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

• Published in: International journal of electrical and computer engineering (Malacca, Malacca) Vol. 13; no. 5; p. 4931
• Main Authors: Watjanatepin, Napat, Wannakam, Khanittha, Kiatsookkanatorn, Paiboon, Boonmee, Chaiyant, Sritanauthaikorn, Patcharanan
• Format: Journal Article
• Language: English
• Published: 01.10.2023
• ISSN: 2088-8708; 2722-2578
• DOI: 10.11591/ijece.v13i5.pp4931-4941

A phosphor-converted light-emitting diode (LED) solar simulator is an illuminance device that produced irradiance intensity and spectral close to the sunlight. It is determined as spectral mismatch, non-uniformity of irradiance, and temporal instability. This paper has improved the LED solar simulator (LSS) system to have a spectral distribution consistent with the AM1.5G spectrum at 100%. It was developed as a new prototype to have the AAA class spectral characteristics, time instability, and inconsistency according to IEC 60904-9. The results showed that an optimal approach was to use phosphor-converted natural white LED (pc-nWLED), combining a monochromatic near-infrared (NIR) (730, 800, 850, 940, and 1,000 nm) as well as the proposed LSS system capable of generating 1,000 W/m2 irradiation over the test plane of 125×125 mm and operated continuously in a constant temperature LED state for at least 2 hours, therefore suitable for demonstration of solar cell features under standard test condition (STC) in the laboratory.