中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 上海硅酸盐研究所
  3. 中国科学院上海硅酸盐研究所
Near-infrared-emitting colloidal Ag2S quantum dots exhibiting upconversion luminescence

文献类型：期刊论文

作者Zhang, Yanyan1; Jiang, Danyu2; Yang, Wei1; Wang, Dandan1; Zheng, Huiping1; Du, Yuansheng1; Li, Xi1; Li, Qiang1
刊名Superlattices and Microstructures
出版日期2017
卷号102页码:512-516
ISSN号07496036
DOI10.1016/j.spmi.2016.11.060
英文摘要Ag2S quantum dots (QDs) coated with thioglycolic acid (Ag2S QDs-TGA) have been synthesized in an organic solvent via a stepwise addition of reagents. When excited by a 980 nm laser, the near-infrared-emitting colloidal Ag2S QDs-TGA exhibit upconversion luminescence (UCL). The observed photoluminescence (PL) was attributed to the presence of ligand-modified Ag2S on the QD surfaces. Hence, upon dilution of the solution, the PL intensity initially increased before subsequently decreasing, accompanied by a blue shift in the PL spectra. The PL phenomena can be attributed to the increase in the amount of ligand-modified Ag2S on the QD surfaces upon dilution, which in turn affected the fluorescence resonance energy transfer (FRET) and re-emission of the surface energy level. The relations between the emission intensity of Ag2S QDs-TGA and the excitation power are investigated, and the results confirm that the UCL in Ag2S QDs-TGA can be ascribed to a two-photon-assisted absorption process via a real energy state. © 2016 Elsevier Ltd
源URL[http://ir.sic.ac.cn/handle/331005/25743]  
专题中国科学院上海硅酸盐研究所
作者单位1.School of Chemistry and Molecular Engineering, East China Normal University, Shanghai; 200062, China;
2.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
推荐引用方式
GB/T 7714		 Zhang, Yanyan,Jiang, Danyu,Yang, Wei,et al. Near-infrared-emitting colloidal Ag2S quantum dots exhibiting upconversion luminescence[J]. Superlattices and Microstructures,2017,102:512-516.
APA Zhang, Yanyan.,Jiang, Danyu.,Yang, Wei.,Wang, Dandan.,Zheng, Huiping.,...&Li, Qiang.(2017).Near-infrared-emitting colloidal Ag2S quantum dots exhibiting upconversion luminescence.Superlattices and Microstructures,102,512-516.
MLA Zhang, Yanyan,et al."Near-infrared-emitting colloidal Ag2S quantum dots exhibiting upconversion luminescence".Superlattices and Microstructures 102(2017):512-516.

入库方式： OAI收割

来源：上海硅酸盐研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。