Preparation and Electronic Defect Characteristics of Pentacene Organic Field Effect Transistors

Yong Suk Yang; Taehyoung Zyung

Macromolecular Research, Vol.10, No.2, 75-79, April, 2002

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Preparation and Electronic Defect Characteristics of Pentacene Organic Field Effect Transistors

Yong Suk Yang^†, and Taehyoung Zyung

Electronics and Telecommunications Research Institute, Yusong, Taejon 305-350, Korea

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Organic materials have considerable attention as active semiconductors for device applications such as thin-film transistors (TFTs) and diodes. Pentacene is a p-type organic semiconducting material investigated for TFTs. In this paper, we reported the morphological and electrical characteristics of pentacene TFT films. The pentacene transistors showed the mobility of 0.8 cm(2)/Vs and the grains larger than 1 μm. Deep-level transient spectroscopy (DLTS) measurements were carried out on metal/insulator/organic semiconductor structure devices that had a depletion region at the insulator/organic-semiconductor interface. The duration of the capacitance transient in DLTS signals was several ten of seconds in the pentacene, which was longer than that of inorganic semiconductors such as Si. Based on the DLTS characteristics, the energy levels of hole and electron traps for the pentacene films were approximately 0.24, 1.08, and 0.31 eV above Ev, and 0.69 eV below Ec.

Keywords:pentacene;organic transistor;DLTS;mobility;defect

[References]

Friend RH, Phys. Scripta., T66, 9 (1996)
Lin YY, Gundlach DJ, Nelson SF, Jackson TN, IEEE Trans. Electron Devices, 44, 1325 (1997)
Dimitrakopoulos CD, Purushothaman S, Kymissis J, Callegari A, Shaw JM, Science, 283(5403), 822 (1999)
Schon JH, Batlogg B, Appl. Phys. Lett., 74, 260 (1999)
Kim HS, Noh SH, Tsutsui T, Korea Polym. J., 7(1), 18 (1999)
Shim HK, Ahn T, Lee HY, Lee JI, Korea Polym. J., 9(2), 116 (2001)
Schon JH, Batlogg B, J. Appl. Phys., 89, 336 (2001)
Yamasaki K, Yoshida M, Sugang T, Jpn. J. Appl. Phys., 18, 113 (1979)
Lin YY, Gundlach DJ, Nelson SF, Jackson TN, IEEE Trans. Electron Devices Lett., 18, 606 (1997)
Matters M, de Leeuw DM, Vissenberg MJCM, Hart CM, Herwig PT, Geuns T, Mutsaers CMJ, Drury CJ, Opt. Mater., 12, 189 (1999)
Laquindanum JG, Katz HE, Lovinger AJ, Dodabalapur A, Chem. Mater., 8, 2542 (1996)
Lang DV, J. Appl. Phys., 45, 3023 (1974)
Shockley W, Read WT, Phys. Rev., 87, 835 (1952)
Campbell AJ, Bradley DDC, Werner E, Brutting W, Synth. Met., 111-112, 273 (2000)
Yamasaki K, Yoshida M, Sugano T, Jpn. J. Appl. Phys., 18, 113 (1979)
Vannikov AV, Boguslavski LI, Margulis VB, Fiz. Tekh. Poluprovodnikov, 1, 935 (1967)
Karl N, Festkorper Probleme, 14, 261 (1974)
Pope M, Swenberg CE, Electronic Processes in Organic Crystals and Polymers, Oxford, New York, pp. 192 (1999)
Wen TC, Tiao CJ, Hwang LC, Tsai CY, Synth. Met., 92, 235 (1998)

[Referenced By]

[1] Friend RH, Phys. Scripta., T66, 9 (1996)

[2] Lin YY, Gundlach DJ, Nelson SF, Jackson TN, IEEE Trans. Electron Devices, 44, 1325 (1997)

[3] Dimitrakopoulos CD, Purushothaman S, Kymissis J, Callegari A, Shaw JM, Science, 283(5403), 822 (1999)

[4] Schon JH, Batlogg B, Appl. Phys. Lett., 74, 260 (1999)

[5] Kim HS, Noh SH, Tsutsui T, Korea Polym. J., 7(1), 18 (1999)

[6] Shim HK, Ahn T, Lee HY, Lee JI, Korea Polym. J., 9(2), 116 (2001)

[7] Schon JH, Batlogg B, J. Appl. Phys., 89, 336 (2001)

[8] Yamasaki K, Yoshida M, Sugang T, Jpn. J. Appl. Phys., 18, 113 (1979)

[9] Lin YY, Gundlach DJ, Nelson SF, Jackson TN, IEEE Trans. Electron Devices Lett., 18, 606 (1997)

[10] Matters M, de Leeuw DM, Vissenberg MJCM, Hart CM, Herwig PT, Geuns T, Mutsaers CMJ, Drury CJ, Opt. Mater., 12, 189 (1999)

[11] Laquindanum JG, Katz HE, Lovinger AJ, Dodabalapur A, Chem. Mater., 8, 2542 (1996)

[12] Lang DV, J. Appl. Phys., 45, 3023 (1974)

[13] Shockley W, Read WT, Phys. Rev., 87, 835 (1952)

[14] Campbell AJ, Bradley DDC, Werner E, Brutting W, Synth. Met., 111-112, 273 (2000)

[15] Yamasaki K, Yoshida M, Sugano T, Jpn. J. Appl. Phys., 18, 113 (1979)

[16] Vannikov AV, Boguslavski LI, Margulis VB, Fiz. Tekh. Poluprovodnikov, 1, 935 (1967)

[17] Karl N, Festkorper Probleme, 14, 261 (1974)

[18] Pope M, Swenberg CE, Electronic Processes in Organic Crystals and Polymers, Oxford, New York, pp. 192 (1999)

[19] Wen TC, Tiao CJ, Hwang LC, Tsai CY, Synth. Met., 92, 235 (1998)