Toward High-Performance AlGaN-Based UV-B LEDs: Engineering of the Strain Relaxation Process
Chenshu Liu,
Jianxun Liu,
Yingnan Huang
et al.
Abstract:Strain management is the key to achieving highquality aluminum gallium nitride (AlGaN) materials for fabricating AlGaN-based ultraviolet-B (UV-B) light-emitting diodes (LEDs). In this work, a kinetic defect evolution model to capture the strain relaxation process for AlGaN growth of UV-B LEDs was demonstrated. The relaxation started from the inclination of threading dislocations (TDs) dominantly over the coexistence of TD inclination, surface roughening, misfit dislocation (MD) generation, enhanced phase separ… Show more
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