Advanced Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 29, 2024

Abstract Cesium lead halide perovskite quantum dots (QDs) exhibit promising potential due to their excellent optoelectronic properties, but the poor stability and limited processability of it are main obstacles for practical applications. Here, a facile strategy is reported synthesis ultra‐stable dot polymer films overcome these bottlenecks, where QDs covalently bonded chain through thiol‐ene click reaction during photopolymerization process. The QD@polymer film exhibits hydrophobicity underwater photoluminescent (PL) over 240 days without PL decay. Notably, can maintain 85% intensity even in strong acid solution (pH 1) 135 days, longest endurance time so far harsh conditions. In addition, also presents thermal stability, showing reversible on/off switching behavior 30 heating‐cooling cycles. Integrating efficient photoluminescence, ultra‐stability, solution‐processability, photo‐polymerizability, system demonstrates highly desired suitability various applications, including patterned QD arrays luminescent textiles. Furthermore, white light emitting device equipped with prepared as light‐converting layers achieves emission color coordinate (0.34, 0.33) 129% gamut 99% coverage National Television Standard Committee (NTSC) space.

Язык: Английский