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Synthesis and photoluminescence properties of aqueous CdWO(4) quantum dots with WO(6)(6-) luminescence center
Zhang, GX; Yang, SF; Li, Z; Zhang, L; Zhou, W; Zhang, HY; Shen, H; Wang, YX; Zhang, GX (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 JiaLuo Roud, Shanghai 201800, Peoples R China
2010
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume257Issue:1Pages:4
AbstractAqueous CdWO(4) QDs were synthesized by the reaction of CdCl(2) and Na(2)WO(4) in the presence of mercaptoacetic acid (TGA) as capping reagent. The crystal morphology, particle size and its distribution of as-prepared products were characterized by transmission electron microscopy (TEM, SAED) atomic force microscopy (AFM), high-resolution transmission electron microscopy (HRTEM), and photon correlation spectroscopy (PCS), respectively. Qualitative assays for functional groups on the QDs' surface were measured by fourier transform infrared spectroscopy (FTIR). Photoluminescence properties of QDs were studied by photoluminescence spectroscopy (PL). The results showed that the single QD with diameter of about 8 +/- 2 nm was single-crystal. The particle size distribution of QDs was normal. Infrared absorption bands of carboxylic group on the surface of CdWO(4) QDs were observed around 1610-1550 cm(-1) (non-symmetrical vibration of -COO(-)) and 1400 cm(-1) (symmetric vibration of C-O). With reaction-time going, PL peak position shifted from 498 to 549nm and intensity of PL increased first and then decreased. PL peak position of QDs was blue-shift compared with 570 nm WO(6)(6-) luminescence center of bulk CdWO(4). (C) 2010 Elsevier B.V. All rights reserved.
KeywordCdwo(4) Quantum Dots Photoluminescence Wo(6)(6-) Luminescence Center Synthesis Mechanism
Subject AreaChemistry ; Materials Science ; Physics
Indexed BySCI
Language英语
Funding Project应物所项目组
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/7074
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorZhang, GX (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 JiaLuo Roud, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Zhang, GX,Yang, SF,Li, Z,et al. Synthesis and photoluminescence properties of aqueous CdWO(4) quantum dots with WO(6)(6-) luminescence center[J]. APPLIED SURFACE SCIENCE,2010,257(1):4.
APA Zhang, GX.,Yang, SF.,Li, Z.,Zhang, L.,Zhou, W.,...&Zhang, GX .(2010).Synthesis and photoluminescence properties of aqueous CdWO(4) quantum dots with WO(6)(6-) luminescence center.APPLIED SURFACE SCIENCE,257(1),4.
MLA Zhang, GX,et al."Synthesis and photoluminescence properties of aqueous CdWO(4) quantum dots with WO(6)(6-) luminescence center".APPLIED SURFACE SCIENCE 257.1(2010):4.
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