Thermal characterization of GaN heteroepitaxies using ultraviolet transient thermoreflectance
Liu Kang1, Zhao Jiwen2, Sun Huarui1, ‡, Guo Huaixin3, Dai Bing2, Zhu Jiaqi2
       

Room-temperature photoluminescence spectra of GaN-on-SiC and GaN-on-Si, and diamond-on-GaN (from the GaN side).