Perovskite Quantum Dots Glasses Based Backlit Displays

Perovskite quantum dots (PeQDs) have been regarded as an alternative to traditional phosphor color converters in the backlit display to improve the color gamut and rendition of LCD. However, the pending barriers of aggregation quenching and structure instability are hindering their practical applications. Herein, high-quality CsPbX3 (X = Br, Br/I) PeQDs were in situ precipitated inside glass to produce nanocomposites with superior optical performance and stability. The highest photoluminescence quantum yield (PLQY) of similar to 100% for CsPbBr3@glass is ascribed to the elimination of the inner filter effect via a physical dilution approach to restore its apparent value to an intrinsic one, and the exceptional photostability and water/heat resistance are benefited from their effective isolation from the external environment by the surrounding glass network units. Employing the PeQDs@glass@PDMS monolithic film, a high-performance backlit LCD was designed, and its color gamut reached 152% of commercial LCD and 103% of NTSC, demonstrating a great potential in the optoelectronic industry.

Automated summary

This research introduces a method using perovskite quantum dots to produce nanocomposites in glass with superior optical performance and stability, which can be used to improve the color gamut and rendition of LCD. By physically diluting to eliminate the inner filter effect and effectively isolating them from the external environment, the quantum yield and stability of the quantum dots have been significantly enhanced. The backlit LCD designed using this technology showed a color gamut reaching 152% of commercial LCD and 103% of NTSC, showcasing great potential in the optoelectronic industry.