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学者姓名：林国明
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Abstract ：
Developing lead-free hybrid metal halides with stable and efficient white-light emission remains a critical challenge for next-generation optoelectronics. Here, we report a polar zinc-based organic-inorganic hybrid halide, [EMPA]2Zn3Br12 (EMPA = 5-[(4-ethylpiperazin-1-yl)methyl]pyridin-2-amine), which exhibits broadband white-light emission with a high color rendering index of 90 and high photoluminescence quantum yield of 43.9%. The material shows nonlinear optical properties with a measurable second-harmonic generation response. Unlike conventional hybrid halides, [EMPA]2Zn3Br12 demonstrates exceptional stability, retaining its structure and luminescent properties after 60 days of immersion in water and prolonged exposure to UV irradiation. Temperature-dependent photoluminescence measurements reveal that the material maintains its white-light emission from room temperature down to 260 K. Density functional theory calculations suggest that the broadband emission originates from multiple self-trapped exciton states, facilitated by Jahn-Teller distortions in the [ZnBr4]2- tetrahedra. Furthermore, a white-light-emitting diode fabricated using [EMPA]2Zn3Br12 as a single component white light emitter, demonstrating its potential for solid-state lighting. This study highlights [EMPA]2Zn3Br12 as a promising lead-free alternative for environmentally friendly high-performance white-light-emitting and optoelectronic applications.
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| GB/T 7714 | Wang, Yu-Yin , Hu, Ya-Jie , Sun, Rui-Yu et al. A Polar Zinc-Based Water-Resistant White-Light Emission Organic Inorganic Hybrid Metal Halide [J]. | INORGANIC CHEMISTRY , 2025 , 64 (29) : 15224-15233 . |
| MLA | Wang, Yu-Yin et al. "A Polar Zinc-Based Water-Resistant White-Light Emission Organic Inorganic Hybrid Metal Halide" . | INORGANIC CHEMISTRY 64 . 29 (2025) : 15224-15233 . |
| APA | Wang, Yu-Yin , Hu, Ya-Jie , Sun, Rui-Yu , Li, Yunyun , Zhang, Xiao-Wei , Zhang, Wen-Wen et al. A Polar Zinc-Based Water-Resistant White-Light Emission Organic Inorganic Hybrid Metal Halide . | INORGANIC CHEMISTRY , 2025 , 64 (29) , 15224-15233 . |
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