EFFECT OF ZnS ON QUANTUM DOT CHARACTERISTIC AND QUANTUM DOT LIGHT-EMITTING DIODE PERFORMANCE

Abstract

The structural configuration of quantum dots plays a crucial role in determining their optical properties and performance in specific applications. Encapsulating the quantum dot core with a ZnS shell to form a core/shell architecture enhances the photoluminescence emission spectrum, yielding a narrower full width at half maximum (FWHM) and thereby indicating superior color purity. Moreover, quantum dot light-emitting diodes (QDLEDs) incorporating core/shell quantum dots demonstrate improved performance in terms of luminance, current efficiency, and device lifetime stability. This enhanced efficiency is primarily attributed to the ZnS shell, which effectively reduces surface defects and facilitates carrier injections, highlighting the strong potential of core/shell quantum dots for advanced optoelectronic devices.