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Optical and photoelectric properties of copper phthalocyanine/cadmium sulphide multilayer films prepared by vacuum sublimation

✍ Scribed by He, Zhibing ;Zhao, Gaoling ;Han, Gaorong

Book ID
105363019
Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
181 KB
Volume
203
Category
Article
ISSN
0031-8965

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✦ Synopsis

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 Β°C had the maximum photosensitivity. The ratio of the photocurrent to the dark current was 7.1 Γ— 10^3^. The CuPc/CdS multilayer films had higher photosensitivity than CuPc/ZnS multilayer films. (Β© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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