QQ客服 官方微博 反馈留言

浏览/检索结果: 共2条，第1-2条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 The surface passivation on the optical and surface properties of InP 会议论文 12th China International Nanoscience and Technology Symposium, and the Nano-Products Exposition, CINSTS 2013, October 27, 2013 - October 31, 2013, Chengdu, China Gao X.; Wei Z. P.; Fang D.; Zhao H. F.; Fang X.; Tian S. S.; Tang J. L.; Du P.; Chu X. Y.; Li J. H.; Fang F.; Wang X. H. 收藏  |  浏览/下载：19/0  |  提交时间：2015/04/27 Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE) 会议论文 Yang J.; Cao J.; Yang L.; Zhang Y.; Wang Y.; Liu X.; Wang D.; Wei M.; Gao M.; Lang J. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In this paper  we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs  ZnO QDs  and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm  6 nm  and 22 nm  respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites  the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components  respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature  respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.