General Strategy for the Growth of CsPbX3 (X = Cl, Br, I) Perovskite Nanosheets from the Assembly of Nanorods
CHEMISTRY OF MATERIALS(2018)
Abstract
Shape control is critical and offers an efficient way to tune the properties of nanocrystals (NCs). Here we present the growth of two-dimensional (2-D) all-inorganic CsPbX3 (X = Cl, Br, I) perovskite NCs through the assembly of corresponding 1-D nanorods (NRs) under solvothermal conditions. Both 2-D CsPbX3 perovskite nanoplatelets (NPLs) and nanosheets (NSs) with a wide lateral size range from similar to 400 nm to similar to 1 mu m and thickness of a few unit cells can be obtained by the control of the solvothermal reaction time. The present work provides a general strategy for rational fabrication of 2-D CsPbX 3 (X = Cl, Br, I) perovskite NCs without the assistance of anion exchange. The obtained fluorescent 2-D all-inorganic perovskite NCs have great potential in practical photovoltaic applications.
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Key words
perovskite nanosheets,cspbx<sub>3</sub>
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