{"title":"大功率发光二极管用高热稳定性Sr3Ga2Sn1.5Si2.5O14:Eu3+红色荧光粉的制备及其光致发光性能","authors":"Huanyi Guo , Yuling Zheng , Tongna Shi , Zhiyu Qin , Guoying Zhao , Yufeng Liu , Ganghua Zhang , Dehua Wu , Langping Dong , Jingshan Hou , Yongzheng Fang","doi":"10.1016/j.omx.2023.100264","DOIUrl":null,"url":null,"abstract":"<div><p>A series of Sr<sub>3</sub>Ga<sub>2</sub>Sn<sub>1</sub><sub>·</sub><sub>5</sub>Si<sub>2</sub><sub>·</sub><sub>5</sub>O<sub>14</sub>:<em>x</em>Eu<sup>3+</sup> (SGSSO:<em>x</em>Eu<sup>3+</sup>) phosphors with excellent thermal stability were prepared by the solid-state reaction method. The phase and luminescence properties of the sample were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy, and photoluminescence (PL) spectra. Under the excitation of 395 nm, the SGSSO:Eu<sup>3+</sup> phosphor exhibits strong red emission at 618 nm, which is attributed to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition of the Eu<sup>3+</sup> ions. When monitoring the 618 nm emission peak, the excitation spectrum contains several excitation peaks with a maximum value of 395 nm, which is well matched with the commercial violet LED chips. In addition, the emission spectra of SGSSO:Eu<sup>3+</sup> at different temperatures have also been studied. Pleasantly, the luminous intensity of the SGSSO:Eu<sup>3+</sup> sample at 150 °C still maintains 80.2% of that at room temperature, demonstrating its good thermal stability and application potential in high-power LEDs. The mechanism for the high thermal stability of the as-prepared phosphor was also discussed. Moreover, the photoluminescence quantum yield of the optimized SGSSO:0.06Eu<sup>3+</sup> phosphor can reach 62.7%. Finally, a warm white LED device with high color rendering index and low color temperature was prepared using the prepared SGSSO:Eu<sup>3+</sup> phosphor as a red component, verifying the application potential of SGSSO:0.06Eu<sup>3+</sup> in LEDs.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Preparation and photoluminescence properties of high thermal stability Sr3Ga2Sn1.5Si2.5O14:Eu3+ red phosphors for high-power light-emitting diodes application\",\"authors\":\"Huanyi Guo , Yuling Zheng , Tongna Shi , Zhiyu Qin , Guoying Zhao , Yufeng Liu , Ganghua Zhang , Dehua Wu , Langping Dong , Jingshan Hou , Yongzheng Fang\",\"doi\":\"10.1016/j.omx.2023.100264\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A series of Sr<sub>3</sub>Ga<sub>2</sub>Sn<sub>1</sub><sub>·</sub><sub>5</sub>Si<sub>2</sub><sub>·</sub><sub>5</sub>O<sub>14</sub>:<em>x</em>Eu<sup>3+</sup> (SGSSO:<em>x</em>Eu<sup>3+</sup>) phosphors with excellent thermal stability were prepared by the solid-state reaction method. The phase and luminescence properties of the sample were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy, and photoluminescence (PL) spectra. Under the excitation of 395 nm, the SGSSO:Eu<sup>3+</sup> phosphor exhibits strong red emission at 618 nm, which is attributed to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition of the Eu<sup>3+</sup> ions. When monitoring the 618 nm emission peak, the excitation spectrum contains several excitation peaks with a maximum value of 395 nm, which is well matched with the commercial violet LED chips. In addition, the emission spectra of SGSSO:Eu<sup>3+</sup> at different temperatures have also been studied. Pleasantly, the luminous intensity of the SGSSO:Eu<sup>3+</sup> sample at 150 °C still maintains 80.2% of that at room temperature, demonstrating its good thermal stability and application potential in high-power LEDs. The mechanism for the high thermal stability of the as-prepared phosphor was also discussed. Moreover, the photoluminescence quantum yield of the optimized SGSSO:0.06Eu<sup>3+</sup> phosphor can reach 62.7%. Finally, a warm white LED device with high color rendering index and low color temperature was prepared using the prepared SGSSO:Eu<sup>3+</sup> phosphor as a red component, verifying the application potential of SGSSO:0.06Eu<sup>3+</sup> in LEDs.</p></div>\",\"PeriodicalId\":52192,\"journal\":{\"name\":\"Optical Materials: X\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-08-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optical Materials: X\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2590147823000384\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optical Materials: X","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590147823000384","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Engineering","Score":null,"Total":0}
Preparation and photoluminescence properties of high thermal stability Sr3Ga2Sn1.5Si2.5O14:Eu3+ red phosphors for high-power light-emitting diodes application
A series of Sr3Ga2Sn1·5Si2·5O14:xEu3+ (SGSSO:xEu3+) phosphors with excellent thermal stability were prepared by the solid-state reaction method. The phase and luminescence properties of the sample were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy, and photoluminescence (PL) spectra. Under the excitation of 395 nm, the SGSSO:Eu3+ phosphor exhibits strong red emission at 618 nm, which is attributed to the 5D0 → 7F2 transition of the Eu3+ ions. When monitoring the 618 nm emission peak, the excitation spectrum contains several excitation peaks with a maximum value of 395 nm, which is well matched with the commercial violet LED chips. In addition, the emission spectra of SGSSO:Eu3+ at different temperatures have also been studied. Pleasantly, the luminous intensity of the SGSSO:Eu3+ sample at 150 °C still maintains 80.2% of that at room temperature, demonstrating its good thermal stability and application potential in high-power LEDs. The mechanism for the high thermal stability of the as-prepared phosphor was also discussed. Moreover, the photoluminescence quantum yield of the optimized SGSSO:0.06Eu3+ phosphor can reach 62.7%. Finally, a warm white LED device with high color rendering index and low color temperature was prepared using the prepared SGSSO:Eu3+ phosphor as a red component, verifying the application potential of SGSSO:0.06Eu3+ in LEDs.