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Based on the SSH model, polaron dynamics in a system of highly ordered conjugated polymer chains is investigated, including polaron formation and transport in the presence of an external electric field. It is found that, beyond a certain strength of the interchain coupling, the injected electron will induce a two-dimensional delocalized polaron state, expanding over several chains. Dynamical simulations suggest that, under the same electric field, two-dimensional interchain delocalized polarons move faster than intrachain localized polarons, as suggested by earlier experiments.
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Keywords:
- interchain delocalized polaron /
- interchain coupling
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[2] Campbell I H, Smith D L 2001 Solid State Physics 55 1
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[9] An Z, Wu C Q, Sun X 2004 Phys. Rev. Lett. 93 216407
[10] An Z, Di B, Zhao H, Wu C Q 2008 Eur. Phys. J. B 63 71
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[13] Fesser K 1989 Phys. Rev. B 40 1962
[14] Gao K, Liu X J, Liu D S, Xie S J 2008 Phys. Lett. A 372 2490
[15] Lanzani G, Frolov S V, Lane P A 1997 Phys. Rev. Lett. 79 3066
[16] McCullough R D 1998 Adv. Mater 10 93
[17] Lane P A, Liess M, Wei X 1998 Chem. Phys. 227 57
[18] Dodabalapur A, Bao Z, Makhija A 1998 Appl. Phys. Lett. 73 142
[19] Sirringhaus H, Brown P J, Friend R H 1999 Nature 401 685
[20] sterbacka R, An C P, Jiang X M 2000 Science 287 839
[21] Johansson , Stafstrm S 2002 Phys. Rev. B 65 045207
[22] Johansson A, Stafstrm S 2004 Phys. Rev. B 69 235205
[23] Johansson , Stafstrm S 2002 Phys. Rev. B 66 085208
[24] Su W P, Schrieffer J R, Heeger A J 1980 Phys. Rev. B 22 2099
[25] Li Y, Liu X J, Fu J Y 2006 Phys. Rev. B 74 184303
[26] Wu C Q, Qiu Y, An Z, Nasu K 2003 Phys. Rev. B 68 125416
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[1] Chang C K, Fincher C R, Park Y W, Heeger A J, Shirakawa H, Louis E J, Gau S C, MacDiarmid A G 1977 Phys. Rev. Lett. 39 1098
[2] Campbell I H, Smith D L 2001 Solid State Physics 55 1
[3] Brabec C J, Sariciftci N S, Hummelen J C 2001 Adv. Funct. Mater. 11 15
[4] Su W P, Schrieffer J R, Heeger A J 1979 Phys. Rev. Lett. 42 1698
[5] Heeger A J, Kivelson S, Schrieffer J R, Su W P 1988 Rev. Mod. Phys. 60 782
[6] Li H H, Li D M, Liu W 2008 Acta Phys. Sin. 57 1117(in Chinese) [李海宏、 李冬梅、 刘 文 2008 57 1117]
[7] Lima M P, Silva G M 2006 Phys. Rev. B 74 224304
[8] Sun Z, An Z, Li Y 2009 Acta Phys. Sin. 58 (in Chinese) [孙 震、 安 忠、 李 元 2009 58 4150]
[9] An Z, Wu C Q, Sun X 2004 Phys. Rev. Lett. 93 216407
[10] An Z, Di B, Zhao H, Wu C Q 2008 Eur. Phys. J. B 63 71
[11] Shi J, Gao K, Lei J, Xie S J 2009 Acta Phys. Sin. 58 (in Chinese)[史 晶、 高 琨、 雷 杰、 解士杰 2009 58 459]
[12] Blackman J A, Sabra M K 1990 Polymer 31 621
[13] Fesser K 1989 Phys. Rev. B 40 1962
[14] Gao K, Liu X J, Liu D S, Xie S J 2008 Phys. Lett. A 372 2490
[15] Lanzani G, Frolov S V, Lane P A 1997 Phys. Rev. Lett. 79 3066
[16] McCullough R D 1998 Adv. Mater 10 93
[17] Lane P A, Liess M, Wei X 1998 Chem. Phys. 227 57
[18] Dodabalapur A, Bao Z, Makhija A 1998 Appl. Phys. Lett. 73 142
[19] Sirringhaus H, Brown P J, Friend R H 1999 Nature 401 685
[20] sterbacka R, An C P, Jiang X M 2000 Science 287 839
[21] Johansson , Stafstrm S 2002 Phys. Rev. B 65 045207
[22] Johansson A, Stafstrm S 2004 Phys. Rev. B 69 235205
[23] Johansson , Stafstrm S 2002 Phys. Rev. B 66 085208
[24] Su W P, Schrieffer J R, Heeger A J 1980 Phys. Rev. B 22 2099
[25] Li Y, Liu X J, Fu J Y 2006 Phys. Rev. B 74 184303
[26] Wu C Q, Qiu Y, An Z, Nasu K 2003 Phys. Rev. B 68 125416
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