Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires

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• 作者：Nicolas Chauvin ; Amaury Mavel ; Gilles Patriarche ; Bruno Masenelli ; Michel Gendry ; Denis Machon
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：May 11, 2016
• 年：2016
• 卷：16
• 期：5
• 页码：2926-2930
• 全文大小：311K
• 年卷期：0
• ISSN：1530-6992

文摘

The elastic properties of InP nanowires are investigated by photoluminescence measurements under hydrostatic pressure at room temperature and experimentally deduced values of the linear pressure coefficients are obtained. The pressure-induced energy shift of the A and B transitions yields a linear pressure coefficient of α_A = 88.2 ± 0.5 meV/GPa and α_B = 89.3 ± 0.5 meV/GPa with a small sublinear term of β_A = β_B = −2.7 ± 0.2 meV/GPa². Effective hydrostatic deformation potentials of −6.12 ± 0.04 and −6.2 ± 0.04 eV are derived from the results for the A and B transitions, respectively. A decrease of the integrated intensity is observed above 0.5 GPa and is interpreted as a carrier transfer from the first to the second conduction band of the wurtzite InP.