Solar spectrum matching with white OLED and monochromatic LEDs

In this paper, the solar spectrum matching in the visible range of 380-780 nm with white organic light-emitting diode (OLED) and monochromatic light-emitting diodes (LEDs) is investigated. The correlation index ( ) is used to evaluate the difference between the matching spectrum and the solar spectr...

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Published inApplied optics. Optical technology and biomedical optics Vol. 57; no. 10; p. 2659
Main Authors Yu, Hui-Yuan, Cao, Guan-Ying, Zhang, Jing-Hui, Yang, Yi, Sun, Wen-Liang, Wang, Li-Ping, Zou, Nian-Yu
Format Journal Article
LanguageEnglish
Published United States 01.04.2018
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Summary:In this paper, the solar spectrum matching in the visible range of 380-780 nm with white organic light-emitting diode (OLED) and monochromatic light-emitting diodes (LEDs) is investigated. The correlation index ( ) is used to evaluate the difference between the matching spectrum and the solar spectrum. The optimal combination is obtained by the least squares method. We also perform subtraction experiments to find the optimal combination. We utilize a common white OLED device design and just change the species of monochromatic LEDs used. We report and evaluate different degrees of matching effects. The results show that the correlation index of the best combination can reach 94.09% with white OLED and 36 monochromatic LEDs. We define three levels of performance as an evaluation system in accordance with the matching effect. The level is excellent with an above 90.14%. The good level is from 86.65% to 58.28%. From 42.08% to 33.06% is the reasonable level. Compared with other methods, using white OLED combined with monochromatic LEDs achieves the best solar spectrum matching effect. The results can be applied to different requirements of engineering practice.
ISSN:2155-3165
DOI:10.1364/AO.57.002659