Effect of pressure on photoluminescence and optical absorption in MEH-PPV

Authors
Tikhoplav, RK Hess, BC
Citation
Rk. Tikhoplav et Bc. Hess, Effect of pressure on photoluminescence and optical absorption in MEH-PPV, SYNTH METAL, 101(1-3), 1999, pp. 236-237
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
101
Issue
1-3
Year of publication
1999
Pages
236 - 237
Database
ISI
SICI code
0379-6779(199905)101:1-3<236:EOPOPA>2.0.ZU;2-W
Abstract
We have studied the photoluminescence (PL) and optical absorption in MEH-PP V as a function of pressure up to 50 kbar. The PL and optical absorption ba nds redshift with pressure and the PL efficiency decreases dramatically. Th ese features are similar to results reported earlier for pressure effects i n unsubstituted PPV. However the initial pressure redshift in MEH-PPV is ab out twice as large as that in unsubstituted PPV, and the PL decays faster. The vibronic structure in the PL is maintained up to the highest pressures.