Manufacturing method of CIGS solar panel: the preset layer of copper indium gallium selenium thin film solar cell is prepared by alternating sputtering, and the sputtering time of Cu / GA alloy target and in target is controlled by the power controller with variable duty cycle, so as to realize the control of the final element ratio. In a sputtering cycle, the sputtering time of Cu / GA alloy target has the greatest influence on the final composition, followed by the sputtering time of in target, and the length of non sputtering time also has an influence on the composition. The copper indium gallium selenium preset layer prepared by alternating sputtering is detected by XRD, and the alloy phase is mainly cu11in9.
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