Title :
Probing Photoconductivity in Discotic Liquid Crystals by Terahertz Time-Domain Spectroscopy
Author :
Xia, Chen ; Duzhko, Volodimyr ; Shi, Hefei ; Singer, Kenneth D. ; Shan, Jie
Author_Institution :
Case Western Reserve Univ., Cleveland
Abstract :
Optical pump/terahertz probe spectroscopy was employed to investigate electronic charge transport in discotic liquid crystals. Frequency dependent complex conductivity was observed in phthalocyanines for a few hundred of picoseconds following a femtosecond photoexcitation.
Keywords :
discotic liquid crystals; optical pumping; organic semiconductors; photoconductivity; submillimetre wave spectra; discotic liquid crystals; electronic charge transport; femtosecond photoexcitation; optical pump; photoconductivity; phthalocyanines; terahertz probe spectroscopy; terahertz time-domain spectroscopy; Conductivity; Frequency dependence; Liquid crystals; Optical pumping; Photoconductivity; Probes; Spectroscopy; Time domain analysis; Ultrafast electronics; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/CLEO.2007.4453324
