n⁺-GaN		Multiplication [N_A = 10¹⁶ (cm⁻³)]			Charge		9-steps Grading		Absorption
		p⁻ GaN	p⁻ Al_0.4Ga_0.6N	p⁻ AlN	p⁺-AlN		p⁻-Al_xG_1−xN (0.4 ≤ x ≤1)		p⁻ Al_0.4Ga_0.6N
$N_{D}^{+}$	W	W_m₃	W_m₂ (nm)	W_m₁ (nm)	N_A (10¹⁷ cm⁻³)	W_C (nm)	N_A	W_G	N_A	W_a
2 × 10¹⁸ cm⁻³	30 nm	250 nm	50	78	5	30	10¹⁶ cm⁻³	88 nm	10¹⁶ cm⁻³	200 nm
			50	74	4.6	35
			48	72	4	40
			46	70	3.6	45
			46	66	3.1	50