Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires.

Nano letters

PubMedID: 27046672

Chauvin N, Mavel A, Patriarche G, Masenelli B, Gendry M, Machon D. Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires. Nano Lett. 2016;.
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 aA = 88. 2 ± 0. 5 meV/GPa and aB = 89. 3 ± 0. 5 meV/GPa with a small sublinear term of ßA = ßB = -2. 7 ± 0. 2 meV/GPa(2). 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.