Abstract
The solar simulator is crucial instrument to determine the performance of solar cells and modules which are core components of solar power plants. Therefore, a precise performance measurement of solar cells is very important to design a cost effective solar stimulator with high accuracy. This paper proposes the development of a precise and measurable innovative solar simulator technique. The designed solar stimulator is a continuous type for 6 inch solar cell measurement in which a reflector system is added for improving the uniformity of result. In addition, 2∼6 light emitting diodes (LEDs) are attached to the one side of the reflector. For reliable evaluation, the standard measurement of IEC60904-3 was applied and matched the uniformity, temporal instability, and spectrum values under 1000 W/m2 light intensity condition. The uniformity of the solar simulator was recorded to 1.43% by using Al reflector and LED, which was highly comparable to 3.06 before its utilization (without reflector). Thus, designed stimulator improved the temporal instability and spectrum match values, which might be considered as a class A.
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