期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 133, 期 1, 页码 317-323出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.01.030
关键词
Semiconductors; Polymers; Atomic force microscopy (AFM); Photoluminescence spectroscopy
资金
- Council of Scientific and Industrial research
- Department of Science and Technology, New Delhi
Nanosized TiO2 has been synthesized solvothermally using an autoclave. X-ray diffraction and electron microscopy studies elucidate that the synthesized nanoparticles are strongly crystalline and are dominantly in anatase phase. UV-vis and photoluminescence (PL) spectroscopy studies show a blue shift phenomenon in the synthesized nanoparticle in contrast to the bulk anatase TiO2 which furnish evidence in support of quantum size effect. The nanocomposites of TiO2 and MEH-CN-PPV have been prepared and characterized structurally (AFM, TEM) and optically (absorbance and photoluminescence). The nanocomposites have been used in light emitting diodes and electroluminescence (EL) and current density (J-V) of the device has been evaluated. The enhanced EL at elevated voltages for MEH-CN-PPV:5% TiO2 hybrid device suggests influence of the reduced particle size and modified surface morphology. (C) 2012 Elsevier B.V. All rights reserved.
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