MOCVD Overgrowth and Characterisation of Nonpolar GaN on Patterned Templates on Sapphire for Advanced III-nitride Optoelectronics

In this thesis, two kinds of novel overgrowth approaches to achieving high-quality non-polar III-nitrides have been presented, novel multiple-colour structures and non-polar InGaN/GaN LEDs based on the patterned templates have been obtained. Detailed investigation of structure and optical performance have been performed for further validation of our high quality and multiple-function patterned templates.