Experimental and theoretical studies of absorption and photoluminescence excitation spectra of poly(p-phenylene vinylene)

Jenwei Yu*, J. H. Hsu, K. R. Chuang, C. L. Chao, S. A. Chen, F. J. Kao, W. S. Fann, S. H. Lin

*此作品的通信作者

研究成果: Article同行評審

30 引文 斯高帕斯(Scopus)

摘要

In this paper, we present the experimental absorption spectra and photoluminescence excitation spectra of poly(p-phenylene vinylene) (PPV). We also present the theoretically calculated absorption and photoluminescence spectra of PPV. The singlet-to-singlet transition energies and moments calculated from the intermediate neglect of differential overlap with the spectroscopic parametrization (INDO/S) semi-empirical method were used to analyze the absorption spectra. The symmetrical vibrational modes calculated from the abinitio method were used to obtain the vibronic features in the spectra of PPV. It is demonstrated that the inhomogeneity observed in the absorption spectra of PPV can be modeled by summing up the absorption of PPV oligomers with different chain lengths. The difference between absorption and photoluminescence excitation spectra is explained.

原文English
頁(從 - 到)7-13
頁數7
期刊Synthetic Metals
74
發行號1
DOIs
出版狀態Published - 1 9月 1995

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