Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance

Rui Sun; Donglei Zhou; Yujiao Ding; Yue Wang; Yuqi Wang; Xinmeng Zhuang; Shuainan Liu; Nan Ding; Tianyuan Wang; Wen Xu; Hongwei Song

doi:10.1038/s41377-022-01027-9

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Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance

Original Articles

- Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance
- Light: Science & Applications Vol. 11, Issue 12, Pages: 3044-3058(2022)
- Affiliations：
  
  State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
- Author bio：
  
  Donglei Zhou (zhoudl@jlu.edu.cn)
  Hongwei Song (songhw@jlu.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-01027-9
  CLC：
- Published：31 December 2022，
  
  Published Online：06 December 2022，
  
  Received：09 June 2022，
  
  Revised：10 October 2022，
  
  Accepted：25 October 2022
- Accepted：
Scan QR Code
Sun, R. et al. Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance. Light: Science & Applications, 11, 3044-3058 (2022).
DOI：

Sun, R. et al. Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance. Light: Science & Applications, 11, 3044-3058 (2022). DOI： 10.1038/s41377-022-01027-9.

摘要

Abstract

Currently

a major challenge for metal-halide perovskite light emitting diodes (LEDs) is to achieve stable and efficient white light emission due to halide ion segregation. Herein

we report a promising method to fabricate white perovskite LEDs using lanthanide (Ln

) ions doped CsPbCl

perovskite nanocrystals (PeNCs). First

ions are doped into the lattice to tune the perovskite bandgap by partially substituting Cs

ions

which are well matched to the transition energy of some Ln

ions from the ground state to the excited state

thereby greatly improving the Förster energy transfer efficiency from excitons to Ln

ions. Then

creatine phosphate (CP)

a phospholipid widely found in organisms

serves as a tightly binding surface-capping multi-functional ligand which regulates the film formation and enhances the optical and electrical properties of PeNC film. Consequently

the Eu

doped PeNCs based-white LEDs show a peak luminance of 1678 cd m

-2

and a maximum external quantum efficiency (EQE) of 5.4%

demonstrating excellent performance among existing white PeNC LEDs from a single chip. Furthermore

the method of bandgap modulation and the defect passivation were generalized to other Ln

ions doped perovskite LEDs and successfully obtained improved electroluminescence (EL). This work demonstrates the comprehensive and universal strategies in the realization of highly efficient and stable white LEDs via single-component Ln

ions doped PeNCs

which provides an optimal solution for the development of low-cost and simple white perovskite LEDs.

关键词

Keywords

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