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In this paper, an electron continuity equation with light path folding is developed based on the reflection structure of photoanode in a dye sensitized solar cell (DSC). The characteristics of modulated photocurrent frequency response are calculated, and the effects of light path folding on electron transport property are studied under different absorption and reflection conditions. Intensity modulated photocurrent spectroscopy measurements show that the established model reflectes the actual characteristic of the response to modulated photocurrent frequency when the light path is folded inside the DSC. The kinetic of electron transfer process depends on the light absorption coefficient, film thickness and large particle reflection ability and other factors in DSC with reflector structure. The deep trap is filled and residence time of electron in trap is shortened. It is attributed to the fact that the light path folding reduces the effect of trap/detrap and accelerates the electron transportation.
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Keywords:
- dye sensitized /
- solar cell /
- light path folding /
- electron transport
[1] Oregan B, Gratzel M 1991 Nature 353 737
[2] Bala H, Shi L, Jiang L, Guo J Y, Yuan G Y, Wang L B, Liu Z R 2011 Acta Phys. Sin. 60 088101 (in Chinese) [哈日巴拉, 师兰, 姜磊, 郭金毓, 袁光瑜, 王李波, 刘宗瑞 2011 物理学报 60 088101]
[3] Yella A, Lee H W, Tsao H N, Yi C Y, Chandiran A K, Nazeeruddin M K, Diau E W G, Yeh C Y, Zakeeruddin S M, Gratzel M 2011 Science 334 629
[4] Hore S, Vetter C, Kern R, Smit H, Hinsch A 2006 Sol. Energy Mater. Sol. Cells 90 1176
[5] Hu L H, Dai S Y, Weng J, Xiao S F, Sui Y F, Huang Y, Chen S H, Kong F T, Pan X, Liang L Y, Wang K J 2007 J. Phys. Chem. B 111 358
[6] Dloczik L, Ileperuma O, Lauermann I, Peter L M, Ponomarev E A, Redmond G, Shaw N J, Uhlendorf I 1997 J. Phys. Chem. B 101 10281
[7] 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, 姜年全, 戴松元 2010 物理学报 59 5141]
[8] Oekermann T, Zhang D, Yoshida T, Minoura H 2004 J. Phys. Chem. B 108 2227
[9] Bisquert J 2002 J. Phys. Chem. B 106 325
[10] Fisher A C, Peter L M, Ponomarev E A, Walker A B, Wijayantha K G U 2000 J. Phys. Chem. B 104 949
[11] Bisquert J, Vikhrenko V S 2004 J. Phys. Chem. B 108 2313
[12] Peter L M, Wijayantha K G U 2000 Electrochim. Acta 45 4543
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[1] Oregan B, Gratzel M 1991 Nature 353 737
[2] Bala H, Shi L, Jiang L, Guo J Y, Yuan G Y, Wang L B, Liu Z R 2011 Acta Phys. Sin. 60 088101 (in Chinese) [哈日巴拉, 师兰, 姜磊, 郭金毓, 袁光瑜, 王李波, 刘宗瑞 2011 物理学报 60 088101]
[3] Yella A, Lee H W, Tsao H N, Yi C Y, Chandiran A K, Nazeeruddin M K, Diau E W G, Yeh C Y, Zakeeruddin S M, Gratzel M 2011 Science 334 629
[4] Hore S, Vetter C, Kern R, Smit H, Hinsch A 2006 Sol. Energy Mater. Sol. Cells 90 1176
[5] Hu L H, Dai S Y, Weng J, Xiao S F, Sui Y F, Huang Y, Chen S H, Kong F T, Pan X, Liang L Y, Wang K J 2007 J. Phys. Chem. B 111 358
[6] Dloczik L, Ileperuma O, Lauermann I, Peter L M, Ponomarev E A, Redmond G, Shaw N J, Uhlendorf I 1997 J. Phys. Chem. B 101 10281
[7] 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, 姜年全, 戴松元 2010 物理学报 59 5141]
[8] Oekermann T, Zhang D, Yoshida T, Minoura H 2004 J. Phys. Chem. B 108 2227
[9] Bisquert J 2002 J. Phys. Chem. B 106 325
[10] Fisher A C, Peter L M, Ponomarev E A, Walker A B, Wijayantha K G U 2000 J. Phys. Chem. B 104 949
[11] Bisquert J, Vikhrenko V S 2004 J. Phys. Chem. B 108 2313
[12] Peter L M, Wijayantha K G U 2000 Electrochim. Acta 45 4543
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