Premium
Optical and photoelectric properties of copper phthalocyanine/cadmium sulphide multilayer films prepared by vacuum sublimation
Author(s) -
He Zhibing,
Zhao Gaoling,
Han Gaorong
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200421430
Subject(s) - sublimation (psychology) , photosensitivity , photoconductivity , phthalocyanine , materials science , photocurrent , photoelectric effect , copper , substrate (aquarium) , thin film , optoelectronics , absorption spectroscopy , analytical chemistry (journal) , chemistry , optics , nanotechnology , organic chemistry , psychology , oceanography , geology , metallurgy , psychotherapist , physics
Abstract Copper phthalocyanine (CuPc)/cadmium sulphide (CdS) multilayer films were prepared by vacuum sublimation. X‐ray diffraction, secondary ion mass, and optical absorption spectra and photoconductive properties of the multilayer films were measured. The results showed that the multilayer films had a clearly alternating layered structure on a nanometre scale. The effects of the pair number and the substrate temperature on the photosensitivity of the multilayer films were studied. It was found that three‐pair CuPc/CdS multilayer films at a substrate temperature of 150 °C had the maximum photosensitivity. The ratio of the photocurrent to the dark current was 7.1 × 10 3 . The CuPc/CdS multilayer films had higher photosensitivity than CuPc/ZnS multilayer films. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)