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Anatased TiO2 nanoparticles were prepared by controlling hydrolysis of the TiCl4. Time-resolved fluorescence experiments were carried out to study the photo-induced electron transfer dynamics in the system of the 5(6)CFL dye-sensitized TiO2 nanoparticles. For the aboved system, the formation of the charge transfer complex is attributed to the coupling interaction between the wave functions of the excited electronic state of the dye ((D*)) and the charge separated state ((D++e-)). On excitation of 5(6)CFL dye-sensitized TiO2 nanoparticle system. The injection of electrons into the conduction band of TiO2 nanoparticles takes place in two different ways: through the excited state of the 5(6)CFL dye and through direct injection from the charge transfer complex. The time-resolved fluorescence experimental results indicate that the free 5(6)CFL dye in water has double-exponential decay with lifetimes1=41 ps (74.4%) and2=3.22 ns (25.6%). However, 5(6)CFL dye-sensitized TiO2 nanoparticles have triple-exponential decay with lifetimes of1=44 ps (90.4%),2=478 ps (8.6%) and3=2.41 ns (1.0%). Our research will provide a valuable reference for the mechanism of dye-sensitized solar cell.
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Keywords:
- time-resolved fluorescence /
- photo-induced electron transfer /
- 5(6)CFL dye /
- charge transfer complex
[1] West W, Gilman P B Jr 1977 The Theory of the Photographic Process (New York: Macmillan) p251
[2] Nazeerudin M K, Kay A, Rodicio I, Humphrey-Baker R, Müller E, Liska P, Vlachopoulos N, Grätzel M 1993 J. Am. Chem. Soc. 115 6382
[3] Duncan W R, Prezhdo O V 2007 Annu. Rev. Phys. Chem. 58 143
[4] Anderson N A, Lian T Q 2005 Annu. Rev. Phys.Chem. 5 491
[5] Zeng L Y, Dai S Y, Wang K J, Shi C W, Kong F T, Hu L H, Pan X 2005 Acta Pyhs. Sin. 54 0053 (in Chinese) [曾隆月, 戴松元, 王孔嘉, 史成武, 孔凡太, 胡林华, 潘旭 2005 54 0053]
[6] Xu W W, Dai S Y, Fang X Q, Hu L H, Kong F T, Pan X, Wang K J 2005 Acta Pyhs. 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]
[7] Liu W Q, Kou D X, Hu L H, Huang Y, Jiang N Q, Dai S Y 2010 Acta Pyhs. 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]
[8] Siders P, Marcus R A 1981 J. Am. Chem. Soc. 103 748
[9] Huber R, Moser J E, Grätzel M, Wachtveitl J 2002 J. Phys. Chem. B 106 6494
[10] Adachi M, Murata Y, Takao J, Jiu J, Sakamoto M, Wang F 2004 J. Am. Chem. Soc. 126 14943
[11] Ito S, Murakami T N, Comte P, Liska P, Grätzel C, Nazeeruddin M K, Grätzel M 2008 Thin Solid Films 516 4613
[12] Ko S H, Lee D, Kang H W, Nam K H, Yeo J Y, Hong S J, Grigoropoulos C P, Sung H J 2011 Nano Lett. 11 666
[13] Peng W Q, Yanagida M, Han L Y, Ahmed S 2011 Nanotechnology 22 275709
[14] Hardin B E, Gaynor W, Ding I K, Rim S B, Peumans P, McGehee M D 2011 Organic Electronics 12 875
[15] Gao F F, Wang Y, Shi D, Zhang J, Wang M K, Jing X Y, Humphry-Baker R, Wang P, Zakeeruddin S M, Grätzel M 2008 J. Am. Chem. Soc. 130 10720
[16] Ito S, Zakeeruddin S M, Humphry-Baker R 2006 Adv. Mate. 18 1202
[17] Ghosh H N, Asbury J B, Lian T Q 1998 J. Phys. Chem. B 102 6482
[18] Ramakrishna G, Ghosh H N 2001 J. Phys. Chem. B 105 7000
[19] Ghosh H N 1999 J. Phys. Chem. B 103 10382
[20] Huber R, Spo1rlein S, Moser J E, Grä1tzel M, Wachtveitl J 2000 J. Phys. Chem. B 104 8995
[21] Cherepy N J, Smestad G P, Grätzel M, Zhang J Z 1997 J. Phys. Chem. B 101 9342
[22] Jayaweera P M, Kumarasinghe A R, Tennakone K 1999 J. Photochem.Photobiol. A 126 111
[23] Ghosh H N, Asbury J B, Weng Y, Lian T Q 1998 J. Phys. Chem. B 102 10208
[24] Lu H, Prieskorn J N, Hupp J T 1993 J. Am. Chem. Soc. 115 4927
[25] Weng Y, Wang Y, Asbury J B, Ghosh H N, Lian T Q 2000 J. Phys. Chem. B 104 93
[26] Mulliken R S, Person W B 1969 Molecular Complexes: a lecture and reprint volume (New York: Wiley)
[27] Cohen-Tannoudji C 1977 Quantum Mechanics (New York: Wiley)
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[1] West W, Gilman P B Jr 1977 The Theory of the Photographic Process (New York: Macmillan) p251
[2] Nazeerudin M K, Kay A, Rodicio I, Humphrey-Baker R, Müller E, Liska P, Vlachopoulos N, Grätzel M 1993 J. Am. Chem. Soc. 115 6382
[3] Duncan W R, Prezhdo O V 2007 Annu. Rev. Phys. Chem. 58 143
[4] Anderson N A, Lian T Q 2005 Annu. Rev. Phys.Chem. 5 491
[5] Zeng L Y, Dai S Y, Wang K J, Shi C W, Kong F T, Hu L H, Pan X 2005 Acta Pyhs. Sin. 54 0053 (in Chinese) [曾隆月, 戴松元, 王孔嘉, 史成武, 孔凡太, 胡林华, 潘旭 2005 54 0053]
[6] Xu W W, Dai S Y, Fang X Q, Hu L H, Kong F T, Pan X, Wang K J 2005 Acta Pyhs. 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]
[7] Liu W Q, Kou D X, Hu L H, Huang Y, Jiang N Q, Dai S Y 2010 Acta Pyhs. 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]
[8] Siders P, Marcus R A 1981 J. Am. Chem. Soc. 103 748
[9] Huber R, Moser J E, Grätzel M, Wachtveitl J 2002 J. Phys. Chem. B 106 6494
[10] Adachi M, Murata Y, Takao J, Jiu J, Sakamoto M, Wang F 2004 J. Am. Chem. Soc. 126 14943
[11] Ito S, Murakami T N, Comte P, Liska P, Grätzel C, Nazeeruddin M K, Grätzel M 2008 Thin Solid Films 516 4613
[12] Ko S H, Lee D, Kang H W, Nam K H, Yeo J Y, Hong S J, Grigoropoulos C P, Sung H J 2011 Nano Lett. 11 666
[13] Peng W Q, Yanagida M, Han L Y, Ahmed S 2011 Nanotechnology 22 275709
[14] Hardin B E, Gaynor W, Ding I K, Rim S B, Peumans P, McGehee M D 2011 Organic Electronics 12 875
[15] Gao F F, Wang Y, Shi D, Zhang J, Wang M K, Jing X Y, Humphry-Baker R, Wang P, Zakeeruddin S M, Grätzel M 2008 J. Am. Chem. Soc. 130 10720
[16] Ito S, Zakeeruddin S M, Humphry-Baker R 2006 Adv. Mate. 18 1202
[17] Ghosh H N, Asbury J B, Lian T Q 1998 J. Phys. Chem. B 102 6482
[18] Ramakrishna G, Ghosh H N 2001 J. Phys. Chem. B 105 7000
[19] Ghosh H N 1999 J. Phys. Chem. B 103 10382
[20] Huber R, Spo1rlein S, Moser J E, Grä1tzel M, Wachtveitl J 2000 J. Phys. Chem. B 104 8995
[21] Cherepy N J, Smestad G P, Grätzel M, Zhang J Z 1997 J. Phys. Chem. B 101 9342
[22] Jayaweera P M, Kumarasinghe A R, Tennakone K 1999 J. Photochem.Photobiol. A 126 111
[23] Ghosh H N, Asbury J B, Weng Y, Lian T Q 1998 J. Phys. Chem. B 102 10208
[24] Lu H, Prieskorn J N, Hupp J T 1993 J. Am. Chem. Soc. 115 4927
[25] Weng Y, Wang Y, Asbury J B, Ghosh H N, Lian T Q 2000 J. Phys. Chem. B 104 93
[26] Mulliken R S, Person W B 1969 Molecular Complexes: a lecture and reprint volume (New York: Wiley)
[27] Cohen-Tannoudji C 1977 Quantum Mechanics (New York: Wiley)
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