Thickness dependence of surface morphology and charge carrier mobility in organic field-effect transistors

doi:10.1088/1674-1056/19/1/018103

Abstract With the aim of understanding the relationships between organic small molecule field-effect transistors (FETs) and organic conjugated polymer FETs, we investigate the thickness dependence of surface morphology and charge carrier mobility in pentacene and regioregular poly (3-hexylthiophene) (RR-P3HT) field-effect transistors. On the basis of the results of surface morphologies and electrical properties, we presume that the charge carrier mobility is largely related to the morphology of the organic active layer. We observe that the change trends of the surface morphologies (average size and average roughness) of pentacene and RR-P3HT thin films are mutually opposite, as the thickness of the organic layer increases. Further, we demonstrate that the change trends of the field-effect mobilities of pentacene and RR-P3HT FETs are also opposite to each other, as the thickness of the organic layer increases within its limit.

Keywords: organic field-effect transistors morphology thickness dependence field-effect mobility

Received: 03 April 2009
Revised: 16 July 2009
Accepted manuscript online:

PACS:	85.30.Tv	(Field effect devices)
	68.35.B-	(Structure of clean surfaces (and surface reconstruction))
	68.55.-a	(Thin film structure and morphology)
	73.50.Dn	(Low-field transport and mobility; piezoresistance)
	73.61.Ph	(Polymers; organic compounds)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10774013 and 10804006), the National High Technology Research and Development Program of China (Grant No. 2006AA03Z412), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070004024), the Research Fund for the Youth Scholars of the Doctoral Program of Higher Education, China (Grant No. 20070004031), the New Star Plan of Science and Technology of Beijing, China (Grant No. 2007A024) and the research grants from the Academy of Sciences for the Developing World (Grant No. B08002).

Cite this article:

Tian Xue-Yan(田雪雁), Xu Zheng(徐征), Zhao Su-Ling(赵谡玲), Zhang Fu-Jun(张福俊), Yuan Guang-Cai(袁广才),Li Jing(李婧), Sun Qin-Jun(孙钦军),Wang Yun(王赟), and Xu Xu-Rong(徐叙瑢) Thickness dependence of surface morphology and charge carrier mobility in organic field-effect transistors 2010 Chin. Phys. B 19 018103

[1]	Jaiswal M and Menon R 2006 Polym. Int. 55 1371
[2]	Dimitrakopoulos C D and Malenfant P R L 2002 Adv. Mater. 14 99
[3]	Sirringhaus H, Tessler N and Friend R H 1998 Science 280 1741
[4]	Sirringhaus H, Brown P J, Friend R H, Nielsen M M, Bechgaard K, Langeveld-Voss B M W, Spiering A J H, Janssen R A J, Meijer E W, Herwig P and de Leeuw
	D M 1999 Nature (London) 401 685
[5]	Yuan G C, Xu Z, Zhao S L, Zhang F J, Jiang W W, Song D D, Zhu H N, Li S Y, Huang J Y, Huang H and Xu X R 2008 Chin. Phys. B 17 1887
[6]	Kim D H, Park Y D, Jang Y, Yang H, Kim Y H, Han J I, Moon D G, Park S, Chang T, Chang C, Joo M and Ryu C Y 2005 Adv. Funct. Mater. 15 77
[7]	Sirringhaus H, Tessler N and Friend R H 1999 Synth. Met. 102 857
[8]	Zen A, Plaum J, Hirschmann S, Zhuang W, Jaiser F, Asawapiron U, Rabe J P, Scherf U and Necher D 2004 Adv. Funct. Mater. 14 757
[9]	Joshi S, Grigorian S, Pietsch U, Pingel P, Zen A, Neher D and Scherf U 2008 Macromolecules 41 6800
[10]	Cho S, Lee K, Yuen J, Wang G, Moses D, Heeger A J, Surin M and Lazzaroni R 2006 Appl. Phys. 100 114503
[11]	Kline J R, Mcgehee M D and Toney M F 2006 Nature (London) 5 222
[12]	Mcculloch I, Heeney M, Bailey C, Genevicius K, Macdonald I, Shkunov M, Sprarrowe D, Wagnger R, Zhang W, Chabinyc M, Kline R J, Mcgehee M D and Toney M
	F 2006 Nature (London) 5 328
[13]	Yuan G C, Xu Z, Zhao S L, Zhang F J, Huang J Z, Huang J Y, Tian X Y and Xu X R 2008 Chin. Phys. B 17 3822
[14]	Kang S J, Noh M, Park D S, Kim H J and Wang C N J 2004 Appl. Phys. 95 2293
[15]	Wang G, Hirasa T, Moses D and Heeger A J 2004 Synth. Met. 146 127
[16]	Sethuraman K, Ochiai S, Kojima K and Mizutani T 2008 Appl. Phys. Lett. 92 183302
[17]	Singh T B and Sariciftci N S 2006 Annu. Rev. Mater. Res. 36 199
[18]	Dimitrakopoulos C D and Mascaro D J 2001 IBM J. Res. & Dev. 45 11
[19]	Tao C L, Zhang X H, Dong M J, Liu Y Y, Sun Shuo, Ou G P, Zhang F J and Zhang H L 2008 Chin. Phys. B 17 0281

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Thickness dependence of surface morphology and charge carrier mobility in organic field-effect transistors

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