Pub Date : 2024-02-24DOI: 10.1142/s1793604724500097
Youxin Lou, Yuguo Yang, Zi Yang, Chaofeng Zhu, Haifeng Zhou, Ping Zhao, Xuping Wang
Given the growing interest in eco-friendly lighting solutions, the use of high-quality phosphors has become integral to the advancement of all-solid white light-emitting diodes (WLEDs). One novel phosphor, La3Ga5SiO:Mn (LGS), has been successfully synthesized via a high-temperature solid-state reaction. The crystal structure of LGS is classified as belonging to the trigonal phase, with a space group P321. The excitation spectrum exhibits a wide peak within the wavelength range of 280–440 nm. It emits a highly intense red light, with a peak emission occurring at 715 nm within the spectral range of 670–740 nm is attributed to the transition of Mn from 4A to 4T LGS:Mn demonstrates a favorable quantum efficiency of 16% when doped with a concentration of 0.25 mol% Mn. The decay curve of LGS:Mn exhibits a pattern of decreasing lifetime as the dopant concentration increases. Additionally, the LGS:Mn products demonstrate a CIE chromaticity of (0.688, 0.2644), which is located within the deep red light region. All the aforementioned findings support the potential application of LGS:Mn specimens in WLEDs, thereby contributing to the progress of environmentally friendly and energy-efficient lighting.
{"title":"Preparation and photoluminescence study of rare-earth-free red emitting La3Ga5SiO14:Mn4+phosphors","authors":"Youxin Lou, Yuguo Yang, Zi Yang, Chaofeng Zhu, Haifeng Zhou, Ping Zhao, Xuping Wang","doi":"10.1142/s1793604724500097","DOIUrl":"https://doi.org/10.1142/s1793604724500097","url":null,"abstract":"<p>Given the growing interest in eco-friendly lighting solutions, the use of high-quality phosphors has become integral to the advancement of all-solid white light-emitting diodes (WLEDs). One novel phosphor, La<sub>3</sub>Ga<sub>5</sub>SiO<span><math altimg=\"eq-00009.gif\" display=\"inline\" overflow=\"scroll\"><msub><mrow></mrow><mrow><mn>1</mn><mn>4</mn></mrow></msub></math></span><span></span>:Mn<span><math altimg=\"eq-00010.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> (LGS), has been successfully synthesized via a high-temperature solid-state reaction. The crystal structure of LGS is classified as belonging to the trigonal phase, with a space group P321. The excitation spectrum exhibits a wide peak within the wavelength range of 280–440 nm. It emits a highly intense red light, with a peak emission occurring at 715 nm within the spectral range of 670–740 nm is attributed to the transition of Mn<span><math altimg=\"eq-00011.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> from <sup>4</sup>A<span><math altimg=\"eq-00012.gif\" display=\"inline\" overflow=\"scroll\"><msub><mrow></mrow><mrow><mn>2</mn><mstyle><mtext mathvariant=\"normal\">g</mtext></mstyle></mrow></msub></math></span><span></span> to <sup>4</sup>T<span><math altimg=\"eq-00013.gif\" display=\"inline\" overflow=\"scroll\"><msub><mrow></mrow><mrow><mn>2</mn><mstyle><mtext mathvariant=\"normal\">g.</mtext></mstyle></mrow></msub></math></span><span></span> LGS:Mn<span><math altimg=\"eq-00014.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> demonstrates a favorable quantum efficiency of 16% when doped with a concentration of 0.25 mol% Mn. The decay curve of LGS:Mn<span><math altimg=\"eq-00015.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> exhibits a pattern of decreasing lifetime as the dopant concentration increases. Additionally, the LGS:Mn<span><math altimg=\"eq-00016.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> products demonstrate a CIE chromaticity of (0.688, 0.2644), which is located within the deep red light region. All the aforementioned findings support the potential application of LGS:Mn<span><math altimg=\"eq-00017.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>4</mn><mo stretchy=\"false\">+</mo></mrow></msup></math></span><span></span> specimens in WLEDs, thereby contributing to the progress of environmentally friendly and energy-efficient lighting.</p>","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140054051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-26DOI: 10.1142/s1793604724500085
Haotian Lu, Lei Wang
{"title":"Electrical Performance Study of Carbon-Based Memristor with Additional MXene Capping Layer","authors":"Haotian Lu, Lei Wang","doi":"10.1142/s1793604724500085","DOIUrl":"https://doi.org/10.1142/s1793604724500085","url":null,"abstract":"","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139595151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-12DOI: 10.1142/s1793604724500073
Zhiqian Song, Lei Jiang, Chao Gao, Qiwei Qiao, Chenggang Geng, Xiaodong Wang
{"title":"High performance electrode based on platinum nanoparticle-silicon nanowire nanohybrid and aptamer for detection of Escherichia coli","authors":"Zhiqian Song, Lei Jiang, Chao Gao, Qiwei Qiao, Chenggang Geng, Xiaodong Wang","doi":"10.1142/s1793604724500073","DOIUrl":"https://doi.org/10.1142/s1793604724500073","url":null,"abstract":"","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139625098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-15DOI: 10.1142/s1793604724510093
Hanfeng Zhu, Lin Zheng, X. Liao, Gang Li
{"title":"Surface modification of TiNb alloys by hydrothermal-precalcification treatment and its excellent in vitro osteogenic bioactivity","authors":"Hanfeng Zhu, Lin Zheng, X. Liao, Gang Li","doi":"10.1142/s1793604724510093","DOIUrl":"https://doi.org/10.1142/s1793604724510093","url":null,"abstract":"","PeriodicalId":12701,"journal":{"name":"Functional Materials Letters","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138970691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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