

PMCPMC13621510

What OpenQuestion holds

Textmetadata

Read underepoch 390

Registered trials

None linked

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.