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Table 3 Valence band barrier height for each PNP-AlGaN junction of LEDs N1, N2, N3, and N4

From: On the p-AlGaN/n-AlGaN/p-AlGaN Current Spreading Layer for AlGaN-based Deep Ultraviolet Light-Emitting Diodes

LEDs	N1	N2	N3	N4
φ₁ (eV)	0.208	0.208	0.209	0.210
φ₂ (eV)	–	0.210	0.210	0.210
φ₃ (eV)	–	–	0.213	0.211
φ₄ (eV)	–	–	–	0.236

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