Organic photodetectors based on phthalocyanine and fullerenes: dielectric properties.
Fabrication and characterization of organic photodetectors based on copper phthalocyanine and fullerenes are presented. We study current-voltage and impedance characteristics of the devices under dark and varied illumination conditions. The current-voltage characteristics in the reverse bias show little or no dark current and large photocurrent. The results show that photocurrent in the devices is associated with a decrease in bulk resistance and an increase in dielectric constant of the active material.
Indian Association for the Cultivation of Science, Department of Solid State Physics, Jadavpur, Kolkata 700032, India.
Satyajit
S
Sahu
Amlan J
AJ
Pal