Size control and quantum confinement in Cu2ZnSnS4 nanocrystals |
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| Authors: | Khare Ankur Wills Andrew W Ammerman Lauren M Norris David J Aydil Eray S |
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| Institution: | Department of Chemical Engineering and Materials Science, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, USA. |
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| Abstract: | Starting with metal dithiocarbamate complexes, we synthesize colloidal Cu(2)ZnSnS(4) (CZTS) nanocrystals with diameters ranging from 2 to 7 nm. Structural and Raman scattering data confirm that CZTS is obtained rather than other possible material phases. The optical absorption spectra of nanocrystals with diameters less than 3 nm show a shift to higher energy due to quantum confinement. |
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