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

doi:10.1063/1.2168493

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

65 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 language	English
Article number	043508
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	88
Issue number	4
DOIs	https://doi.org/10.1063/1.2168493
Publication status	Published - 2006

Bibliographical note

Funding Information:
The authors are very appreciative of the financial support from KISTEP (Program No. M1-0214-00-0228) and KRF (Program No. C00047), and they also acknowledge the support from Brain Korea 21 Program. One of the authors (J. H. K.) acknowledges financial support from Yonsei University Research (Fund No. 1999-1-0029) and eSSC at Postech funded by MOST through KOSEF.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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title = "Comparative study of the photoresponse from tetracene-based and pentacene-based thin-film transistors",

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.",

author = "Choi, {Jeong M.} and Jiyoul Lee and Hwang, {D. K.} and Kim, {Jae Hoon} and Seongil Im and Eugene Kim",

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doi = "10.1063/1.2168493",

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AU - Lee, Jiyoul

AU - Hwang, D. K.

AU - Kim, Jae Hoon

AU - Im, Seongil

AU - Kim, Eugene

N1 - Funding Information: The authors are very appreciative of the financial support from KISTEP (Program No. M1-0214-00-0228) and KRF (Program No. C00047), and they also acknowledge the support from Brain Korea 21 Program. One of the authors (J. H. K.) acknowledges financial support from Yonsei University Research (Fund No. 1999-1-0029) and eSSC at Postech funded by MOST through KOSEF.

PY - 2006

Y1 - 2006

N2 - 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

Abstract

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