Title :
Optical and electrical characterizations of PVA films embedded with CdTe nanocrystals
Author :
Hoffmeister, Denize M. ; da Cunha, Carlo R. ; Silva, Felipe O. ; Schiavon, Marco A.
Author_Institution :
Dept. de Quim., Univ. Fed. do Parana, Curitiba, Brazil
Abstract :
Cadmium telluride nanocrystals were covalently bound to a partially hydrolyzed matrix of poly(vinyl alcohol). Its chemical and electronic structures were studied via thermogravimetric analysis, Fourier transform infrared and ultraviolet/visible spectroscopies. The amount of material incorporated in the matrix was estimated from thermogravimetric measurements and the dielectric constant of the films. Electrical parameters of the films were studied via Van der Pauw measurements and point towards a hopping transport assisted by the formation of polarons in the polymeric matrix.
Keywords :
Fourier transform spectra; II-VI semiconductors; cadmium compounds; dielectric thin films; electronic structure; filled polymers; hopping conduction; infrared spectra; nanocomposites; nanoparticles; permittivity; polarons; polymer films; thermal analysis; ultraviolet spectra; visible spectra; CdTe; Fourier transform infrared spectroscopy; PVA films embedded cadmium telluride nanocrystals; Van der Pauw measurement; chemical structure; dielectric constant; electrical properties; electronic structure; hopping transport; hydrolyzed matrix poly(vinyl alcohol); nanoparticles; optical properties; polaron formation; polymeric matrix; thermogravimetric analysis; ultraviolet-visible spectroscopy; Organic Electronics; Semiconductors Nanostructures;
Conference_Titel :
Microelectronics Technology and Devices (SBMicro), 2013 Symposium on
Conference_Location :
Curitiba
Print_ISBN :
978-1-4799-0516-4
DOI :
10.1109/SBMicro.2013.6676114
