A spectrum-adjusted white organic light-emitting diode for the optimization of luminous efficiency and color rendering index

作者：Chen Wei; Chen Shu ming

来源：Optoelectronics Letters, 2015, 11(1): 22-25.

DOI：10.1007/s11801-015-4167-2

• Color coordinates
• Color rendering index
• External quantum efficiency
• High color rendering index
• Luminous efficiency
• Solid state lighting
• Theoretical calculations
• White organic light emitting diodes

High luminous efficiency and high color rendering index (CRI) are both the foremost factors for white organic light-emitting diodes (WOLEDs) to serve as next generation solid-state lighting sources. In this paper, we show that both luminous efficiency and CRI can be improved by adjusting the green/red spectra of WOLEDs. With green emission spectra matching with the human photopic curve, the WOLEDs exhibit higher luminous efficiency and higher CRI. Theoretical calculation shows that by tuning the white emission spectra to maximally match with the human photopic curve, the luminous efficiency can be improved by 41.8% without altering the color coordinates, the color correlated temperature (CCT) and the external quantum efficiency (EQE) of the WOLEDs.

• 出版日期2015
• 单位中国科学技术大学