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M. SHARMA1,* , S. KUMAR2, O. P. PANDEY1
We report the synthesis of luminescent nanoparticles of Zinc Sulfide (ZnS) with and without mercaptoethanol as a capping agent. Nanoparticles of ZnS are prepared by a co-precipitation method. These nanoparticles are stabilized using organic polymer 2-mercaptoethanol. The change in optical and morphological properties of ZnS nanoparticles is observed by using organic capping agent. The most probable distribution of nanoparticles in case of mercaptoethanol 2% are of range 13.2– 19.8nm in diameter and 6.6-19.8nm in case of mercaptoethanol 4% as seen from TEM. The primary crystallites size is 1.9nm in case of mercaptoethanol capped nanostrucures and 2.2nm for uncapped nanostructures for 111 planes that was estimated from the X-ray diffraction patterns. Band gap measurements are done by UV- visible spectrophotometer. UV visible spectro-fluorometer shows emission and excitation spectra of capped as well as uncapped ZnS nanostructures. It is found that Band gap increases by introducing capping material. Photoluminescence studies show that emission intensity increases for capped sample.
2-mercaptoethanol, Capping, Uncapped, Excitation, Emission.
M. SHARMA, S. KUMAR, O. P. PANDEY, Studies of 2 - mercaptoethanol passivated ZnS core-shell nanoparticles, Optoelectronics and Advanced Materials - Rapid Communications, 2, 12, December 2008, pp.881-885 (2008).
Submitted at: Oct. 20, 2008
Accepted at: Dec. 4, 2008
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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