Title :
Frequency response properties of organic photo-detectors as opto-electrical conversion devices
Author :
Morimune, Taichiro ; Kajii, Hirotake ; Ohmori, Yutaka
Author_Institution :
Center for Adv. Sci. & Innovation, Osaka Univ., Suita-Shi
fDate :
6/1/2006 12:00:00 AM
Abstract :
Frequency performances and sensitivities for three types of organic photo-detector (OPD) were studied for an opto-electrical conversion device. A high efficiency of 19.4 % of the external conversion efficiency and a high cutoff frequency response of 16 MHz were achieved using a mixed-layer between copper phthalocyanine (CuPc) and N, N´-bis (2,5-di-tert-butylphenyl) 3,4,9,10-perylene dicarboximide (BPPC) at a reverse bias voltage of 8 V under red incident light. These results were achieved by increasing exciton dissociation and charge carrier generation and to reduce the number of trapped carriers at the interfaces between CuPc and BPPC. The transmission of a moving picture was successfully demonstrated using mixed-layer OPD as an opto-electrical conversion device. These results indicate that it is possible for an OPD to be used as an opto-electrical conversion device in high-speed optical transmission systems
Keywords :
copper compounds; excitons; frequency response; organic compounds; photodetectors; 16 MHz; 8 V; N, N´-bis (2,5-di-tert-butylphenyl) 3,4,9,10-perylene dicarboximide; charge carrier generation; copper phthalocyanine; exciton dissociation; frequency performances; frequency response properties; frequency sensitivities; optical transmission systems; optoelectrical conversion devices; organic photodetectors; red incident light; trapped carriers; Charge carriers; Copper; Cutoff frequency; Excitons; Frequency conversion; Frequency response; High speed optical techniques; Optical devices; Optical sensors; Voltage; Exciton diffusion length; frequency response; high-speed; organic photo-detector (OPD); sensitivity;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2006.874505
