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Charge-Sensitive Surface Optical Phonon in CdS Quantum Dots Studied by Resonant Raman Spectroscopy
Wu, Yongkuan; Jin, Shaoqing; Ye, Yun; Wang, Shengyang; Feng, Zhaochi; Li, Can
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2014-12-25
DOI10.1021/jp509862k
Volume118Issue:51Pages:30269-30273
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordCDS/ZNS CORE/SHELL NANOCRYSTALS ; SEMICONDUCTOR NANOCRYSTALS ; SIZE DEPENDENCE ; SCATTERING ; ELECTRON ; NANOWIRES ; ULTRAFAST ; MODE ; GAP ; NANOPARTICLES
AbstractThe probe of surface properties of quantum dots (QDs) is of great importance as the surface properties of QDs greatly influence their performance in photoelectronic devices and photocatalysis. In this work, resonant Raman spectroscopy was used to study the surface optical (SO) phonon of CdS QDs. It was found that the intensity of SO phonon peak of CdS QDs increased as the size of the QDs decreased, but the dielectric constant of the surrounding media, which showed striking impacts on SO phonon peak in previous publications, has no visible influence in our experiments. Meanwhile, the intensity of SO phonon peak changes obviously when the surface ligands of CdS QDs or the excitation power/wavelength is changed. Besides, the loading of platinum catalyst seriously weakens the intensity of SO phonon peak. These experimental results can be interpreted with a charge-sensitive surface optical phonon model.
Language英语
WOS IDWOS:000347360200095
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145704
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yongkuan,Jin, Shaoqing,Ye, Yun,et al. Charge-Sensitive Surface Optical Phonon in CdS Quantum Dots Studied by Resonant Raman Spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(51):30269-30273.
APA Wu, Yongkuan,Jin, Shaoqing,Ye, Yun,Wang, Shengyang,Feng, Zhaochi,&Li, Can.(2014).Charge-Sensitive Surface Optical Phonon in CdS Quantum Dots Studied by Resonant Raman Spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY C,118(51),30269-30273.
MLA Wu, Yongkuan,et al."Charge-Sensitive Surface Optical Phonon in CdS Quantum Dots Studied by Resonant Raman Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY C 118.51(2014):30269-30273.
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