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| Abstract |
CuInS2 (CIS) fluorescent nanocrystals (NCs) were obtained by heating an organic metal complex. The photoluminescence (PL) originated from the donor-acceptor, and the quantum yield (QY) was achieved at... 6%. Furthermore, we added some metal ions (Zn2+, Cd2+ or Ag+) by the post heat-treatment in the organic coordinating solvent in order to tune the PL wavelength of NCs. By this post treatment, the alteration of NCs structure was suggested, such as changing into an alloying and composite structure. In Zn-treated, the PL wavelength was widely tuned from 535 to 650 nm by alloying between CIS and ZnS. Moreover, PL intensity was increased with these structure alterations. In particular, the materials treated with Zn2+ or Cd2+ achieved respective QY of 25% and 40%.show more
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