Yueshen Zhou, Dongsheng Yuan, Encarnación G. Víllora, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida and Kiyoshi Shimamura
{"title":"用于 X 射线闪烁的高密度 Nb:YTaO4 单晶体","authors":"Yueshen Zhou, Dongsheng Yuan, Encarnación G. Víllora, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida and Kiyoshi Shimamura","doi":"10.1039/D4CE00848K","DOIUrl":null,"url":null,"abstract":"<p >Environmental-friendly alternatives to the commercial scintillator CdWO<small><sub>4</sub></small>, which contains the toxic element Cd, are highly desired. As potential candidates, in this work, the scintillation characteristics of Nb:YTaO<small><sub>4</sub></small> transparent single-crystals grown from melt by the floating-zone technique are studied. It is found that the broad UV luminescence of YTaO<small><sub>4</sub></small> can be turned into a broad visible one by the partial substitution of Ta with only 2% Nb. Therefore, Nb incorporation promotes a better spectral matching to Si-photodiode detectors while the high stopping power of YTaO<small><sub>4</sub></small> is kept, being close to that of commercial CdWO<small><sub>4</sub></small>. The scintillation properties of pure YTaO<small><sub>4</sub></small>, with a light yield of 15 900 ph MeV<small><sup>−1</sup></small> and an afterglow of 0.008% after 40 ms, are comparable to those of CdWO<small><sub>4</sub></small>. The light yield weighed with a Si-photodiode reaches maximum values for 0.5 & 1% Nb:YTaO<small><sub>4</sub></small> crystals. An improvement in optical properties is expected by the growth of higher quality crystals by a flux-technique in the future.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 1","pages":" 81-89"},"PeriodicalIF":2.4000,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-density Nb:YTaO4 single crystals for X-ray scintillation\",\"authors\":\"Yueshen Zhou, Dongsheng Yuan, Encarnación G. Víllora, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida and Kiyoshi Shimamura\",\"doi\":\"10.1039/D4CE00848K\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Environmental-friendly alternatives to the commercial scintillator CdWO<small><sub>4</sub></small>, which contains the toxic element Cd, are highly desired. As potential candidates, in this work, the scintillation characteristics of Nb:YTaO<small><sub>4</sub></small> transparent single-crystals grown from melt by the floating-zone technique are studied. It is found that the broad UV luminescence of YTaO<small><sub>4</sub></small> can be turned into a broad visible one by the partial substitution of Ta with only 2% Nb. Therefore, Nb incorporation promotes a better spectral matching to Si-photodiode detectors while the high stopping power of YTaO<small><sub>4</sub></small> is kept, being close to that of commercial CdWO<small><sub>4</sub></small>. The scintillation properties of pure YTaO<small><sub>4</sub></small>, with a light yield of 15 900 ph MeV<small><sup>−1</sup></small> and an afterglow of 0.008% after 40 ms, are comparable to those of CdWO<small><sub>4</sub></small>. The light yield weighed with a Si-photodiode reaches maximum values for 0.5 & 1% Nb:YTaO<small><sub>4</sub></small> crystals. An improvement in optical properties is expected by the growth of higher quality crystals by a flux-technique in the future.</p>\",\"PeriodicalId\":70,\"journal\":{\"name\":\"CrystEngComm\",\"volume\":\" 1\",\"pages\":\" 81-89\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-11-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CrystEngComm\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ce/d4ce00848k\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CrystEngComm","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ce/d4ce00848k","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
High-density Nb:YTaO4 single crystals for X-ray scintillation
Environmental-friendly alternatives to the commercial scintillator CdWO4, which contains the toxic element Cd, are highly desired. As potential candidates, in this work, the scintillation characteristics of Nb:YTaO4 transparent single-crystals grown from melt by the floating-zone technique are studied. It is found that the broad UV luminescence of YTaO4 can be turned into a broad visible one by the partial substitution of Ta with only 2% Nb. Therefore, Nb incorporation promotes a better spectral matching to Si-photodiode detectors while the high stopping power of YTaO4 is kept, being close to that of commercial CdWO4. The scintillation properties of pure YTaO4, with a light yield of 15 900 ph MeV−1 and an afterglow of 0.008% after 40 ms, are comparable to those of CdWO4. The light yield weighed with a Si-photodiode reaches maximum values for 0.5 & 1% Nb:YTaO4 crystals. An improvement in optical properties is expected by the growth of higher quality crystals by a flux-technique in the future.
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