Electron -: hole separation distance during the charge carrier photogeneration in conjugated polymer

被引：4

作者：

Gulbinas, V ^{[1
]}

Bässler, H ^{[1
]}

Yartsev, A ^{[1
]}

Zaushitsyn, Y ^{[1
]}

Sundström, V ^{[1
]}

机构：

[1] Inst Phis, LT-2600 Vilnius, Lithuania

来源：

ADVANCED ORGANIC AND INORGANIC OPTICAL MATERIALS | 2003年 / 5122卷

关键词：

photoconductivity; conjugated polymer; ultrafast spectroscopy; excitons; charge carriers; Stark-shift;

D O I：

10.1117/12.515659

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Charge separation dynamics in a Ladder-Type Methyl substituted Poly(Para-Phenylene) (m-LPPP) was investigated by means of electric filed modulated femtosecond pump-probe absorption spectroscopy. The Stark shift of the absorption band modified by created excitons and electron-hole pairs provided information about the average intrapair charge separation distance. The electron and hole initially separated by ca. 7 Angstrom moved away from each other to more than 30 Angstrom during 600 ps and later the separation rate decreased. Neither the initial separation distance, nor that obtained at 600 ps were found to depend on the applied electric field, only the separation rate at stronger field was slightly faster.

引用

页码：156 / 162

页数：7

共 10 条

[1] Direct observation of ultrafast field-induced charge generation in ladder-type poly(para-phenylene) [J].

Graupner, W ;

Cerullo, G ;

Lanzani, G ;

Nisoli, M ;

List, EJW ;

Leising, G ;

De Silvestri, S .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3259-3262

[2] Dynamics of the electric field-assisted charge carrier photogeneration in ladder-type poly(para-phenylene) at a low excitation intensity -: art. no. 107401 [J].

Gulbinas, V ;

Zaushitsyn, Y ;

Sundström, V ;

Hertel, D ;

Bässler, H ;

Yartsev, A .

PHYSICAL REVIEW LETTERS, 2002, 89 (10) :107401-107401

[3] Charge carrier photogeneration in conjugated polymer [J].

Gulbinas, V ;

Kananavicius, R ;

Valkunas, L ;

Bässler, H ;

Sundström, V .

ULTRAFAST PHENOMENA IN SEMICONDUCTORS 2001, 2002, 384-3 :279-286

[4]

GULBINAS V, IN PRESS DYNAMIC STA

[5] Electro-optical studies of a soluble conjugated polymer with particularly low intrachain disorder [J].

Harrison, MG ;

Möller, S ;

Weiser, G ;

Urbasch, G ;

Mahrt, RF ;

Bässler, H ;

Scherf, U .

PHYSICAL REVIEW B, 1999, 60 (12) :8650-8658

[6] ULTRAFAST FIELD-INDUCED DISSOCIATION OF EXCITONS IN CONJUGATED POLYMERS [J].

KERSTING, R ;

LEMMER, U ;

DEUSSEN, M ;

BAKKER, HJ ;

MAHRT, RF ;

KURZ, H ;

ARKHIPOV, VI ;

BASSLER, H ;

GOBEL, EO .

PHYSICAL REVIEW LETTERS, 1994, 73 (10) :1440-1443

[7] Ultrafast photogeneration of inter-chain charge pairs in polythiophene films [J].

Ruseckas, A ;

Theander, M ;

Andersson, MR ;

Svensson, M ;

Prato, M ;

Inganäs, O ;

Sundström, V .

CHEMICAL PHYSICS LETTERS, 2000, 322 (1-2) :136-142

[8]

SCHERF U, 1992, MAKROMOL CHEM, V193, P1127

[9] Spontaneous and stimulated emission from a ladder-type conjugated polymer [J].

Schweitzer, B ;

Wegmann, G ;

Hertel, D ;

Mahrt, RF ;

Bässler, H ;

Uckert, F ;

Scherf, U ;

Müllen, K .

PHYSICAL REVIEW B, 1999, 59 (06) :4112-4118

[10] Ultrafast decay dynamics of excited and charged states in alpha-sexithienyl film as revealed by femtosecond transient absorption and picosecond fluorescence spectroscopy [J].

Watanabe, K ;

Asahi, T ;

Fukumura, H ;

Masuhara, H ;

Hamano, K ;

Kurata, T .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (09) :1510-1519

← 1 →