The Effect of Package Structure on the Light Extraction Efficiency of Near-Ultraviolet LED

Table 1

Radiation flux and electrooptical conversion efficiency of different package structures.

Package structures	Electric power (mW)	Radiation flux (mW)	EECL (%)	Peak wavelength (nm)
Bare chip	3224	1776	55.09	402.2
Package 1	3304	1183	35.80	401.8
Package 2	3294	1617	49.09	402.2
Package 3	3293	1223	37.14	401.5
Package 4	3252	1705	52.44	401.9
Package 5	3303	2206	66.83	401.4