Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 44, Pages 17598-17601Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja2078224
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Funding
- KAKENHI, JSPS [23245028, 20429, 22-55312, 21340084]
- Nanotechnology Network of MEXT
- Grants-in-Aid for Scientific Research [21340084, 10J55312, 23245028] Funding Source: KAKEN
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Ion exchange of ionic semiconductor nano-particles (NPs) is a facile Method for the synthesis Of type-II semiconductor. heterostructured NPs-with staggered alignment of band edges for photoelectric applications. Through consideration of the crystallographic orientation and strain at the heterointerface, well-designed heterostructures can be constructed through ion exchange reactions. Here we report the selective synthesis of anisotropically phase-segregated cadmium sulfide.(CdS)/cadmium telluride (CdTe) heterodimers via a novel anion exchange reaction of CdS NPs with an organic telluride precursor. The wurtzite-CdS/zinc blende-CdTe heterodimers in this study resulted from spontaneous phase segregation induced by the differences in the crystal structures of the two phases, accompanying a centrosymmetry breaking of the spherical CdS NPs. The CdS/CdTe heterodimers exhibited photoinduced spatial charge separation because of their staggered hand-edge alignment.
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