journal article·2024-01

Bulk‐Size and Highly Transparent Composite Phosphor for NIR Spectroscopy

Liangliang Zhang, Dandan Wang, Feng Liu, Hao Wu, Guohui Pan, Huajun Wu, Zhendong Hao, Jiahua Zhang

Advanced Optical Materials· Volume 12· Issue 3
Publisher page

Abstract

Abstract Near‐infrared (NIR) phosphors offer a novel luminescent solution for NIR spectroscopy, but their efficiency remains low. Herein, it is demonstrated that the high transparency of a phosphor improves its external quantum efficiency by developing a new inorganic–organic composite phosphor. The new bulk‐size and highly transparent composite phosphor is fabricated through layer‐by‐layer assembly of micron‐sized hexagonal LiSrAlF6:Cr3+ powder phosphor. The inline transparency of the final bulk phosphor can be controlled from 0% to 90.2% at a large solid concentration of ≈47 vol.%. With high transparency, the new bulk phosphor allows the phosphor‐conversion light‐emitting diode (pc‐LED) a 2.9 times improvement in efficiency. This paper inspires a feasible and low energy consumption method to facilitate next‐generation NIR pc‐LED phosphors.
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Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Advanced Photocatalysis Techniques · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Luminescence and Applications Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 3888 Eastern South Lake Road Changchun 130033 China

Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University Siping 136000 China

Key Laboratory for UV‐Emitting Materials and Technology of Ministry of Education Northeast Normal University Changchun 130024 China

Funding

National Natural Science Foundation of China · Youth Innovation Promotion Association · Changchun Science and Technology Planning Project

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