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Copper phthalocyanine (CuPc) has attracted considerable interest because of its outstanding optical and electrical properties, which may open a wide variety of potential applications in modern optical recording and optoelectronic devices. To improve performance of devices based on CuPc, hot wall technique has been used to grow thin layers of CuPc onto the glass substrates kept at different temperatures in a vacuum of 10-5 Torr. The films so obtained are annealed and studied for structural, electrical and optical characterization. The X-ray diffraction and SEM pattern of these films show crystalline behavior of films. The films deposited at higher substrate temperature suggest the formation of more ordered and crystalline films. Analysis of optical absorption measurements on the films indicates that the interband transition energies lie in the range 2.3- 2.4 eV.
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