Photoelectron spectroscopy and dynamics of excitons in C60 and photopolymerized C60 films

被引：13

作者：

Long, JP ^{[1
]}

Chase, SJ ^{[1
]}

Kabler, MN ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 347卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(01)01030-2

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：

Pump-probe photoelectron spectroscopy is used to study excited states in pristine and photopolymerized C-60. For the first time in a molecular solid, vibrationally broadened singlet (SI) and triplet (TI) exciton photoemission spectra are temporally isolated and unambiguously assigned. Complex transient behaviors of S, and T, populations, including non-Markovian decays and a strongly enhanced production of T, states at high excitation, provide evidence for interactions among excitons and free carriers. A new rate-equation model reproduces a wide range of both laser- and synchrotron-based data from polymerized films. (C) 2001 Published by Elsevier Science B.V.

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页码：29 / 35

页数：7

相关论文

共 24 条

[1] Vibronic coupling in the photoemission bands of condensed C-60 [J].

Bruhwiler, PA ;

Maxwell, AJ ;

Baltzer, P ;

Andersson, S ;

Arvanitis, D ;

Karlsson, L ;

Martensson, N .

CHEMICAL PHYSICS LETTERS, 1997, 279 (1-2) :85-91

[2] TIME-RESOLVED CARRIER RELAXATION IN SOLID C-60 THIN-FILMS [J].

CHEVILLE, RA ;

HALAS, NJ .

PHYSICAL REVIEW B, 1992, 45 (08) :4548-4550

[3]

Dexheimer SL, 2000, OPTICAL AND ELECTRONIC PROPERTIES OF FULLERENES AND FULLERENE-BASED MATERIALS, P21

[4] TRANSIENT SPECTROSCOPY OF EXCITONS AND POLARONS IN C-60 FILMS FROM FEMTOSECONDS TO MILLISECONDS [J].

DICK, D ;

WEI, X ;

JEGLINSKI, S ;

BENNER, RE ;

VARDENY, ZV ;

MOSES, D ;

SRDANOV, VI ;

WUDL, F .

PHYSICAL REVIEW LETTERS, 1994, 73 (20) :2760-2763

[5] HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTROSCOPY OF THIN-FILMS OF C60 ON SI(100) [J].

GENSTERBLUM, G ;

PIREAUX, JJ ;

THIRY, PA ;

CAUDANO, R ;

VIGNERON, JP ;

LAMBIN, P ;

LUCAS, AA ;

KRATSCHMER, W .

PHYSICAL REVIEW LETTERS, 1991, 67 (16) :2171-2174

[6]

Haight R., 1995, SURF SCI REP, V21, P275

[7] Observation of triplet exciton dynamics in conjugated polymer films using two-photon photoelectron spectroscopy [J].

Hale, GD ;

Oldenburg, SJ ;

Halas, NJ .

PHYSICAL REVIEW B, 1997, 55 (24) :16069-16071

[8] PHOTOEMISSION AND C-1S NEAR-EDGE ABSORPTION FROM PHOTOPOLYMERIZED C-60 FILMS [J].

ITCHKAWITZ, BS ;

LONG, JP ;

SCHEDELNIEDRIG, T ;

KABLER, MN ;

BRADSHAW, AM ;

SCHLOGL, R ;

HUNTER, WR .

CHEMICAL PHYSICS LETTERS, 1995, 243 (3-4) :211-216

[9]

ITCHKAWITZ BS, 1995, P 22 INT C PHYS SEM

[10] Direct observation of the dynamics of excited electronic states in solids:: f-sec time resolved photoemission of C60 [J].

Jacquemin, R ;

Kraus, S ;

Eberhardt, W .

SOLID STATE COMMUNICATIONS, 1998, 105 (07) :449-453