The study of the photo-response characteristics of organic photosensors integrated with pentacene based thin film transistors

Shin Woo Jeong, Jin Wook Jeong, Seongpil Chang, Tae Yeon Oh, Seung Youl Kang, Kyoung Ik Cho, Byeong Kwon Ju

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We have investigated the photo-response characteristics of organic photosensors (OPS) integrated with pentacene based thin film transistors (TFTs). The fabricated device configuration is PEN/ITO/PEDOT:PSS/(poly(3- hexylethiophene)/phenyl-C61-butryic acid methyl ester) (P3HT/PCBM)/Al and PDMS/Au/(poly-4-vinyphenol) (PVP)/pentacene/Au. In order to study the effect of the applied voltage to the pentacene-TFT on the OPS, each device is connected in series. The response current is tuned dependant on the gate-source voltage and the anode-source voltage. The change of the photo induced ON current in the integrated device is measured under light illuminations ranging from 50 mW/cm 2 to 500 mW/cm 2; the corresponding photo-response (ΔI/I 0) of the devices varied from 0.16 to 1.9. We found that the photo-response characteristic is high at the low anode-source voltage and high gate-source voltage.

Original languageEnglish
Pages (from-to)657-661
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume156
Issue number2
DOIs
Publication statusPublished - 2011 Aug 1

Fingerprint

photosensors
Thin film transistors
transistors
Electric potential
electric potential
thin films
Anodes
anodes
Induced currents
ITO (semiconductors)
esters
Esters
Lighting
illumination
pentacene
acids
Acids
configurations

Keywords

  • Flexible electronics
  • Organic photo sensor
  • Organic thin film transistor
  • P3HT/PCBM
  • Photo-response

ASJC Scopus subject areas

  • Instrumentation
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

The study of the photo-response characteristics of organic photosensors integrated with pentacene based thin film transistors. / Jeong, Shin Woo; Jeong, Jin Wook; Chang, Seongpil; Oh, Tae Yeon; Kang, Seung Youl; Cho, Kyoung Ik; Ju, Byeong Kwon.

In: Sensors and Actuators, B: Chemical, Vol. 156, No. 2, 01.08.2011, p. 657-661.

Research output: Contribution to journalArticle

Jeong, Shin Woo ; Jeong, Jin Wook ; Chang, Seongpil ; Oh, Tae Yeon ; Kang, Seung Youl ; Cho, Kyoung Ik ; Ju, Byeong Kwon. / The study of the photo-response characteristics of organic photosensors integrated with pentacene based thin film transistors. In: Sensors and Actuators, B: Chemical. 2011 ; Vol. 156, No. 2. pp. 657-661.
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