Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires
|Title||Pressure-Dependent Photoluminescence Study of Wurtzite InP Nanowires|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Chauvin, N, Mavel, A, Patriarche, G, Masenelli, B, Gendry, M, Machon, D|
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 alpha(A) = 88.2 +/- 0.5 meV/GPa and alpha(B) = 89.3 +/- 0.5 meV/GPa with a small sublinear term of beta(A) = beta(B) = -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.