Quantum dot light enhancement substrate and lighting device including same
摘要
說(shuō)明書(shū)
In certain embodiments of the present invention, a component (e.g., QD-LES) includes a high index of refraction (e.g., preferably >1.6, most preferably >1.8) material in combination with scattering agents. Such embodiments can achieve improved light extraction efficiency. In addition to the out-coupling efficiency, in certain embodiments, a component can be tuned to function as an extremely precise color converter. Source light will be concentrated via waveguide-mode in the component, where it will probabilistically interact with a QD/scatterer formulation, converting a percentage of the photons into precisely tuned wavelengths while scattering waveguided light out of the device to contribute to EQE and power efficiency. The resultant light can be tuned to extremely high CRIs (e.g., >85, >90, >95) while, due to the light conversion properties and the excellent stability of color conversion material CCM including in the film, maintaining CRI intensity independence over a wide range of light intensities and OLED lifetimes. In certain embodiments, a component can be tuned to convert any light-source containing blue light into a high CRI device, resulting in a highly versatile, highly process compatible, low-cost, and high-stability light-extracting substrate.
