Absorption properties and Quantum Confinement of colloidal CdSe quantum dots

Authors

  • Do Thi Anh Thu Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VIETNAM | Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VIETNAM. Author
  • Phan Ngoc Hong Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VIETNAM. | Center for High Technology Development, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VIETNAM. Author
  • Le Duy Manh Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, VIETNAM. | Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, VIETNAM. Author
  • Le Anh Thi Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, VIETNAM. | Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, VIETNAM Author
  • Man Minh Tan Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VIETNAM. | Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, VIETNAM. | Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, VIETNAM Author

DOI:

https://doi.org/10.51316/jca.2021.103

Keywords:

Quantum dots, CdSe, optical properties, Diffraction spectra, Energy spacing

Abstract

We investigate the structural and optical properties of CdSe QDs synthesized by the hot-injection technique. High-resolution transmission electron microscopy (HRTEM) analysis reveal the size-dependent of the CdSe QDs. The first through fourth excited states determined from absorption measurements are compared with calculated quantum size levels in s- and p-symmetry. In particular, featureless absorption peaks of the second and third excited states from the first exciton appear in the differential absorption (DA) spectra. These measurements with quantitative analysis enable the estimate error to be derived from anisotropic properties caused by the crystal field.

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Published

30-01-2022

Issue

Vol. 10 No. 1S (2021): Special Issue 1

Section

Full Articles

How to Cite

Absorption properties and Quantum Confinement of colloidal CdSe quantum dots. (2022). Vietnam Journal of Catalysis and Adsorption, 10(1S), 117-120. https://doi.org/10.51316/jca.2021.103
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