Research Papers

Highly stable and efficient green luminescent CdS colloidal nanocrystals

[+] Author Affiliations
Morteza Sasani Ghamsari, Amir Hossein Sasani Ghamsari

Laser and Optics Research School, Nuclear Science and Technology Research Institute, Tehran 11155-3486, Iran

Wooje Han, Hyung-Ho Park

Yonsei University, Department of Materials Science and Engineering, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 120-749, Republic of Korea

J. Nanophoton. 10(2), 026017 (May 19, 2016). doi:10.1117/1.JNP.10.026017
History: Received February 20, 2016; Accepted April 26, 2016
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Abstract.  A chemical route was used to synthesize highly stable CdS colloidal nanocrystals. Different characterization techniques, such as UV-Vis, photoluminescence, and time-resolved photoluminescence spectroscopy, were used to study the optical properties of synthesized sample. A strong and narrow green emission peak centered at 532 nm with 40-nm full widths at half maximum and 57.2% quantum efficiency was recorded. The absorption cross section at the first absorption peak is about 11.69×1016  cm2 that has not been reported before. Variation in optical properties, such as emission peak intensity and full widths at half maximum of emission peak, was evaluated with various long-term measurements (after 1 year). Obtained results confirm that the prepared CdS nanocrystals can be employed as green source material.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Morteza Sasani Ghamsari ; Amir Hossein Sasani Ghamsari ; Wooje Han and Hyung-Ho Park
"Highly stable and efficient green luminescent CdS colloidal nanocrystals", J. Nanophoton. 10(2), 026017 (May 19, 2016). ; http://dx.doi.org/10.1117/1.JNP.10.026017


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