Evidence map›Paper›PMID 38849359›Full record

ArticleLight, science & applications2024

Single-crystalline hole-transporting layers for efficient and stable organic light-emitting devices.

Gao-Da Ye, Ran Ding, Su-Heng Li, Lei Ni, Shu-Ting Dai, Nian-Ke Chen, Yue-Feng Liu, Runda Guo, Lei Wang, Xian-Bin Li and 2 more

Abstract read
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In one paragraph

Article in Light, science & applications, 2024. 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
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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

12 authors.

Gao-Da YeState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Ran DingState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China. dingran@jlu.edu.cn.
Su-Heng LiState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Lei NiState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Shu-Ting DaiState Key Laboratory of Supermolecular Structures and Materials, The Institute of Theoretical Chemistry, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Nian-Ke ChenState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Yue-Feng LiuState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Runda GuoWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, China.
Lei WangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 430074, Wuhan, China.
Xian-Bin LiState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.ORCID http://orcid.org/0000-0002-0046-2016
Bin XuState Key Laboratory of Supermolecular Structures and Materials, The Institute of Theoretical Chemistry, Jilin University, 2699 Qianjin Street, 130012, Changchun, China.
Jing FengState Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, 130012, Changchun, China. jingfeng@jlu.edu.cn.ORCID http://orcid.org/0000-0002-4814-8907

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Efficient charge-carrier injection and transport in organic light-emitting devices (OLEDs) are essential to simultaneously achieving their high efficiency and long-term stability. However, the charge-transporting layers (CTLs) deposited by various vapor or solution processes are usually in amorphous forms, and their low charge-carrier mobilities, defect-induced high trap densities and inhomogeneous thickness with rough surface morphologies have been obstacles towards high-performance devices. Here, organic single-crystalline (SC) films were employed as the hole-transporting layers (HTLs) instead of the conventional amorphous films to fabricate highly efficient and stable OLEDs. The high-mobility and ultrasmooth morphology of the SC-HTLs facilitate superior interfacial characteristics of both HTL/electrode and HTL/emissive layer interfaces, resulting in a high Haacke's figure of merit (FoM) of the ultrathin top electrode and low series-resistance joule-heat loss ratio of the SC-OLEDs. Moreover, the thick and compact SC-HTL can function as a barrier layer against moisture and oxygen permeation. As a result, the SC-OLEDs show much improved efficiency and stability compared to the OLEDs based on amorphous or polycrystalline HTLs, suggesting a new strategy to developing advanced OLEDs with high efficiency and high stability.

Identifiers

PMID38849359
PMCPMC11161501

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