Comparative study of the photoresponse from tetracene-based and pentacene-based thin-film transistors

Jeong M. Choi, Jiyoul Lee, D. K. Hwang, Jae Hoon Kim, Seongil Im, Eugene Kim

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

We report on the photoresponse from tetracene-based and pentacene-based thin-film transistors (TFTs) with semitransparent Ni Ox source/drain electrodes and Si O2 p+ -Si substrate. Both organic TFTs have been fabricated with identical channel thickness and device geometry. Compared with pentacene-based TFTs, the tetracene-TFT exhibited superior potentials as a photodetector in the visible and ultraviolet range although it showed a field mobility (μ=0.003 cm2 V s) which is two orders of magnitude lower than that of the pentacene-based TFT (μ=∼0.3 cm2 V s). The tetracene-TFT displayed a high photo-to-dark current ratio (Iph Idark) of 3× 103, while that of the pentacene-TFT was only ∼10.

Original languageEnglish
Article number043508
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume88
Issue number4
DOIs
Publication statusPublished - 2006 Feb 6

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transistors
thin films
dark current
photometers
electrodes
geometry

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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abstract = "We report on the photoresponse from tetracene-based and pentacene-based thin-film transistors (TFTs) with semitransparent Ni Ox source/drain electrodes and Si O2 p+ -Si substrate. Both organic TFTs have been fabricated with identical channel thickness and device geometry. Compared with pentacene-based TFTs, the tetracene-TFT exhibited superior potentials as a photodetector in the visible and ultraviolet range although it showed a field mobility (μ=0.003 cm2 V s) which is two orders of magnitude lower than that of the pentacene-based TFT (μ=∼0.3 cm2 V s). The tetracene-TFT displayed a high photo-to-dark current ratio (Iph Idark) of 3× 103, while that of the pentacene-TFT was only ∼10.",
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Comparative study of the photoresponse from tetracene-based and pentacene-based thin-film transistors. / Choi, Jeong M.; Lee, Jiyoul; Hwang, D. K.; Kim, Jae Hoon; Im, Seongil; Kim, Eugene.

In: Applied Physics Letters, Vol. 88, No. 4, 043508, 06.02.2006, p. 1-3.

Research output: Contribution to journalArticle

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