Light Guide Layer Thickness Optimization for Enhancement of the Light Extraction Efficiency of Ultraviolet Light–Emitting Diodes

Table 3 LEE Results for light guide layer thicknesses of 150–700 μm

H_LG (um)	Measured of Relative radiant flux
H_LG (um)	λ (nm)	Relative radiant flux (mW)	Radiant flux magnification
150	275	13.53	1
300	274	14.1	1.042
350	275	16.49	1.218
400	274	17.76	1.312
500	278	19.74	1.458
600	277	20.58	1.521
700	278	20.86	1.541