One-pot synthesis of Cu1.94S-CdS and Cu1.94S-Zn(x)Cd(1-x)S nanodisk heterostructures |
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Authors: | Regulacio Michelle D Ye Chen Lim Suo Hon Bosman Michel Polavarapu Lakshminarayana Koh Wei Ling Zhang Jie Xu Qing-Hua Han Ming-Yong |
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Affiliation: | Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602. |
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Abstract: | Nanodisk heterostructures consisting of monoclinic Cu(1.94)S and wurtzite CdS have been colloidally synthesized for the first time. Initially, hexagonal-shaped nanodisks of Cu(1.94)S were produced upon thermolysis of a copper complex in a solvent mixture of HDA and TOA at 250 °C. Rapid addition of Cd precursor to the reaction mixture resulted in the partial conversion of Cu(1.94)S into CdS, yielding Cu(1.94)S-CdS nanoheterostructures. The original morphology of the Cu(1.94)S nanodisks was conserved during the transformation. When Zn precursor was added together with the Cd precursor, Cu(1.94)S-Zn(x)Cd(1-x)S nanodisks were generated. These two-component nanostructures are potentially useful in the fabrication of heterojunction solar cells. |
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