Spray-coated nanocrystalline CsPbBr3 perovskite thin-films for large area and efficient rigid and flexible light emitting diodes

Jin Kyoung Park, Seong Yeon Kim, Jun Ho Kim, Jin Hyuck Heo, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Large area and efficient CsPbBr3 perovskite light emitting diodes (PeLEDs) were demonstrated by readily commercializable spray-coating method. The PeLEDs with controlled crystal grain size exhibited maximum electroluminescence peak position of ~534 nm, emission spectrum of ~18 nm of full width at half maximum, maximum luminance of 20388 cd/m2, maximum current efficiency of 51.0 cd/A, and maximum external quantum efficiency of 11.19%. The large area glass substrate-based rigid PeLED and polymer substrate-based flexible PeLED were also successfully demonstrated. In addition, the PeLEDs with controlled crystal grain size could generate electric power in a daytime like solar cells, which gained power conversion efficiency of 0.43–1.03% at 1 sun condition (AM 1.5 G 100 mW/cm2).

Original languageEnglish
Article number165560
JournalJournal of Alloys and Compounds
Volume918
DOIs
Publication statusPublished - 2022 Oct 15

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea ( NRF ) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program (no. 2021R1A5A6002853 )) and Nano-Material Technology Development Program (no. 2017M3A7B4041696 ).

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

  • Flexible LED
  • LED
  • Large area
  • Perovskite
  • Spray-coating

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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