Luminescence polarization of ordered GaInP/InP islands

Håkanson, U.; Zwiller, V.; Johansson, M. K.-J.; Sass, T.; Samuelson, L.
January 2003
Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p627
Academic Journal
The luminescence polarization properties of GaInP islands have been investigated. The islands, which form during overgrowth of InP quantum dots, were studied using scanning tunneling luminescence (STL) and photoluminescence (PL). STL from these islands shows emission at an energy below the main emission peak of the bulk GaInP. The linear PL polarization anisotropy was measured at low temperature, for which the emission from the islands shows high polarization anisotropy. The intensity maximum for the emission occurs for light polarized parallel to the elongation of the islands. The observed linear PL polarization anisotropy indicates the presence of highly ordered domains of GaInP in the islands.


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