Synthesis, Assembly, and Optical Properties of Shape- and Phase-Controlled ZnSe Nanostructures

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• 作者：Asit Baran Panda ; Somobrata Acharya ; Shlomo Efrima ; Yuval Golan
• 刊名：Langmuir
• 出版年：2007
• 出版时间：January 16, 2007
• 年：2007
• 卷：23
• 期：2
• 页码：765 - 770
• 全文大小：377K
• 年卷期：v.23,no.2(January 16, 2007)
• ISSN：1520-5827

文摘

Shape-, size-, and phase-controlled ZnSe nanostructures were synthesized by thermolysis of zinc acetate and selenoureausing liganding solvents of octadecylamine (ODA) and trioctylphosphineoxide (TOPO) at different molar ratios.Materials synthesized in pure ODA resulted in uniform ultranarrow nanorods and nanowires of 1.3 nm in diameter.Morphological change from nanowire to spherical particle of larger diameter occurs with increasing TOPO/ODA ratio.Variation of the TOPO content in the mixed solvent also allows control of the crystallographic phase of ZnSe (wurtziteor zinc blende). The conditions and mechanisms of shape and phase control are discussed. Ultra-high-density networksof the ordered wires are achieved using the Langmuir-Blodgett technique in a single step as an essential stage onthe route to ultra-high-density semiconductor nanocircuit fabrication.