Structural and Surface Morphology Analysis of Copper Phthalocyanine Thin Film Prepared by Pulsed Laser Deposition and Thermal Evaporation Techniques

Mohammed T Hussein,Kadhim A Aadim,Eman K Hassan

doi:10.4236/ampc.2016.64009

Abstract

In the present paper, Copper Phthalocyanine (CuPc) thin films were deposited on glass and silicon substrate by thermal evaporation and pulsed laser deposition (PLD) methods. CuPc thin films prepared at different annealing temperatures (298, 323, 348, 373, 423 K) respectively. The structure and surface morphology of CuPc in powder and thin films forms prepared by two methods were studied using Energy dispersive X-ray (EDX), X-ray florescence (XRF), X-ray diffraction (XRD), Atomic force microscope (AFM), and Scanning electron microscope (SEM). It showed that there was a change and enhancement in the crystallinity and surface morphology due to change in the annealing temperature (Ta). The purpose of our work is to find the optimal temperature for which the film produces best structural properties for CuPc thin film to produce organic field effect transistor. Analysis of X-ray diffraction patterns of CuPc in powder form showed that it had an α-poly-crystalline phase with monoclinic structure, with preferentially oriented (100) plane transform to β-single crystalline morestable structure at different annealing temperatures.

Highlights

The materials considered of most importance are the phthalocyanines (Pc) in the organic dyes and pigments
The purpose of our work is to find the optimal temperature for which the film produces best structural properties for CuPc thin film to produce organic field effect transistor
Thin films of CuPc were fabricated by the thermal evaporation and pulsed laser deposition (PLD) techniques on glass and silicon substrates with thickness 600 nm prepared at different annealing temperatures successfully

Summary

Introduction

The materials considered of most importance are the phthalocyanines (Pc) in the organic dyes and pigments. Phthalocyanine is a generally P-type semiconductor, thermally stable and can be sublimated as thin films. (2016) Structural and Surface Morphology Analysis of Copper Phthalocyanine Thin Film Prepared by Pulsed Laser Deposition and Thermal Evaporation Techniques. The electrical, optical and structural properties of Pc thin films are dependent on various parameters such as evaporation rate, substrate temperature and annealing temperature [3]. It was reported that the β-form is a monoclinic crystal, more stable phase and may be thermally derived from the α-form [6]. In order to increase the mobility of π-electrons, the two hydrogen atoms were replacing by a single metal atom

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Conclusion