Abstract
The chapter goes onto explore the impact of sputtering parameters on structural, optical, and mechanical properties of reactive magnetron sputtered ZnO thin film. Stress relaxed and room temperature deposited ZnO film is highly desirable from fabrication aspects. Oxygen partial pressure is varied from 30 to 60% and c-axis oriented ZnO (002) thin films are prepared at room temperature. The stress varies in −0.06 × 109 to −2.27 × 109 dyne/cm2 range, and compressive in nature. A detailed characterization of ZnO sputtered film is carried out in order to correlate the mechanical, structural, and optical properties of thin film. A theoretical model has been proposed to understand the consequences of oxygen-induced stress in ZnO thin films. It is established that nearly stress-free, single-phase, and highly c-axis oriented ZnO thin film can be deposited using a unique combination of sputter parameters.
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