Organic ultraviolet photodetector based on phosphorescent material

  • Lingliang Li
  • , Fujun Zhang*
  • , Qiaoshi An
  • , Zixuan Wang
  • , Jian Wang
  • , Aiwei Tang
  • , Hongshang Peng
  • , Zheng Xu
  • , Yongsheng Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A new type of organic visible-blind UV-PDs is demonstrated by utilizing phosphorescent material Ir(III)bis[(4,6-difluorophenyl)-pyridinato-N, C20 ] picolinate (FIrpic) as the electron donor and [6,6]-phenyl-C-61- butyricacidmethylester (PCBM) as the electron accepter, respectively. The peak responsivity of the organic UV-PDs is as high as 140 mA/W, corresponding to an external quantum efficiency of about 48%, under 365 nm UV light with an intensity of 0.018 mW/cm2. The distinct photoluminescence quenching of FIrpic is obtained by doping PCBM. The organic UV-PDs provide visible-blind performance with the strong photocurrent response in the UV-A region, the rise and fall times of less than one second, and linear response within the incident light-intensity range from 0.018 to 20 mW/cm2.

Original languageEnglish
Pages (from-to)3823-3826
Number of pages4
JournalOptics Letters
Volume38
Issue number19
DOIs
Publication statusPublished - 1 Oct 2013
Externally publishedYes

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