Improved luminescence and thermal stability of semipolar (11-22) InGaN quantum dots

摘要

Semipolar (ll-22)-oriented InGaN/GaN quantum dots (QDs) emitting in the 380-620 nm spectral range were synthesized by plasma-assisted molecular-beam epitaxy. The influence of the growth temperature on the properties of InGaN QDs has been investigated by photoluminescence and transmission electron microscopy. Growth temperatures low enough to prevent indium desorption provide a favorable environment to semipolar plane (11-22) to enhance the internal quantum efficiency of InGaN/GaN nanostructures.