Patent ID: 7244968

Claim:
A GaN-based semiconductor junction structure comprising: a buffer on a substrate, a lower p-type Al(x)Ga(y)In(z)N (0≦x≦1, 0≦y≦1, 0≦z≦1) layer, a p-type Al(x)Ga(y)In(z)N (0≦x≦1, 0≦y≦1, 0≦z≦1) layer which is doped at a very high concentration, a p-type In(a)Ga(b)Al(c)As(d)[N]P(e) (0≦a≦1, 0≦b≦1, 0≦c≦1, 0≦d≦1, 0≦e≦1) layer which is doped at a very high concentration, an n-type Al(x)Ga(y)In(z)N (0≦x≦1, 0≦y≦1, 0≦z≦1) layer which is doped at a very high concentration, and an n-type Al(x)Ga(y)In(z)N (0≦x≦1, 0≦y≦1, 0≦z≦1) layer.