Figure 10. The temperature dependence of the ideality factor, n: Open triangles stand for values obtained after the slope of ln J curves when we neglecting the series resistance Rs and open stars represent n as fitting parameter of I-V curves with Eq. (7) when neglecting the presence of Rs. where Rs0 and α are constants: Rs0 = 21.18 Ω and α = 3.85 x 10-3K-1. This decaying behavior indicates that Rs has some semiconducting properties.

From

Electric Properties of n-GaN: Effect of Different Contacts on the Electronic Conduction

S. Abdalla, F. Marzouki, S. Al-ameer, S. Turkestani

International Journal of Physics. 2013, 1(2), 41-48 doi:10.12691/ijp-1-2-3