Semi-transparent organic/inorganic hybrid photo-detector using pentacene/ZnO diode connected to pentacene transistor

Kwang H. Lee, Chan Ho Park, Kimoon Lee, Taewoo Ha, Jae Hoon Kim, Jungheum Yun, Gun Hwan Lee, Seongil Im

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Semi-transparent organic-inorganic hybrid photo-detector cells were fabricated on glass substrate, composed of pentacene/ZnO photodiodes and pentacene thin-film transistors (TFTs). Semi-transparent NiOx window with a large band gap of ∼4 eV was used as an ohmic electrode on 50 nm-thin pentacene channel in the TFT and simultaneously on the 150 nm-thick pentacene layer, which is deposited on ZnO for p-n diode, to absorb visible and ultraviolet photons from pentacene and ZnO, respectively. Our photo-detector exhibited a minimum temporal response of ∼300 ms for photo-induced output voltage at -1 V input and -3 V supply voltage.

Original languageEnglish
Pages (from-to)1103-1107
Number of pages5
JournalOrganic Electronics
Issue number7
Publication statusPublished - 2011 Jul

Bibliographical note

Funding Information:
The authors acknowledge the financial support from NRF (NRL program: Grant No. 2011-0000375 ), the MKE (IT R&D program: No. 2006-S-079-5), Seoul R&BD Program (ST090839) and Brain Korea 21 program. K.H. Lee would like to thank for the Seoam and Agency of Defense Development (ADD) Fellowships.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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