Metal–Organic Framework-Assisted Metal-Ion Doping in All-Inorganic Perovskite for Dual-Mode Image Sensing Display

Jin Woo Oh, Hyowon Han, Hong Hee Kim, Hyeokjung Lee, Dongjun Kim, Jiyeon Lee, Jiwon Kim, Won Kook Choi, Cheolmin Park

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Crystal engineering based on defect passivation with metal ions doped into halide perovskites is of considerable interest for tailoring the photoelectric properties of perovskites. Herein, a simple and robust approach for doping metal ions into a thin all-inorganic CsPbBr3 perovskite film by employing metal–organic framework nanoparticles is presented. Zeolitic imidazolate framework-8 nanoparticles, which can adsorb water, are dispersed and embedded in a thin perovskite film. The particles self-decompose at a certain humidity, releasing Zn2+ ions into nearby perovskite crystals. The Zn2+ ions efficiently passivate the undercoordinated defect sites of the defective perovskite crystals, resulting in environmentally stable and enhanced photoluminescence of the perovskite with a quantum yield of ≈14%, more than 24 times greater than that without nanoparticles. Further, a thin Zn-doped CsPbBr3 film is employed to fabricate arrays of ultraviolet photodetectors, and ≈90% of the initial photocurrent is maintained over 15 d in RH 60%, facilitating the development of a dual-mode image sensor using which programmed images are visualized based on both photocurrent and photoluminescence.

Original languageEnglish
Article number2111894
JournalAdvanced Functional Materials
Volume32
Issue number18
DOIs
Publication statusPublished - 2022 May 2

Bibliographical note

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Condensed Matter Physics
  • General Materials Science
  • Electrochemistry
  • Biomaterials

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