All-Inorganic Metal Halide Perovskite (CsPbX3; X = Cl, Br, I) Nanocrystal-Based Photodetectors

Junhyuk Ahn, Junhyeok Park, Soong Ju Oh

Research output: Contribution to journalArticlepeer-review


Currently, photodetectors are being extensively studied and developed for next-generation applications, such as in autonomous vehicles and image sensors. In this regard, all-inorganic metal halide perovskite (CsPbX3; X = Cl, Br, and I) nanocrystals (NCs) have emerged as promising building blocks for various applications owing to their high absorption coefficients, tunable bandgaps, high defect tolerances, and solution processability. These features, which are typically required for the development of advanced optoelectronics, can be engineered by modifying the chemical compositions and surface chemistry of the NCs. Herein, we briefly review various strategies adopted for the application of CsPbX3perovskite NCs in photodetectors and for improving device performance. First, modifications of the chemical compositions of CsPbX3NCs to tune their optical bandgaps and improve the charge-transport mechanism are discussed. Second, the application of surface chemistry to improve oxidation resistance and carrier mobility is described. In the future, perovskite NCs with prospective features, such as non-toxicity and high resistance to external stimuli, are expected to be developed for practical applications.

Original languageEnglish
Pages (from-to)383-388
Number of pages6
JournalJournal of Sensor Science and Technology
Issue number6
Publication statusPublished - 2022 Nov

Bibliographical note

Funding Information:
This study was financially supported by the Creative Materials Discovery Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT (NRF-2018M3D1A1059001), the Materials Innovation Project (NRF-2021M3H4A3026733), the Ministry of Science, ICT, and Future Planning (2022R1A2C4001517), and the BK21 FOUR Program through the NRF funded by the Ministry of Education (4199990514635).

Publisher Copyright:
© 2022 The Authors.


  • All-Inorganic metal halide perovskites
  • CsPbXnanocrystals
  • Perovskite-based photodetectors
  • Photodetectors
  • Surface chemistry

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Engineering (miscellaneous)
  • Materials Science (miscellaneous)


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