2011年11月
Spontaneous Formation of Wurzite-CdS/Zinc Blende-CdTe Heterodimers through a Partial Anion Exchange Reaction
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
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- 巻
- 133
- 号
- 44
- 開始ページ
- 17598
- 終了ページ
- 17601
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/ja2078224
- 出版者・発行元
- AMER CHEMICAL SOC
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.
- リンク情報
- ID情報
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- DOI : 10.1021/ja2078224
- ISSN : 0002-7863
- eISSN : 1520-5126
- PubMed ID : 21972931
- Web of Science ID : WOS:000296312200021