Dynamics of charge pair generation in ladder-type poly(para-phenylene) at different excitation photon energies -: art. no. 035215

被引：33

作者：

Gulbinas, V

Zaushitsyn, Y

Bässler, H

Yartsev, A

Sundström, V

机构：

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

[2] Lund Univ, S-22100 Lund, Sweden

[3] Univ Marburg, Marburg, Germany

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.70.035215

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Generation of charge pairs in a ladder-type poly(para-phenylene) was investigated by means of electric field modulated femtosecond pump-probe absorption spectroscopy upon excitation at 3.1 and 4.66 eV. Exciting at 3.1 eV in the optical S-0-->S-1 transition, the number of geminately bound electron-hole pairs rises smoothly within the entire exciton life time. Upon excitation at 4.66 eV an instantaneous generation of geminate pairs superimposed on the more gradual increase is observed. Both processes are field-assisted, albeit differently. The former is attributed to ultrafast dissociation of a hot Franck-Condon state, while the latter is assigned to dissociation of vibrationally relaxed singlet excitons.

引用

收藏

页码：035215 / 1

页数：7

相关论文

共 34 条

[11]

GEACINTOV NE, 1965, J CHEM PHYS, V47, P1194

[12] 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

[13] Femtosecond relaxation of photoexcitations in a poly(para-phenylene)-type ladder polymer [J].

Graupner, W ;

Leising, G ;

Lanzani, G ;

Nisoli, M ;

DeSilvestri, S ;

Scherf, U .

PHYSICAL REVIEW LETTERS, 1996, 76 (05) :847-850

[14] Electron -: hole separation distance during the charge carrier photogeneration in conjugated polymer [J].

Gulbinas, V ;

Bässler, H ;

Yartsev, A ;

Zaushitsyn, Y ;

Sundström, V .

ADVANCED ORGANIC AND INORGANIC OPTICAL MATERIALS, 2003, 5122 :156-162

[15] Dynamic Stark effect as a probe of the evolution of geminate electron-hole pairs in a conjugated polymer -: art. no. 233203 [J].

Gulbinas, V ;

Kananavicius, R ;

Valkunas, L ;

Bässler, H .

PHYSICAL REVIEW B, 2002, 66 (23) :1-4

[16] 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

[17] Electric field dependent generation of geminate electron-hole pairs in a ladder-type π-conjugated polymer probed by fluorescence quenching and delayed field collection of charge carriers [J].

Hertel, D ;

Soh, EV ;

Bässler, H ;

Rothberg, LJ .

CHEMICAL PHYSICS LETTERS, 2002, 361 (1-2) :99-105

[18] Intrinsic and extrinsic charge carrier photogeneration in phenyl-substituted polyphenylenevinylene-trinitrofluorenone blend systems [J].

Im, C ;

Emelianova, EV ;

Bässler, H ;

Spreitzer, H ;

Becker, H .

JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (06) :2961-2967

[19] COLLISIONS OF SINGLET EXCITONS IN MOLECULAR CRYSTALS [J].

JORTNER, J .

PHYSICAL REVIEW LETTERS, 1968, 20 (06) :244-+

[20] 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

← 1 2 3 4 →