Effect of heat-treatment on CdS and CdS/ZnS nanoparticles

Kwanhwi Park, Hong Jeong Yu, Won Keun Chung, Byung J. Kim, Sung Hyun Kim

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Mono-dispersed and spherical cadmium sulfide (CdS) nanoparticles and cadmium sulfide/zinc sulfide (CdS/ZnS) nanoparticles, 4-5 nm in diameter, were synthesized in a heptane-AOT-water microemulsion system. The heat treatment of CdS and CdS/ZnS nanoparticles was annealed at 570 °C under the air atmosphere. The heat-treated nanoparticles were of variable large sizes and had enhanced crystallinity. UV-Vis spectra of heat-treated CdS and CdS/ZnS nanoparticles revealed a flat shape similar to that of bulk CdS compounds. The difference between the PL emission bands of organic-coated nanoparticles and heat-treated nanoparticles was small. The PL emission energy of heat-treated nanoparticles was improved by about 2-3 times compared with that of organic-coated nanoparticles.

Original languageEnglish
Pages (from-to)4315-4320
Number of pages6
JournalJournal of Materials Science
Volume44
Issue number16
DOIs
Publication statusPublished - 2009 Aug 1

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Cadmium sulfide
Heat treatment
Nanoparticles
cadmium sulfide
Heptanes
Zinc sulfide
Microemulsions
Heptane
Hot Temperature
Water

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Effect of heat-treatment on CdS and CdS/ZnS nanoparticles. / Park, Kwanhwi; Yu, Hong Jeong; Chung, Won Keun; Kim, Byung J.; Kim, Sung Hyun.

In: Journal of Materials Science, Vol. 44, No. 16, 01.08.2009, p. 4315-4320.

Research output: Contribution to journalArticle

Park, Kwanhwi ; Yu, Hong Jeong ; Chung, Won Keun ; Kim, Byung J. ; Kim, Sung Hyun. / Effect of heat-treatment on CdS and CdS/ZnS nanoparticles. In: Journal of Materials Science. 2009 ; Vol. 44, No. 16. pp. 4315-4320.
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