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采用强度调制光电流谱(IMPS)和强度调制光电压谱(IMVS)技术,从染料敏化太阳电池(DSC)电子传输和复合角度对比了不同光强下导电玻璃表面阻挡层及TiO2薄膜优化使电池性能改善的内在原因.阻挡层的引入和TiO2薄膜的优化均通过电沉积法实现.结果表明,对多孔薄膜电极的不同改性均提高了电池的短路电流Jsc和效率η,但对电子传输和复合过程的作用机理有所不同:前者延长了电子寿命τ n,但电子传输时间τ d变化不明显;而后者则主要是延长τ n的同时也缩短了τ d.
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关键词:
- 染料敏化 /
- 太阳电池 /
- 调制光电流谱/调制光电压谱 /
- 电子输运
IMPS(intensity-modulated photocurrent spectroscopy) and IMVS(intensity–modulated photovoltage spectroscopy) measurements are utilized to analyse different mechanisms for enhancing the performance of dye-sensitized solar cells(DSC) based on modified anode. Electron transport and back reaction in DSC are investigated under different illumination intensities. The modifications of anode, blocking layer and modified TiO2films, are performed by electrodeposition. It is found that short-current density Jsc and efficiency η of DSC are improved, but different mechanisms are obtained: the optimization of TCO by coating a blocking layer can effectively extend electron lifetime τ n, but it has little influence on electron transport. On the other hand, the optimization of TiO2 film can enhance electron transport, finally shorten transit time τ d and extend τ n.-
Keywords:
- dye-sensitized /
- solar cells /
- IMPS/IMVS /
- electron transport
[1] Oregan B, Graetzel M 1991 Nature 353 737
[2] You H L, Zhang C F 2009 Chin. Phys. B 18 349
[3] 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 物理学报 58 1338]
[4] Dai J, Hu L H, Lin 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 物理学报 57 5310]
[5] Chen C Y, Wang M K, Li J Y, Pootrakulchote N, Alibabaei L, Ngoc-le C H, Tsai J H, Graetzel C, Wu C G, Zakeeruddin S M, Graetzel M 2009 ACS Nano 3 3103
[6] Frank A J, Kopidakis N, van de Lagemaat J 2004 Coord. Chem. Rev. 248 1165
[7] Gregg B A 2004 Coord. Chem. Rev. 248 1215
[8] Xiong B T, Zhou B X, Bai J, Zheng Q, Liu Y B, Cai W M, Cai J 2008 Chin. Phys. B 17 3713
[9] Hagfeldt A, Graetzel M 1995 Chem. Rev. 95 49
[10] Zhu K, Schiff E A, Park N G, van de Lagemaat J, Frank A J 2002 Appl. Phys. Lett. 80 685
[11] Cameron P J, Peter L M 2003 J. Phys. Chem. B 107 14394
[12] Chen Y, Chen W, Guo F, Li M Y, Liu W, Zhao X Z 2009 Chin. Phys. B 18 3922
[13] Nazeeruddin M K, Kay A, Rodicio I, Humphrybaker R, Muller E, Liska P, Vlachopoulos N, Graetzel M 1993 J. Am. Chem. Soc. 115 6382
[14] Hao S C, Wu J H, Fan L Q, Huang Y F, Lin H M, Wei Y L 2004 Sol. Energy 76 745
[15] Hart J N, Menzies D, Cheng Y B, Simon G P, Spiccia L 2006 C. R. Chimie 9 622
[16] 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 物理学报 54 5943]
[17] Yang S M, Huang Y Y, Huang C H, Zhao X S 2002 Chem. Mater. 14 1500
[18] Yang S M, Li F Y, Huang C H 2003 Sci. China B 33 59 (in Chinese) [杨术明、 李福友、 黄春辉 2003 中国科学B 33 59]
[19] Kay A, Graetzel M 2002 Chem. Mater. 14 2930
[20] Lenzmann F, Krueger J, Burnside S, Brooks K, Graetzel M, Gal D, Ruhle S, Cahen D 2001 J. Phys. Chem. B 105 6347
[21] 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
[22] Schlichthorl G,Huang S Y, Sprague J, Frank A J 1997 J. Phys. Chem. B 101 8141
[23] Schlichthorl G, Park N G, Frank A J 1999 J. Phys. Chem. B 103 782
[24] Stathatos E, Lianos R, Zakeeruddin S M, Liska P, Graetzel M 2003 Chem. Mater. 15 1825
[25] Hu L H, Dai S Y, Wang K J 2003 Acta Phys. Sin. 52 2135 (in Chinese) [胡林华、 戴松元、 王孔嘉 2003 物理学报 52 2135]
[26] Schlichthorl G, Park N G, Frank A J 1999 J. Phys. Chem. B 103 782
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[1] Oregan B, Graetzel M 1991 Nature 353 737
[2] You H L, Zhang C F 2009 Chin. Phys. B 18 349
[3] 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 物理学报 58 1338]
[4] Dai J, Hu L H, Lin 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 物理学报 57 5310]
[5] Chen C Y, Wang M K, Li J Y, Pootrakulchote N, Alibabaei L, Ngoc-le C H, Tsai J H, Graetzel C, Wu C G, Zakeeruddin S M, Graetzel M 2009 ACS Nano 3 3103
[6] Frank A J, Kopidakis N, van de Lagemaat J 2004 Coord. Chem. Rev. 248 1165
[7] Gregg B A 2004 Coord. Chem. Rev. 248 1215
[8] Xiong B T, Zhou B X, Bai J, Zheng Q, Liu Y B, Cai W M, Cai J 2008 Chin. Phys. B 17 3713
[9] Hagfeldt A, Graetzel M 1995 Chem. Rev. 95 49
[10] Zhu K, Schiff E A, Park N G, van de Lagemaat J, Frank A J 2002 Appl. Phys. Lett. 80 685
[11] Cameron P J, Peter L M 2003 J. Phys. Chem. B 107 14394
[12] Chen Y, Chen W, Guo F, Li M Y, Liu W, Zhao X Z 2009 Chin. Phys. B 18 3922
[13] Nazeeruddin M K, Kay A, Rodicio I, Humphrybaker R, Muller E, Liska P, Vlachopoulos N, Graetzel M 1993 J. Am. Chem. Soc. 115 6382
[14] Hao S C, Wu J H, Fan L Q, Huang Y F, Lin H M, Wei Y L 2004 Sol. Energy 76 745
[15] Hart J N, Menzies D, Cheng Y B, Simon G P, Spiccia L 2006 C. R. Chimie 9 622
[16] 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 物理学报 54 5943]
[17] Yang S M, Huang Y Y, Huang C H, Zhao X S 2002 Chem. Mater. 14 1500
[18] Yang S M, Li F Y, Huang C H 2003 Sci. China B 33 59 (in Chinese) [杨术明、 李福友、 黄春辉 2003 中国科学B 33 59]
[19] Kay A, Graetzel M 2002 Chem. Mater. 14 2930
[20] Lenzmann F, Krueger J, Burnside S, Brooks K, Graetzel M, Gal D, Ruhle S, Cahen D 2001 J. Phys. Chem. B 105 6347
[21] 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
[22] Schlichthorl G,Huang S Y, Sprague J, Frank A J 1997 J. Phys. Chem. B 101 8141
[23] Schlichthorl G, Park N G, Frank A J 1999 J. Phys. Chem. B 103 782
[24] Stathatos E, Lianos R, Zakeeruddin S M, Liska P, Graetzel M 2003 Chem. Mater. 15 1825
[25] Hu L H, Dai S Y, Wang K J 2003 Acta Phys. Sin. 52 2135 (in Chinese) [胡林华、 戴松元、 王孔嘉 2003 物理学报 52 2135]
[26] Schlichthorl G, Park N G, Frank A J 1999 J. Phys. Chem. B 103 782
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