supported by the National Natural Science Foundation of China(Grant Nos.51577169 and 51777187);the National Key Research and Development Program of China(Grant No.2017YFB0402804)
The physical mechanisms of Ti/Al/Ni/Au ohmic contacts to AlGaN/GaN heterostructures by laser annealing and rapid thermal annealing are systematically investigated. The microstructures indicate that a better surface mo...
The Ti/Al/Ni/Au metals were deposited on undoped AlN films by electron beam evaporation. The influence of annealing temperature on the properties of contacts was investigated. When the annealing temperatures were betw...
supported by the National Basic Research Program of China(No.2010CB934104)
The multi-step rapid thermal annealing process of Ti/Al/Ni/Au can make good ohmic contacts with both low contact resistance and smooth surface morphology for AlGaN/GaN HEMTs.In this work,the mechanism of the multi-ste...
the Pre-Research Foundation from the National Ministries and Commissions(Nos.51323040118,513080302)~~
Ohmic contacts of Ti/Al/Ni/Au multi-layer metal on A10.27 Ga0.73N/GaN heterostructures were fabricated. Specific contact resistivities were measured by the linear transmission line method (LTLM) and the circular tra...