Inorganic nanostructures: Alloyed Cu2ZnSn(S1−xSex)4 wurtzite nanocrystals (10 nm in size) with a varying composition (x=0–1) were synthesized using a colloidal hot injection route. A photoluminescence (PL) emission study of these nanocrystals shows a compositionally tunable band-gap ranging between 0.9–1.4 eV that directly correlates to the sulfur-to-selenium ratio (see picture).
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