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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/27620

Title: Experimental and Theoretical Investigations of Absorption and Emission Spectra of Light Emitting Polymer, MEH-PPV in Solution
Authors: R. Chang;J.H. Hsu;W.S. Fann;K.K. Liang;C.H. Chang;M. Hayashi;J. Yu;S.H. Lin;E.C. Chang;K.R. Chuang;S.A. Chen
Contributors: NTOU:Institute of Optoelectronic Sciences
Date: 2000-01-28
Issue Date: 2011-10-21T02:32:25Z
Publisher: Chemical Physics Letters
Abstract: Abstract:We report the absorption and photoluminescence spectra of the MEH-PPV polymer in a chloroform solvent. In the analysis, we assume that the polymer consists of short conjugated segments which are called oligomers with different lengths. The appearance of each chain length is controlled by a distribution function. Based on the conformational disorder caused by torsional motion, we found that the distribution function should take a Gaussian form with its center and width being adjustable parameters. While the energy level of the emissive S1 state of the oligomer and the corresponding oscillator strength are calculated from exciton theory. In addition, the associated vibrational motions are considered in determining the spectral shape in which both displacement and distortion of the potential surfaces are taken into account. With this information, the calculation result can fit the experiment reasonably well.
Relation: 317(1-2), pp.142-152
URI: http://ntour.ntou.edu.tw/handle/987654321/27620
Appears in Collections:[光電科學研究所] 期刊論文

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