Thermochromic Studies of MEH-PPV
Bhuvneshwar Prasad Gaur1,*, Dr. A. K. Sharma1, Vaibhav Jain2 and Dr. Anil Govindan3
1,*Research Scholar Deptt. of Physics, D.A.V. (P.G.) College, Bulandshahr, India
1Head, Deptt. of Physics, D.A.V. (P.G.) College, Bulandshahr, India
2Assosiate prof. Deptt. of Physics, D.N. (P.G.) College, Gulaothi, Bulandshahr
3Associate prof. M.M.H. (P.G.) College, Ghaziabad
In this work we studied the optical properties of Poly [2-methoxy-5-(2’-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV) using polymeric blends with polystyrene. The photoluminescence spectrum of (MEH-PPV) present three characteristic peaks correlating to aggregate electronic transition at 608, 674 and 742 nm at 10° K. An addition of Polystyrene in MEH-PPV films induces a red shift in the absorption spectrum and the photoluminescence spectrum presents a new peak at high energy centred at about 572 nm at 10° K. It is attributed to intra band transition between localized intraband states.
