Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method

Liyana Mohd Lawi Ruhana, Taqiyuddin Mawardi Ayob Muhammad, Shahidan Radiman, Irman Abdul Rahman, Bohari Mohd. Yamin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

CdS/ZnO quantum dots (QDs) were prepared at a temperature of 293 K by the sol-gel method with Triethanolamine (TEA) as a capping agent. The effect of CdS/ZnO mixture ratio of 1:9, 1:1 and 9:1 on the optical absorption and fluorescence spectra were investigated by UV-Vis and Fluorescence spectroscopy. By increasing ZnO composition, a blue-shift of absorption edge and emission spectra were observed. The band gap for 1:9, 1:1 and 9:1 were found to be 4.13, 3.93 and 3.11 eV, respectively. The morphology of the CdS/ZnO QDs for each mixing ratio was obtained by transmission electron microscope (TEM). The size of the QDs was found to be in the range of 5-10 nm with some agglomerated particles.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages129-133
Number of pages5
Volume364
DOIs
Publication statusPublished - 2012
Event2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011 - Selangor
Duration: 4 Jul 20115 Jul 2011

Publication series

NameAdvanced Materials Research
Volume364
ISSN (Print)10226680

Other

Other2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011
CitySelangor
Period4/7/115/7/11

Fingerprint

Sol-gel process
Semiconductor quantum dots
Optical properties
Triethanolamine
Fluorescence spectroscopy
Ultraviolet spectroscopy
Light absorption
Energy gap
Electron microscopes
Fluorescence
Chemical analysis
Temperature

Keywords

  • CdS/ZnO
  • Optical properties
  • Quantum dots
  • Sol-gel

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ruhana, L. M. L., Muhammad, T. M. A., Radiman, S., Abdul Rahman, I., & Mohd. Yamin, B. (2012). Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method. In Advanced Materials Research (Vol. 364, pp. 129-133). (Advanced Materials Research; Vol. 364). https://doi.org/10.4028/www.scientific.net/AMR.364.129

Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method. / Ruhana, Liyana Mohd Lawi; Muhammad, Taqiyuddin Mawardi Ayob; Radiman, Shahidan; Abdul Rahman, Irman; Mohd. Yamin, Bohari.

Advanced Materials Research. Vol. 364 2012. p. 129-133 (Advanced Materials Research; Vol. 364).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ruhana, LML, Muhammad, TMA, Radiman, S, Abdul Rahman, I & Mohd. Yamin, B 2012, Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method. in Advanced Materials Research. vol. 364, Advanced Materials Research, vol. 364, pp. 129-133, 2011 International Conference on Nanomaterials, Synthesis and Characterization, ICNSC2011, Selangor, 4/7/11. https://doi.org/10.4028/www.scientific.net/AMR.364.129
Ruhana LML, Muhammad TMA, Radiman S, Abdul Rahman I, Mohd. Yamin B. Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method. In Advanced Materials Research. Vol. 364. 2012. p. 129-133. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.364.129
Ruhana, Liyana Mohd Lawi ; Muhammad, Taqiyuddin Mawardi Ayob ; Radiman, Shahidan ; Abdul Rahman, Irman ; Mohd. Yamin, Bohari. / Studies on optical properties of CdS/ZnO quantum dots prepared by sol-gel method. Advanced Materials Research. Vol. 364 2012. pp. 129-133 (Advanced Materials Research).
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