Ravi Kishore, V. V. N. ; Kokane, Sonali ; Narasimhan, K. L. ; Periasamy, N. (2004) Time resolved photoluminescence spectra of PPV film: heterogeneity and excited state relaxation Chemical Physics Letters, 386 (1-3). pp. 118-122. ISSN 0009-2614
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00092...
Related URL: http://dx.doi.org/10.1016/j.cplett.2004.01.014
Abstract
The photoluminescence (PL) spectra and PL decays of poly-p-phenylene vinylene (PPV) film prepared by the solvent-free, room temperature UV polymerization method were studied at 300 and 77 K. The analysis of the emission wavelength dependent luminescence decays of PPV film showed a lifetime distribution that varied in a systematic manner with emission wavelength. The oscillatory variation of PL decay (and average lifetime) with emission wavelength at 77 K is a new result. These results are consistent with the model that the PL of PPV film is due to energetically disordered excitons and thermally activated PL quenching is a dominant mechanism.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 37544 |
| Deposited On: | 22 Apr 2011 12:34 |
| Last Modified: | 22 Apr 2011 12:34 |
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