Electrically Switchable Color-Selective Organic Photodetectors for Full-Color Imaging

Zhaojue Lan, Furong Zhu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The present full-color imaging techniques rely on the use of broadband inorganic photodetectors with dedicated color filters, which is one of the practical challenges for large-area, flexible, and high-solution imaging applications. The development of high-performance color-selective photodetectors is one of the key solutions to overcome this challenge. In this work, an electrically switchable color-selective organic photodetector (OPD) comprising a double organic bulk heterojunction structure has been developed for full-color imaging. The color-selective sensing capability over the visible spectrum ranges can be realized by controlling the bias across the OPD, achieving a high responsivity of ∼200 mA/W, a large linear dynamic range of 122 dB, a viewing angle of 120°, and a -3 dB cutoff frequency of >50 kHz. A full-color imaging function has been demonstrated using electrically switchable red-, green-, and blue-color selective OPD sensors with an excellent operational stability. The results of this work provide a practical solution for applications in high-resolution full-color imaging and artificial vision.

Original languageEnglish
Pages (from-to)13674-13682
Number of pages9
JournalACS Nano
Volume15
Issue number8
Early online date28 Jul 2021
DOIs
Publication statusPublished - 24 Aug 2021

Scopus Subject Areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

User-Defined Keywords

  • color-selective
  • electrically switchable
  • full-color imaging
  • image sensor
  • organic photodetector

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