Solar Simulator on the Basis of Powerful Light-Emitting Diodes

Abstract

The Article describes the construction design and experimental results of the Solar Simulator, based on powerful LEDs with different radiation spectrum. There was established that the block from 25 light-emitting diodes provides radiation intensity sufficient for carrying-out of AM1.5G standard requirements. Fine tuning of the resultant spectrum and the required illumination for all radiation spectral components were obtained through light-emitting diodes current control.

Improved spectral mismatch and performance of a phosphor-converted light-emitting diode solar simulator

“…According to section 2.1, the test plane of our solar simulator was of 125×125 mm or 0.015625 m 2 . To achieve good light uniformity on the test plane, this light source was designed larger [5], [7], our LEDs panel was 190×125 mm or 0.02325 m 2 . All LEDs were divided into 7 clusters: pc-nWLED, 420 nm, and 5 clusters of NIR.…”

“…13, No. 5, October 2023: 4931-4941 4932 LED), for example, by mixing the VIS spectrum with blue, red, and white spectrum [3]- [5], [11]- [13] or with a mixed of blue, warm white, and cool white spectrum [14], [15] and combined with NIR spectrum of 730 to 740 nm, 840 to 855 nm, and 940 to 950 nm [3]- [5], [11], [14], [15].…”

“…In the NIR range, the number of spectrum cannot be increased greatly because of a limitation of LED technology. Most of the previous researches have used the combination of NIR LED between 3 to 6 different wavelengths of 701 to 1,100 nm [3]- [5], [11], [14]- [20]. The complexity of emitting of a light spectrum from a solar simulator to mimic the previous AM1.5G standard spectrum is the color-mix method as mentioned above.…”