Preparation of FTO-free and Coal Based Carbon Counter Electrodes for Dye Sensitized Solar Cells

doi:10.3724/SP.J.1077.2013.12237

Abstract

Abstract: The coal-based carbon counter electrodes (CEs) with low-cost and high-performance were prepared from different coal powders such as gas coal, coking coal and lean coal, and they were used to substitute both conductive glass substrate and catalyst layer. The effects of impregnation and surface modification of the coal-based carbon CEs on their structure and photovoltaic performance were investigated. XRD, SEM and electrochemical impedance spectroscope were used to character the structure and performance of coal based carbon CEs. Results show that the coal based carbon CE after impregnated is the integrative CE with porous top surface and dense bottom. The solar cell with coal based carbon CE with surface modified demonstrates high photovoltaic performance with open circuit photo-voltage (V_oc) of 0.79 V, short circuit photocurrent density (J_sc) of 13.48 mA/cm², fill factor (FF) of 0.67, and solar-to-electricity conversion efficiency (η) of 7.16%, which is 30% higher than that of the cell with graphite electrode, and comparable to that of the cell with Pt electrode. The results indicate that the as-prepared coal based carbon CE is a promising CE candidate for substitute conventional?Pt/FTO counter electrode.

Key words: coal based carbon, counter electrode, integration, dye sensitized solar cell

CLC Number:

MENG Fan-Ning, WANG Chun-Lei, WU Ming-Xing, LIN Xiao, WANG Tong-Hua, MA Ting-Li. Preparation of FTO-free and Coal Based Carbon Counter Electrodes for Dye Sensitized Solar Cells[J]. Journal of Inorganic Materials, 2013, 28(3): 273-277.

References

[1] Peng S J, Cheng F Y, Shi J F, et al. High-surface-area microporous carbon as the efficiency photocathode of dye-sensitized solar cells. Solid State Sciences, 2009, 11(12): 2051–2055.

[2] Wang G Q, Huang C C, Xing W, et al. Micro-meso hierarchical porous carbon as low-cost counter electrode for dye-sensitized solar cells. Electrochimica Acta, 2011, 56(16): 5459–5463.

[3] Wu M X, Lin X, Wang T H, et al. Low-cost dye-sensitized solar cell based on nine kinds of carbon counter elecrodes. RSC Energy & Environmental Science, 2011, 4(6): 2308–2315.

[4] Wu M X, Zhang Q Y, Xiao J Q, et al. A novel catalyst of WO2 nanorod for the counter electrode of dye-sensitized solar cells. RSC Chemical Communications, 2011, 47(15): 4535–4537.

[5] 黄振, 碳材料在纳米晶染料敏化太阳能电池对电极研究中的应用. 吉林: 吉林大学硕士论文, 2007.

[6] Li Pu, Hu Zhi-Qiang, Su Yan, et al. Preparation of flexible carbon ccounter electrodes for dye sensitized solar cells via screen printing method. Journal of Dalian University of Technology, 2009, 28(4): 274–276.

[7] Huang Z, Liu X Z, Li K X, et al. Application of carbon materials as counter electrodes of dye-sensitized solar cells. Electrochemistry Communications, 2007, 9(4): 596–598.

[8] Lee W J, Ramasamy E, Lee D Y, et al. Performance variation of carbon counter electrode based dye-sensitized solar cell. Solar Energy Materials and Solar Cells, 2008, 92(7): 814–818.

[9] 姜奇伟. 染料敏化太阳能电池石墨对电极和电解质研究. 福建: 华侨大学硕士论文, 2007.

[10] Chen J K, Li K X, Luo Y H, et al. A flexible carbon counter electrode for dye-sensitized solar cells. Carbon, 2009, 47(11): 2704–2708.

[11] Yen M Y, Yen C Y, Liao S H, et al. A novel carbon-based nanocomposite plate as a counter electrode for dye-sensitized solar cells. Composites Science and Technology, 2009, 69(13): 2193–2197.

[12] Lee W J, Ramasamy E, Lee D Y, et al. Efficient dye-sensitized solar cells with catalytic multiwall carbon nanotube counter electrodes. ACS Applied Materials & Interfaces, 2009, 1(6): 1145–1149.

[13] Ramasamy E, Chun J Y, Lee J W, et al. Soft-template synthesized ordered mesoporous carbon counter electrodes for dye-sensitized solar cells. Carbon, 2010, 48(15): 4563–4565.

[14] XIA Xiao-Hong, LIU Hong-Bo, HUANG Yan-Rui, et al. Preparation of porous carbon by polymer blending of phenolic resin and adipic diacid. Journal of Inorganic Materials, 2011, 26(8): 857–862.

[15] WANG Gui-Qiang, HUANG Cong-Cong, XING Wei, et al. Preparation and property of hierarchical porous carbon counter electrode for dye-sensitized solar cells. Journal of Inorganic Materials, 2011, 26(11): 1136–1140.

[16] ZHOU Ying, WANG Zhi-Chao, WANG Chun-Lei, et al. Synthesis and properties of hierarchical macro-mesoporous carbon materials. Journal of Inorganic Materials, 2011, 26(2): 145–148.