Bright Core鈥揝hell Semiconductor Quantum Wires

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• 作者：Yi-Hsin Liu ; Fudong Wang ; Jessica Hoy ; Virginia L. Wayman ; Lindsey K. Steinberg ; Richard A. Loomis ; William E. Buhro
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：November 14, 2012
• 年：2012
• 卷：134
• 期：45
• 页码：18797-18803
• 全文大小：517K
• 年卷期：v.134,no.45(November 14, 2012)
• ISSN：1520-5126

文摘

Colloidal CdTe quantum wires are reported having ensemble photoluminescence efficiencies as high as 25% under low excitation-power densities. High photoluminescence efficiencies are achieved by formation of a monolayer CdS shell on the CdTe quantum wires. Like other semiconductor nanowires, the CdTe quantum wires may contain frequent wurtzite鈥搝inc-blende structural alternations along their lengths. The present results demonstrate that the optical properties, emission-peak shape and photoluminescence efficiencies, are independent of the presence or absence of such structural alternations.