Wide range zero-thermal-quenching ultralong phosphorescence from zero-dimensional metal halide hybrids

Shuya Liu, Xiaoyu Fang, Bo Lu and Dongpeng Yan ()
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Shuya Liu: Beijing Normal University
Xiaoyu Fang: Beijing Normal University
Bo Lu: Beijing Normal University
Dongpeng Yan: Beijing Normal University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Materials with ultralong phosphorescence have wide-ranging application prospects in biological imaging, light-emitting devices, and anti-counterfeiting. Usually, molecular phosphorescence is significantly quenched with increasing temperature, rendering it difficult to achieve high-efficiency and ultralong room temperature phosphorescence. Herein, we spearhead this challenging effort to design thermal-quenching resistant phosphorescent materials based on an effective intermediate energy buffer and energy transfer route. Co-crystallized assembly of zero-dimensional metal halide organic-inorganic hybrids enables ultralong room temperature phosphorescence of (Ph4P)2Cd2Br6 that maintains luminescent stability across a wide temperature range from 100 to 320 K (ΔT = 220 °C) with the room temperature phosphorescence quantum yield of 62.79% and lifetime of 37.85 ms, which exceeds those of other state-of-the-art systems. Therefore, this work not only describes a design for thermal-quenching-resistant luminescent materials with high efficiency, but also demonstrates an effective way to obtain intelligent systems with long-lasting room temperature phosphorescence for optical storage and logic compilation applications.

Date: 2020
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DOI: 10.1038/s41467-020-18482-w

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