Journal
LANGMUIR
Volume 26, Issue 24, Pages 19129-19135Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la103444h
Keywords
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Funding
- NSFC [21073071, 51025206, 10979001]
- National Basic Research Program of China [2011CB808200, 2007CB808000]
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In comparison to the previous lengthy approaches, we described a general and simple strategy for engineering the superlattice assembly of IV-VI semiconductor nanocrystals (NCs) with tunable sizes and morphologies. Not only the well-studied spherical NCs but also some special-shaped NCs, such as the quasi-cubic, cubic, truncated octahedral, and octahedral, could self-assemble into well-ordered patterns, as demonstrated in PbS, PbSe, and PbTe. These results extended our proposed model about the configuration of ligand chains in the superlattice assembly. This powerful capability of assembling superlattices was dominated by a heat-treatment process, providing a significant and extensive direction in the engineering of morphology-tunable NC superlattices.
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