核壳型ZnS∶Cu/ZnS量子点的制备及发光性质

{ "defaultlang": "zh", "titlegroup": { "articletitle": [ { "lang": "zh", "data": [ { "name": "text", "data": "核壳型ZnS∶Cu/ZnS量子点的制备及发光性质" } ] }, { "lang": "en", "data": [ { "name": "text", "data": "Synthesis and Photoluminescent Properties of Core/Shell Structure ZnS∶Cu/ZnS Quantum Dots" } ] } ] }, "contribgroup": { "author": [ { "name": [], "stringName": [ { "lang": "zh", "surname": "田昕", "prefix": "" }, { "lang": "en", "surname": "TIAN Xin", "prefix": "" } ], "aff": [], "role": [ "first-author" ], "deceased": false }, { "name": [], "stringName": [ { "lang": "zh", "surname": "曹立新", "prefix": "" }, { "lang": "en", "surname": "CAO Li-xin", "prefix": "" } ], "aff": [], "role": [], "deceased": false }, { "name": [], "stringName": [ { "lang": "zh", "surname": "柳伟", "prefix": "" }, { "lang": "en", "surname": "LIU Wei", "prefix": "" } ], "aff": [], "role": [], "deceased": false }, { "name": [], "stringName": [ { "lang": "zh", "surname": "苏革", "prefix": "" }, { "lang": "en", "surname": "SU Ge", "prefix": "" } ], "aff": [], "role": [], "deceased": false }, { "name": [], "stringName": [ { "lang": "zh", "surname": "董博华", "prefix": "" }, { "lang": "en", "surname": "DONG Bo-hua", "prefix": "" } ], "aff": [], "role": [], "deceased": false } ], "aff": [ { "id": "1613348", "intro": [ { "lang": "zh", "label": "1", "text": " 中国海洋大学 材料科学与工程研究院, 山东 青岛 266100", "data": [ { "name": "text", "data": " 中国海洋大学 材料科学与工程研究院, 山东 青岛 266100" } ] }, { "lang": "en", "label": "1", "text": " Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China", "data": [ { "name": "text", "data": " Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China" } ] } ] } ] }, "abstracts": [ { "lang": "zh", "data": [ { "name": "p", "data": [ { "name": "text", "data": "本文采用水相合成方法制备了ZnS∶Cu量子点并进行了ZnS壳层修饰,研究了壳层厚度对ZnS∶Cu量子点光学性质的影响,采用TEM、XRD、PL、PLE和UV-Vis等测试方法对其进行了表征。实验结果表明,合成的ZnS∶Cu/ZnS量子点为立方闪锌矿,尺寸分布均匀呈球形,分散性良好,经过壳层修饰平均粒径由2 nm增加到3.2 nm。随着ZnS壳与ZnS核量的比的增加,量子点的PLE激发峰位置和UV-Vis吸收谱线出现红移,也说明了量子点的尺寸增大,证明ZnS在ZnS∶Cu量子点的表面生长,形成了核壳结构的ZnS∶Cu/ZnS量子点。随着壳层增厚,量子点与铜离子发光中心相关的发射峰强度先增大后减小,当壳核比" }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "s" } ] }, { "name": "text", "data": "/" }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "c" } ] }, { "name": "text", "data": "=2.5时,发光强度达到最大。" } ] } ] }, { "lang": "en", "data": [ { "name": "p", "data": [ { "name": "text", "data": "ZnS∶Cu quantum dots have been synthesised via a water-soluble route, then the ZnS shell coated for surface modification. The influence of shell thickness on the optical properties of ZnS∶Cu quantum dots has been studied. The samples were characterized by TEM, XRD, PL, PLE and UV-Vis. The results showed that the ZnS∶Cu/ZnS quantum dots were cubic sphalerite, uniform spherical-shaped and had a narrow size distribution. The average particals size increased from 2 nm to 3.2 nm after the shell modification. The PLE and UV-Vis spectra showed a gradual red shift with the shell thickening, which suggested that the quantum dots was growing with the " }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "s" } ] }, { "name": "text", "data": "/" }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "c" } ] }, { "name": "text", "data": " increased. It can proved that the ZnS shell growed on the ZnS∶Cu quantum dots surface and formed the ZnS∶Cu/ZnS core/shell structure quantum dots. The PL intensity related with Cu" }, { "name": "sup", "data": [ { "name": "text", "data": "2+" } ] }, { "name": "text", "data": " increased at the beginning and decreased with further growth of the ZnS shell. The intensity of emission peak achieved the maximum when " }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "s" } ] }, { "name": "text", "data": "/" }, { "name": "text", "data": "n" }, { "name": "sub", "data": [ { "name": "text", "data": "c" } ] }, { "name": "text", "data": "=2.5." } ] } ] } ], "keyword": [ { "lang": "zh", "data": [ [ { "name": "text", "data": "量子点" } ], [ { "name": "text", "data": "ZnS∶Cu" } ], [ { "name": "text", "data": "核壳结构" } ], [ { "name": "text", "data": "发光" } ] ] }, { "lang": "en", "data": [ [ { "name": "text", "data": "quantum dots" } ], [ { "name": "text", "data": "ZnS∶Cu" } ], [ { "name": "text", "data": "core/shell structure" } ], [ { "name": "text", "data": "luminescence" } ] ] } ], "highlights": [], "body": [], "footnote": [], "reflist": { "data": [ { "id": "ref1", "label": "1", "citation": [ { "lang": "zh", "text": [ { "name": "text", "data": "Gust A, Kruse C, Hommel D. 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