FEMTOSECOND DYNAMICS OF PHOTOGENERATED SOLITONS AND POLARONS IN TRANS-POLYACETYLENE

被引：60

作者：

ROTHBERG, L ^{[1
]}

JEDJU, TM ^{[1
]}

TOWNSEND, PD ^{[1
]}

ETEMAD, S ^{[1
]}

BAKER, GL ^{[1
]}

机构：

[1] BELL COMMUN RES INC,RED BANK,NJ 07701

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.65.100

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Intrachain and interchain excitations are clearly identified by polarized time-resolved absorption studies of photoinduced midgap bands in well-aligned trans-polyacetylene. We report spectroscopic evidence of the lattice deformation during intrachain photogeneration of charged soliton pairs, and see these pairs recombine geminatley in <2 ps. For incident polarization perpendicular to the chain direction, our data also show that interchain electron-hole pair excitation occurs with fairly high quantum yield and leads to polaron formation. © 1990 The American Physical Society.

引用

页码：100 / 103

页数：4

共 24 条

[1] INTERCHAIN ORDER, SOLITON CONFINEMENT, AND ELECTRON-HOLE PHOTOGENERATION IN TRANS-POLYACETYLENE [J].

BAERISWYL, D ;

MAKI, K .

PHYSICAL REVIEW B, 1988, 38 (12) :8135-8141

[2] BREATHERS AND PHOTOINDUCED ABSORPTION IN POLYACETYLENE [J].

BISHOP, AR ;

CAMPBELL, DK ;

LOMDAHL, PS ;

HOROVITZ, B ;

PHILLPOT, SR .

PHYSICAL REVIEW LETTERS, 1984, 52 (08) :671-674

[3] PHOTOCONDUCTIVITY IN TRANS-POLYACETYLENE - TRANSPORT AND RECOMBINATION OF PHOTOGENERATED CHARGED EXCITATIONS [J].

BLEIER, H ;

ROTH, S ;

SHEN, YQ ;

SCHAFERSIEBERT, D .

PHYSICAL REVIEW B, 1988, 38 (09) :6031-6040

[4] OPTO-ELECTROCHEMICAL SPECTROSCOPY OF TRANS-(CH)X [J].

FELDBLUM, A ;

KAUFMAN, JH ;

ETEMAD, S ;

HEEGER, AJ ;

CHUNG, TC ;

MACDIARMID, AG .

PHYSICAL REVIEW B, 1982, 26 (02) :815-826

[5] OPTICAL-ABSORPTION FROM POLARONS IN A MODEL OF POLYACETYLENE [J].

FESSER, K ;

BISHOP, AR ;

CAMPBELL, DK .

PHYSICAL REVIEW B, 1983, 27 (08) :4804-4825

[6] CONFORMATIONAL DEFECTS IN DURHAM POLYACETYLENE - PHOTOINDUCED IR ABSORPTION [J].

FRIEND, RH ;

SCHAFFER, HE ;

HEEGER, AJ ;

BOTT, DC .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (35) :6013-6023

[7] SOLITONS IN CONDUCTING POLYMERS [J].

HEEGER, AJ ;

KIVELSON, S ;

SCHRIEFFER, JR ;

SU, WP .

REVIEWS OF MODERN PHYSICS, 1988, 60 (03) :781-850

[8] SEMICLASSICAL FORMALISM OF OPTICAL-ABSORPTION AND BREATHERS IN POLYACETYLENE [J].

HOROVITZ, B ;

BISHOP, AR ;

PHILLPOT, SR .

PHYSICAL REVIEW LETTERS, 1988, 60 (21) :2210-2213

[9] THERMAL-INSTABILITY OF THE TRANS-POLYACETYLENE POLARON [J].

JACOBS, AE ;

MACREADY, WG ;

SZETO, KY ;

MAKI, K .

PHYSICAL REVIEW B, 1990, 41 (06) :3647-3650

[10] TUNABLE FEMTOSECOND RADIATION IN THE MID-INFRARED FOR TIME-RESOLVED ABSORPTION IN SEMICONDUCTORS [J].

JEDJU, TM ;

ROTHBERG, L .

APPLIED OPTICS, 1988, 27 (03) :615-618

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