Thickness tunable Cu2ZnSnSe4nanosheets

Abstract

Quaternary Cu₂ZnSnSe₄ single crystalline nanosheets have been synthesized in a controlled manner with a convenient solvothermal approach by simply modifying the reaction conditions. The presence of ethylenediamine (En) plays a key role in the preparation of Cu₂ZnSnSe₄ nanosheets while the thickness of the as-prepared Cu₂ZnSnSe₄ nanosheets is strongly dependent on the amount of En. The formation mechanism of Cu₂ZnSnSe₄ nanosheets was discussed. The products were characterized using X-ray powder diffraction, Raman, energy dispersive X-ray spectrometry, transmission electron microscopy, scanning electron microscopy and UV-Vis spectrophotometry.