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arXiv · 2512.06780

Near-Infrared Light Emitting Metal Halides: Materials, Mechanisms, and Applications

Ying Liu·Francesco Di Stasio·Chenghao Bi·Jibin Zhang·Zhiguo Xia·Zhifeng Shi·Liberato Manna
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Abstract

Near-Infrared (NIR) light emitting metal halides are emerging as a new generation of optical materials owing to their appealing features, which include low-cost synthesis, solution processability and adjustable optical properties. NIR emitting perovskite-based light-emitting diodes (LEDs) have reached an external quantum efficiency (EQE) over 20% and a device stability of over 10,000 h. Such results have sparked an interest in exploring new NIR metal halide emitters. In this review, we summarize several different types of NIR-emitting metal halides, including lead/tin bromide/iodide perovskites, lanthanide ions doped/based metal halides, double perovskites, low dimensional hybrid and Bi3+/Sb3+/Cr3+ doped metal halides, and assess their recent advancements. The characteristics and mechanisms of narrow-band or broadband NIR luminescence in all these materials are discussed in detail. We also highlight the various applications of NIR-emitting metal halides and provide an outlook for the field.

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Ying Liu, Francesco Di Stasio, Chenghao Bi, Jibin Zhang, Zhiguo Xia, Zhifeng Shi, Liberato Manna. 2025-12-07. Near-Infrared Light Emitting Metal Halides: Materials, Mechanisms, and Applications. https://doi.org/10.1002/adma.202312482

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