Picosecond excitation energy relaxation processes in a ladder-type π-conjugated polymer

被引：21

作者：

Hildner, Richard

Lemmer, Ulrich

Scherf, Ullrich

Koehler, Juergen

机构：

[1] Univ Bayreuth, BIMF, D-95447 Bayreuth, Germany

[2] Univ Karlsruhe, TH, Lichttech Inst, D-76131 Karlsruhe, Germany

[3] Berg Univ Gesamthsch Wuppertal, Fachbereich C Math & Nat Wissensch, D-42097 Wuppertal, Germany

[4] Berg Univ Gesamthsch Wuppertal, Inst Polymertechnol, D-42097 Wuppertal, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 429卷 / 1-3期

关键词：

MONTE-CARLO SIMULATIONS; LIGHT-EMITTING-DIODES; ELECTROLUMINESCENT POLYMERS; POLYFLUORENE FILM; DYNAMICS; POLY(PHENYLENEVINYLENE); PHOTOLUMINESCENCE; LUMINESCENCE; SPECTROSCOPY; PHOTOEXCITATIONS;

D O I：

10.1016/j.cplett.2006.08.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We studied the relaxation dynamics of excitations in the lowest electronically excited singlet state in a ladder-type pi-conjugated polymer employing picosecond time-resolved spectroscopy with high spectral resolution. At 1.5 K both the decay dynamics and the rising component of the fluorescence transients from the low-energy tail of the distribution of excited states show a strong dependence on time and on the precise emission wavelength. At room temperature, in contrast, such dependencies are not observed. Finally, the data allow us to retrieve the radiative lifetime of the excited states both at 1.5 K and 296 K. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：103 / 108

页数：6

共 34 条

[1] CHARGE TRANSPORT IN DISORDERED ORGANIC PHOTOCONDUCTORS - A MONTE-CARLO SIMULATION STUDY [J].