Photoluminescence enhancement of InGaN core-shell nanowires via wet chemical treatment

It has been revealed that removing the shell of spontaneously formed InGaN nanowires increases the amplitude and narrows their emission spectrum. It has been established that radiative recombination dominates in the nanowires. And the dependence of the integrated photoluminescence intensity on the pump power for nanowires after etching is superlinear in comparison with the initial ones.