Studies on the electronic and vibrational states of colloidal CdSe/ZnS quantum dots under high pressures

C. T. Yuan, Y. C. Lin, Y. N. Chen, Q. L. Chiu, W. C. Chou, D. S. Chuu, W. H. Chang, H. S. Lin, R. C. Ruaan, C. M. Lin

研究成果: Article同行評審

18 引文 斯高帕斯(Scopus)

摘要

The electronic and vibrational states of colloidal core/shell CdSe/ZnS quantum dots are studied at room temperature by using high pressure optical measurements. Pressure-induced quadratic variations of lattice constants can be observed clearly from both photoluminescence (PL) and Raman spectra up to ∼7 GPa. This quadratic relationship is consistent with the theoretical prediction. The pressure coefficients of linear and quadratic terms are 32 meV GPa -1, -1 meV GPa-2 for PL and 4.2 cm-1 GPa -1, -0.1 cm-1 GPa-2 for Raman measurements, respectively.

原文English
文章編號185402
期刊Nanotechnology
18
發行號18
DOIs
出版狀態Published - 2007 5月 9

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 材料科學(全部)
  • 材料力學
  • 機械工業
  • 電氣與電子工程

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