Zhishan Chen, Shaoan Zhang, Zhenzhang Li, Huacong Ye, Haoran Yan, Jialong Xu, Ling Gao, Yang Li, Shizhen Zhang
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Additionally, YGa<small><sub>1.5</sub></small>Al<small><sub>1.5</sub></small>(BO<small><sub>3</sub></small>)<small><sub>4</sub></small>:Cr<small><sup>3+</sup></small> exhibits a broad NIR emission peaking at 750 nm with a full width at half maximum of 135 nm and a high photoluminescence quantum yield (86%). As a proof-of-concept, we fabricated an NIR phosphor-converted light-emitting diode device that achieves an NIR output power of 59.67 mW with an input working current of 150 mA, demonstrating a photoelectric conversion efficiency of 13.6%. The utilization of this high-power NIR light-emitting diode device as a lighting source enables a penetration depth of up to 15 mm, demonstrating the potential applications of Cr<small><sup>3+</sup></small>-doped YGa<small><sub>1.5</sub></small>Al<small><sub>1.5</sub></small>(BO<small><sub>3</sub></small>)<small><sub>4</sub></small>:Cr<small><sup>3+</sup></small> phosphors for non-invasive detection of biological tissue.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":null,"pages":null},"PeriodicalIF":6.1000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermally Stable NIR Broad Emission of Cr3+ Doping Phosphor With a High NIR Output Power\",\"authors\":\"Zhishan Chen, Shaoan Zhang, Zhenzhang Li, Huacong Ye, Haoran Yan, Jialong Xu, Ling Gao, Yang Li, Shizhen Zhang\",\"doi\":\"10.1039/d4qi01728e\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The development of high-performance near-infrared (NIR) luminescent materials remains a significant challenge, particularly in enhancing thermal stability. 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引用次数: 0
摘要
开发高性能近红外(NIR)发光材料仍然是一项重大挑战,尤其是在提高热稳定性方面。在这里,我们观察到了 YGa1.5Al1.5(BO3)4:Cr3+ 荧光粉中的抗热淬效应,与室温相比,它在 423 K 和 483 K 时的发射强度分别达到 104% 和 101%。密度泛函理论计算证实,这种抗热淬火主要归因于热诱导的发射补偿,其原因是晶体缺陷处捕获了激发电子。此外,YGa1.5Al1.5(BO3)4:Cr3+ 在 750 纳米波长处显示出宽广的近红外发射峰值,半最大值全宽为 135 纳米波长,并具有很高的光致发光量子产率(86%)。作为概念验证,我们制作了一个近红外荧光粉转换发光二极管器件,在输入 150 mA 工作电流的情况下,其近红外输出功率达到 59.67 mW,光电转换效率为 13.6%。利用这种高功率近红外发光二极管器件作为照明光源,其穿透深度可达 15 毫米,这证明了掺杂 Cr3+ 的 YGa1.5Al1.5(BO3)4:Cr3+ 荧光粉在生物组织无创检测方面的潜在应用。
Thermally Stable NIR Broad Emission of Cr3+ Doping Phosphor With a High NIR Output Power
The development of high-performance near-infrared (NIR) luminescent materials remains a significant challenge, particularly in enhancing thermal stability. Herein, we observed an anti-thermal quenching effect in the YGa1.5Al1.5(BO3)4:Cr3+ phosphor, with its emission intensity reaching 104% at 423 K and 101% at 483 K compared to room temperature. This anti-thermal quenching is mainly attributed to thermal-induced emission compensation resulting from excited electrons trapped at crystal defects, as confirmed by density functional theory computation. Additionally, YGa1.5Al1.5(BO3)4:Cr3+ exhibits a broad NIR emission peaking at 750 nm with a full width at half maximum of 135 nm and a high photoluminescence quantum yield (86%). As a proof-of-concept, we fabricated an NIR phosphor-converted light-emitting diode device that achieves an NIR output power of 59.67 mW with an input working current of 150 mA, demonstrating a photoelectric conversion efficiency of 13.6%. The utilization of this high-power NIR light-emitting diode device as a lighting source enables a penetration depth of up to 15 mm, demonstrating the potential applications of Cr3+-doped YGa1.5Al1.5(BO3)4:Cr3+ phosphors for non-invasive detection of biological tissue.