Title :
Study of transient effects in photo-excited semiconducting polymer and bulk heterojunctions
Author :
Peng, Yi-Hsing ; Cao, Weilou ; Du, Min ; Romero, Danilo ; Herman, Warren N. ; Lee, Chi H.
Author_Institution :
Univ. of Maryland, College Park
Abstract :
Transient dynamics of photoexcited carriers in MEH-PPV, PCBM-C60 and their blend is investigated by THz-TDS using a 400 nm optical pump and terahertz probe. Free and bound carriers are revealed in the measurement of the complex conductivity.
Keywords :
electrical conductivity; optical pumping; organic semiconductors; photoexcitation; polymer blends; semiconductor heterojunctions; semiconductor thin films; bound carriers; bulk heterojunction; conductivity; free carriers; optical pump; photoexcited carriers; semiconducting polymer; terahertz probe; Conductivity; Heterojunctions; Optical harmonic generation; Optical pulse generation; Optical pumping; Optical receivers; Optical transmitters; Polymers; Pulse measurements; Semiconductivity;
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.2007.4453442