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Exciton dissociation process and its mechanism at the NPB-Alq3 interface are studied by means of transient photovoltage techniques. For bilayer structured samples made from NPB and Alq3, the transient photovoltage upon 355 nm pulsed laser irradiation was measured. By analysis of the transient photovoltage of samples with different structures or with interface exciton blocking layer that climinates the effect of exciton dissociation at the external interface, it is concluded that the mechanism of exciton dissociation at the NPB-Alq3interface results in holes injected into NPB and electrons injected into Alq3.
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Keywords:
- exciton dissociation /
- interface /
- transient photovoltage
[1] Lei Y L, Liu R, Zhang Y, Tan X W, Xiong Z H 2009 Acta Phys. Sin. 58 1269 (in Chinese) [雷衍连、刘 荣、张 勇、谭兴文、熊祖洪 2009 物理学报 58 1269]
[2] Yu H Z, Peng J B, Liu J C 2009 Acta Phys. Sin. 58 669 (in Chinese) [於黄忠、彭俊彪、刘金成 2009 物理学报 58 669]
[3] Kim J Y, Lee K, Coates N E, Moses D, Nguyen T Q, Dante M, Heeger A J 2007 Science 317 222
[4] Geacintov N, Pope M, Kallmann H 1966 J. Chem. Phys. 45 2639
[5] Peumans P, Uchida S, Forrest S R 2003 Nature 425 158
[6] Gregg B A, Hanan M C 2003 J. Appl. Phys. 93 3605
[7] Killesreiter H, Baessler H 1971 Chem. Phys. Lett. 11 411
[8] Killesreiter H, Baessler H 1972 Phys. Status Solidi B 51 657
[9] Lee C H, Yu G, Moses D, Heeger A J, Srdanov V I 1994 Appl. Phys. Lett. 65 664
[10] Pan Y L, Chen L B, Wang Y, Zhao Y Y, Li F M, Wagiki A, Yamashita M, Tako T 1996 Appl. Phys. Lett. 68 1314
[11] Song Q L, Wu H R, Ding X M, Hou X Y, Li F Y, Zhou Z G 2006 Appl. Phys. Lett. 88 232101
[12] Sun X Y, Ding B F, Song Q L, Zheng X Y, Ding X M, Hou X Y 2008 Appl. Phys. Lett. 93 063301
[13] Song Q L, Li C M, Chan-Park M B, Lu M, Yang H, Hou X Y 2007 Phys. Rev. Lett. 98 176403
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[1] Lei Y L, Liu R, Zhang Y, Tan X W, Xiong Z H 2009 Acta Phys. Sin. 58 1269 (in Chinese) [雷衍连、刘 荣、张 勇、谭兴文、熊祖洪 2009 物理学报 58 1269]
[2] Yu H Z, Peng J B, Liu J C 2009 Acta Phys. Sin. 58 669 (in Chinese) [於黄忠、彭俊彪、刘金成 2009 物理学报 58 669]
[3] Kim J Y, Lee K, Coates N E, Moses D, Nguyen T Q, Dante M, Heeger A J 2007 Science 317 222
[4] Geacintov N, Pope M, Kallmann H 1966 J. Chem. Phys. 45 2639
[5] Peumans P, Uchida S, Forrest S R 2003 Nature 425 158
[6] Gregg B A, Hanan M C 2003 J. Appl. Phys. 93 3605
[7] Killesreiter H, Baessler H 1971 Chem. Phys. Lett. 11 411
[8] Killesreiter H, Baessler H 1972 Phys. Status Solidi B 51 657
[9] Lee C H, Yu G, Moses D, Heeger A J, Srdanov V I 1994 Appl. Phys. Lett. 65 664
[10] Pan Y L, Chen L B, Wang Y, Zhao Y Y, Li F M, Wagiki A, Yamashita M, Tako T 1996 Appl. Phys. Lett. 68 1314
[11] Song Q L, Wu H R, Ding X M, Hou X Y, Li F Y, Zhou Z G 2006 Appl. Phys. Lett. 88 232101
[12] Sun X Y, Ding B F, Song Q L, Zheng X Y, Ding X M, Hou X Y 2008 Appl. Phys. Lett. 93 063301
[13] Song Q L, Li C M, Chan-Park M B, Lu M, Yang H, Hou X Y 2007 Phys. Rev. Lett. 98 176403
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