Time-resolved stimulated emission in an α-sexithienyl thin film

被引:0
|
作者
Urbasch, G [1 ]
Giessen, H
Murgia, M
Zamboni, R
Mahrt, RF
机构
[1] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany
[2] Univ Marburg, Wissensch Zentrum Mat Wissensch, D-35032 Marburg, Germany
[3] CNR, Ist Spettroscopia Mol, I-40126 Bologna, Italy
[4] Max Planck Inst Polymerforsch, D-55128 Mainz, Germany
关键词
organic semiconductors based on conjugated molecules (not polymers); polycrystalline thin films; time-resolved fast spectroscopy; optical absorption and emission spectroscopy; stimulated luminescence;
D O I
10.1016/S0379-6779(00)00513-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have investigated the stimulated emission of an evaporated thin Blm of alpha -sexithienyl at 20 g. We have performed femtosecond differential transmission measurements with excitation energies around 2.35 eV and probing the spectral region from 2 to 2.65 eV. The results are compared to time-resolved photoluminescence spectra. We observe amplification of the probe light at the spectral position of a sharp peak measured in time-resolved photoluminescence. The stimulated emission decays with a time constant of 2.5 ps, (C) 2001 Elsevier Science B.V. All rights reserved,
引用
收藏
页码:49 / 51
页数:3
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