Catalyst-Assisted Solution–Liquid–Solid
Synthesis of CdS/CuInSe2 and CuInTe2/CuInSe2 Nanorod Heterostructures
Posted on 2018-12-07 - 21:21
Axial
nanowire heterostructures composed of cadmium sulfide (CdS)/copper
indium diselenide (CuInSe2) and copper indium telluride
(CuInTe2)/copper indium diselenide (CuInSe2)
were synthesized by a solution–liquid–solid (SLS) method
with the catalyzer of bismuth nanocrystals. Electron microscopy and
diffraction studies show CuInTe2 and CuInSe2 segments growing along the [112] direction with a clear epitaxial
interface between them. In CdS/CuInSe2 nanorod heterostructures,
CuInSe2 and CdS segments grow along the [112] and [111]
direction, respectively, with an obvious epitaxial interface between
them. Energy-dispersive X-ray spectrometry demonstrates the alloy-free
composition modulation in two nanorod heterostructures. In CuInTe2/CuInSe2 nanorod heterostructures, Te and Se are
localized in CuInTe2 and CuInSe2 segments, respectively.
Cu/In/Se and Cd/S are localized in the CuInSe2 and CdS
sections of the CdS/CuInSe2 nanorod heterostructures. This
research confirms that the SLS mechanism provides a general alternate
technique to prepare multicomponent axial 1D heterostructures that
have been difficult to generate by using either catalyst-free solution-phase
synthesis or vapor–liquid–solid growth.
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Jia, Guanwei; Du, Jiang (2018). Catalyst-Assisted Solution–Liquid–Solid
Synthesis of CdS/CuInSe2 and CuInTe2/CuInSe2 Nanorod Heterostructures. ACS Publications. Collection. https://doi.org/10.1021/acs.inorgchem.8b02870
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