Fabrication of highly transparent CsPbBr3 quantum-dot thin film via bath coating for light emission applications

How Wei Ke, Ian Yi Yu Bu, Bo Jun Chen, Chun Chih Hu, Yaw Shyan Fu, Tzung Fang Guo

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Metal halide perovskite is not easy to form a film due to its high crystallinity, which makes it unfavourable for its application in self-luminous LED. Herein, we propose a film synthesis process for perovskite quantum dots (PeQDs) based on bath coating. The proposed method is low in cost, can be performed in an atmospheric environment at room temperature, and is suitable for the rapid mass production of closely stacked PeQDs on the deposition substrate with excellent luminous characteristics. By controlling the deposit time and rotation speed, the monolayer QD film can be achieved. The deposited monolayer QD film shows a high transmittance of up to 86% and a narrow FWHM of 18 nm. The device fabricated by monolayer QD film shows a low threshold voltage of 3 V, the maximum luminance of 150 cd/m2, the maximum current efficiency of 0.085 cd/A, the maximum EQE of 0.027%, and the high color purity of 87%. Due to the above properties, monolayer QD film elements have potential in smart home appliances and wearable devices, especially AR glasses.

Original languageEnglish
Pages (from-to)15729-15736
Number of pages8
JournalCeramics International
Volume48
Issue number11
DOIs
Publication statusPublished - 2022 Jun 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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