Multi-section spectrum adjustable steady-state solar simulator

Abstract

A multi-band spectrum adjustable steady state solar simulator comprises a high-matching primary specific spectrum system, a multi-band fine adjustment system and a dodging parallel system. The high-matching primary specific spectrum system utilizes a light source and a filter to generate a required high-matching specific spectrum. The multiband fine adjustment system adjusts the radiation intensity of the required spectrums of different spectral bands, and the adjusted spectrums are sent to the dodging parallel system. And the dodging parallel system performs parallelization processing on the adjusted spectrum, so that the light spots finally reaching the test plane are more parallel and uniform. The solar simulator is good in spectrum matching and uniformity, and flexible adjustment of multiple sections of spectrums can be achieved.

Description

technical field [0001] The invention belongs to the technical field of scientific testing instruments, and relates to a solar simulator technology, which is suitable for sunlight simulation during the photoelectric performance test of multi-junction solar cells. Background technique [0002] The solar simulator can be used in the measurement of photodetectors and illumination tests, etc., especially in the field of photoelectric performance testing of solar cells, it is a very important part. The photoelectric performance of solar cells is closely related to the distribution of the solar spectrum. Therefore, the solar simulator not only requires consistent light intensity, but also requires a high degree of spectral mismatch. Therefore, for the measurement of photoelectric performance of multi-junction solar cells, solar simulators are required. It matches the multi-junction structure of solar cells, and can realize multi-band adjustable functions to meet the precise measure...

AI Technical Summary

Problems solved by technology

On the one hand, due to the combination of multi-light sources and multi-filter solar simulator structure, there are many light sources, and the optical path structure is complex, and it needs to pass through multiple beam-combining mirrors to attenuate more, the more adjustable wavebands, the more difficult it is; on the other hand , because multiple light sources are limited by the irradiated area, the irradiated spot is small and the cost is high, especially the adjustable solar simulator with more than four bands is more difficult and costly

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