I have synthesized CdSe with green emission but the shell of ZnS couldn't formed. The procedure is cadmium oxide and Se dissolved in oliec acid with heating in the presence of paraffin liquid, then I added zinc acetate-oliec acid mixture at high temperature and finally Na2S-oliec acid injected to the above group. There is no change in color or red emission. What is the problem?
thank you.
You can use TOP-SILAR synthesis method as reported by Zhang group. In this method, they reached QY up to 95% by growing three monolayers of ZnS shell and even maintained after six monolayers of shell thickness.
Chem. Commun. 49, 6346–6348 (2013),
Amar Nath Yadav
Thank you for your response. TOPO Unfortunately not availble, thus I have used oliec acid procedure.
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