Environmentally Friendly InP-based Quantum Dots for Efficient Wide Color Gamut Displays
Journal
ACS Energy Letters
Date
2020.03.19
Abstract
Quantum dot (QD) has been regarded as an ideal light emitter for current and next generation wide color gamut displays. Especially for practical applications, it has been urgently requested to produce environmentally friendly InP-based QDs showing high efficiency and better color purity. In this perspective, the strategy of tuning the wavelength and spectral width of the QDs is introduced to optimize the brightness and color space agreement in displays. And, the critical parameters affecting photophysical properties, such as the uniformity of InP core, the thickness and isotropic shape of the ZnSe shell, the electron/hole distribution, surface dangling defects, oxidative phase and the stacking faults in the crystalline structure, are carefully examined. Finally, important qualitative and quantitative analytical methods are suggested to understand the nature of the ligands on the QDs so that the practical applications with QDs can be more diversified in near future.