Preparation of lamina-shape TiO2 nanoarray electrode and its electron transport in dye-sensitized solar cells

Hari Bala; Shi Lan; Jiang Lei; Guo Jin-Yu; Yuan Guang-Yu; Wang Li-Bo; Liu Zong-Rui

doi:10.7498/aps.60.088101

Abstract

Lamina-shape TiO2 nanoarrays (LTNA) film electrode which is vertically grown on the surface of a Ti sheet by the means of hydrogen peroxide oriented etching at low temperature. X-ray diffraction shows that amorphous phase transforms to highly-crystalline anatase phase of the LTNA film after having been calcined at 500 ℃ for 1 h. Field emission scanning electron microscope exhibits a vertically oriented lamina-shape array with the morphology uniformly distributed and perfectly coated on the surface of Ti sheet, and the average height (film thickness), width and thickness of the leave are 1.35 m, 3080 nm and 1015 nm respectively, after 1 d etching in hydrogen peroxide at 80 ℃. The LTNA electrodes exhibit similar morphologies except for the film with a thickness of 2.12 m by hydrogen peroxide etching for 2 d. Using the LTNA film electrode as photoanode based on dye C106 fabricate back-illumination type dye-sensitized solar cell (DSC), a power conversion efficiency can reach 3.2% under an irradiation of air mass 1.5 global (100 mWcm-2) simulated sunlight. Mesoporous TiO2 films are also used in the fabrication of DSC under similar conditions. The devices are compared with each other by transient photoelectric attenuation and electrical impedance technique. The results demonstrate that the LTNA-electrode DSC has a much lower recombination rate and a longer electron life time.

Keywords:

Authors and contacts

1.
College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043, China;
2.
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China

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Cited By

[1]	ORegan B, Grtzel M 1991 Nature 353 737
[2]	Grtzel M 2001 Nature 414 338
[3]
[4]	Han L, Fukui A, Chiba Y, Islam A, Komiya R, Fuke N, Koide N, Yamanaka R, Shimizu M 2009 Appl. Phys. Lett. 94 013305
[5]
[6]	Zhang G L, Hari B, Cheng Y M, Shi D, L X J, Yu Q J, Wang P 2009 Chem. Commun. 2198
[7]
[8]	Liu W Q, Kou D X, Hu L H, Huang Y, Jiang N Q, Dai S Y 2010 Acta Phys. Sin. 59 5141 (in Chinese) [刘伟庆、寇东星、胡林华、黄阳、姜年权、戴松元 2010 59 5141]
[9]
[10]
[11]	Nazeeruddin M, Angelis F, Fantacci S, Selloni A, Viscardi G, Liska P, Ito S, Takeru B, Grtzel M 2005 J. Am. Chem. Soc. 127 16835
[12]	Chiba Y, Islam A, Watanabe Y, Komiya R, Koide N, Han L 2006 Jpn. J. Appl. Phys. 45 L638
[13]
[14]	Gao F, Wang Y, Shi D, Zhang J, Wang M, Jing X, Humphry-Baker R, Wang P, Zakeeruddin S, Grtzel M 2008 J. Am. Chem. Soc. 130 10720
[15]
[16]
[17]	Hu L H, Dai S Y, Wang K J 2005 Acta Phys. Sin. 54 1914 (in Chinese) [胡林华、戴松元、王孔嘉 2005 54 1914]
[18]
[19]	Li Z H, Wang D J, Wang P, Lin Y H, Zhang Q L, Yang M 2005 Chem. Phys. Lett. 411 511
[20]
[21]	Liang L Y, Dai S Y, Hu L H, Dai J, Liu W Q 2009 Acta Phys. Sin. 58 1338 (in Chinese) [梁林云、戴松元、胡林华、戴俊、刘伟庆 2009 58 1338]
[22]
[23]	Liang L Y, Dai S Y, Fang X Q, Hu L H 2008 Acta Phys. Sin. 57 1956 (in Chinese) [梁林云、戴松元、方霞琴、胡林华 2008 57 1956]
[24]
[25]	Hong X, Du L, Ye M, Weng Y 2004 Chin. Phys. 13 720
[26]
[27]	Sommeling P, Oregan B, Haswell R, Smit H, Bakker N, Smits J, Kroon J, Roosmalen J 2006 J. Phys. Chem. B 110 19191
[28]
[29]	Xu W W, Dai S Y, Fang X Q, Hu L H, Kong F T, Pan X, Wang K J 2005 Acta Phys. Sin. 54 5943 (in Chinese) [徐炜炜、戴松元、方霞琴、胡林华、孔凡太、潘旭、王孔嘉 2005 54 5943]
[30]
[31]	Dai J, Hu L H, Liu W Q, Dai S Y 2008 Acta Phys. Sin. 57 5310 (in Chinese) [戴俊、胡林华、刘伟庆、戴松元 2008 57 5310]
[32]
[33]	Mor G, Shankar K, Paulose M, Varghese O, Grimes C 2006 Nano Lett. 6 215
[34]	Xiong B, Zhou B, Bai J, Zheng Q, Liu Y, Cai W, Cai J 2008 Chin. Phys. B 17 3713
[35]
[36]	Guo L, Liang L Y, Chen C, Wang M T, Kong M G, Wang K J 2007 Acta Phys. Sin. 56 4270 (in Chinese) [郭力、梁林云、陈冲、王命泰、孔明光、王孔嘉 2007 56 4270]
[37]
[38]	Zhang Y, Zhao Y, Cai N, Xiong S Z 2008 Acta Phys. Sin. 57 5806 (in Chinese) [张苑、赵颖、蔡宁、熊绍珍 2008 57 5806]
[39]
[40]	Feng X, Shankar K, Varghese O, Paulose M, Latempa T, Grimes C 2008 Nano Lett. 8 3781
[41]
[42]	Park J, Lee T, Kang M 2008 Chem. Commun. 2867
[43]
[44]
[45]	Bang J, Kamat P 2010 Adv. Funct. Mater. 20 1970
[46]	Gong D, Grimes C, Varghese O, Hu W, Singh R, Chen Z, Dickey E 2001 J. Mater. Res. 16 3331
[47]
[48]	Mor G, Varghese O, Paulose M, Shankar K, Grimes C 2006 Sol. Energy Mater. Sol. Cells 90 2011
[49]
[50]	Liu B, Aydil E 2009 J. Am. Chem. Soc. 131 3985
[51]
[52]	Wu J, Zhang T, Zeng Y, Hayakawa S, Tsuru K, Osaka A 2005 Langmuir 21 6995
[53]
[54]
[55]	Cao Y, Bai Y, Yu Q, Cheng Y, Liu S, Shi D, Gao F, Wang P 2009 J. Phys. Chem. C 113 6290
[56]
[57]	ORegan B, Durrant J, Sommeling P, Bakker N 2007 J. Phys. Chem. C 111 14001
[58]
[59]	Wang P, Zakeeruddin S, Comte P, Charvet R, Humphry-Baker R, Grtzel M 2003 J. Phys. Chem. B 107 14336

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Vol. 60, Issue 8 - 2011-04-20

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