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

Kwanhwi Park; Hong Jeong Yu; Won Keun Chung; Byung Jea Kim; Sung Hyun Kim

doi:10.1007/s10853-009-3641-2

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

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

* Honorary professors

Research output: Contribution to journal › Article › peer-review

44 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 language	English
Pages (from-to)	4315-4320
Number of pages	6
Journal	Journal of Materials Science
Volume	44
Issue number	16
DOIs	https://doi.org/10.1007/s10853-009-3641-2
Publication status	Published - 2009 Aug

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1007/s10853-009-3641-2

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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.",

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AU - Park, Kwanhwi

AU - Yu, Hong Jeong

AU - Chung, Won Keun

AU - Kim, Byung Jea

AU - Kim, Sung Hyun

PY - 2009/8

Y1 - 2009/8

N2 - 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.

AB - 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.

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

Abstract

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