Highly efficient and ultrahigh-resolution quantum dot light-emitting diodes via photoisomeric transformation

Chenglong Wu; Chengzhao Luo; Yonghuan Huo; Zixuan Chen; Chengze Xu; Xin Zhou; Zhiyong Zheng; Xinwen Wang; Zhenwei Ren; Yu Chen

doi:10.1038/s41377-026-02246-0

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Highly efficient and ultrahigh-resolution quantum dot light-emitting diodes via photoisomeric transformation

Original Articles

- Highly efficient and ultrahigh-resolution quantum dot light-emitting diodes via photoisomeric transformation
- Light: Science & Applications Vol. 15, Issue 6, Pages: 1870-1883(2026)
- Affiliations：
  
  1.School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
  2.National University of Singapore Suzhou Research Institute, Dushu Lake Science and Education Innovation District, Suzhou 215123, China
- Author bio：
  
  Chengzhao Luo (czluo@suda.edu.cn)
  Zhenwei Ren (zhwren@suda.edu.cn)
  Yu Chen (chenyu_ny@suda.edu.cn)
- Funds：
- DOI：10.1038/s41377-026-02246-0
  CLC：
- Received：21 September 2025，
  
  Revised：2026-01-26，
  
  Accepted：11 February 2026，
  
  Online First：09 March 2026，
  
  Published：30 June 2026
- Accepted：
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Wu, C. L. et al. Highly efficient and ultrahigh-resolution quantum dot light-emitting diodes via photoisomeric transformation. Light: Science & Applications, 15, 1870-1883 (2026).
DOI：

Wu, C. L. et al. Highly efficient and ultrahigh-resolution quantum dot light-emitting diodes via photoisomeric transformation. Light: Science & Applications, 15, 1870-1883 (2026). DOI： 10.1038/s41377-026-02246-0.

摘要

Abstract

The direct photopatterning technique provides a straightforward approach for high-resolution quantum dot (QD) patterns for next-generation displays. However

the extensively deteriorated QD optical properties deriving from the changes of the QD surface states and/or surroundings set substantial limitations in obtaining high-quality QD patterns and efficient electroluminescent devices. Here

we propose an ingenious and effective approach by utilizing the photoisomeric transformation from spiropyran to merocyanine for highly emissive QD patterns. We reveal the suppression of non-radiative energy transfer between QDs and the dissociative merocyanine for fast luminescence recovery. We achieve small-sized (0.8 μm)

high-resolution (15

800 pixels per inch

PPI)

high-fidelity (~100%)

multicolor

and elaborated QD pixels

and showcase their good compatibility for CdSe/ZnS and perovskite QD pixel fabrication

as well as on both rigid and flexible substrates. These merits promote highly performing pixelated devices with a large luminance of 35

534 cd m

−

and a record efficiency of 24.5% at 6350 PPI among the direct photopatterning devices. Furthermore

we verify the wide applicability of the proposed strategy for high-performance pixelated perovskite devices with an efficiency of 13.8% at 1760 PPI. The above results confirm the great value of the proposed approach for high-quality QD patterns and high-performance pixelated devices.

关键词

Keywords

references

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