Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

Hyun Ju Choi, Jun Kyu Yang, Sook Yoon, Hyung Ho Park

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)

Abstract

We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.

Original languageEnglish
Pages (from-to)92-95
Number of pages4
JournalApplied Surface Science
Volume244
Issue number1-4
DOIs
Publication statusPublished - 2005 May 15
Event12th International Conference on Solid Films and Surfaces - Hammatsu, Japan
Duration: 2004 Jun 212004 Jun 25

Bibliographical note

Funding Information:
The authors wish to acknowledge the financial support from KISTEP (M1-0214-00-0228). The experiments at PLS were supported in part by MOST and POSTECH.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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