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Preparation and Photoluminescence of ZnS:Mn2+/polystyrene Core-Shell Structures and ZnS:Mn2+ Hollow Spheres
Zhang Lixin,Zhang Ren,Wang Lin,Zhou Chunming,Jin Pu,Chen Qianwang*
Author NameAffiliationE-mail
Zhang Lixin Department of Chemistry,University of Science and Technology of China,Hefei 230026;Structure Research Laboratory, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026  
Zhang Ren Department of Chemistry,University of Science and Technology of China,Hefei 230026  
Wang Lin Department of Chemistry,University of Science and Technology of China,Hefei 230026  
Zhou Chunming Department of Chemistry,University of Science and Technology of China,Hefei 230026  
Jin Pu Department of Chemistry,University of Science and Technology of China,Hefei 230026  
Chen Qianwang* Department of Chemistry,University of Science and Technology of China,Hefei 230026;Structure Research Laboratory, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026 cqw@ustc.edu.cn 
Abstract:
ZnS:Mn2+ polystyrene (PS) core-shell structures and ZnS:Mn2+ hollow spheres were prepared by a sonoehemical deposition approach. Transmission electron micrograph (TEM) studies show that the PS surface is covered by a thin shell consisted of ZnS: Mn2+ nanoparticles with an average size of 9 nm. ZnS: Mn2+ hollow spheres were obtained by heating the core-shell particles in air at 500 ℃ to drive off PS. The photoluminescence spectrum for the emission band of Mn2+ peaked at 540 nm, and a 45 nm blue shift compared to that of corresponding bulk sample, was discussed based on the Mn-O octahedral distortion induced by shell structure.
Key words:  ZnS: Mn2 + , Core-shell, Hollow sphere
FundProject:
ZnS:Mn2+/聚苯乙烯核壳及ZnS:Mn2+中空球的制备和光谱性质
张立新,张韧,王琳,周春明,金浦,陈乾旺*
摘要:
采用超声化学沉积法制备了ZnS:Mn2+/聚苯乙烯核壳结构和ZnS:Mn2+空心球.产物分别用透射电镜、X射线衍射仪和光致发光谱进行了表征.透射电镜结果表明,在聚苯乙烯胶体微球表面覆盖了平均尺寸为9 nm的ZnS:Mn2+纳米颗粒,X射线衍射结果进一步验证了这个结论.将核壳粒子在500℃灼烧除去PS核后,可以得到空心的ZnS:Mn2+微球,Mn2+的发射谱的峰位在540nm,与体相材料相比,蓝移了45 nm,这可能是由于壳层结构引起Mn-O八面体畸变,进而导致能带结构变化引起的.
关键词:  ZnS:Mn2+  核壳结构  中空球
DOI:10.1088/1674-0068/18/4/609-613
分类号: