Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires

Nicolas Chauvin (1) , Amaury Mavel (1, 2) , G. Patriarche (3) , Bruno Masenelli (1) , Michel Gendry (2) , D. Machon (4)

1 INL - S&N - INL - Spectroscopies et Nanomatériaux
2 INL - H&N - INL - Hétéroepitaxie et Nanostructures
3 LPN - Laboratoire de photonique et de nanostructures
4 ILM - Institut Lumière Matière [Villeurbanne]

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 αA = 88.2 ± 0.5 meV/GPa and αB = 89.3 ± 0.5 meV/GPa with a small sublinear term of βA = βB = −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.

Domaines: Micro et nanotechnologies/Microélectronique; Optique / photonique

Nicolas Chauvin, Amaury Mavel, G. Patriarche, Bruno Masenelli, Michel Gendry, et al.. Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires. Nano Letters, 2016, 16 (5), pp.2926-2930. ⟨10.1021/acs.nanolett.5b04646⟩. ⟨hal-01489142⟩