Wu Xiangsheng, Xu Shaohua, Yao Wenlan, Dong Rongkang. FORMATION OF LENSES ON GaInAsP/InP LEDs[J]. Chinese Journal of Luminescence, 1985,6(2): 155-160DOI:
which emit the light in 0.96-1.67μm spectral range
have been used in optical communication. In this paper
we report the fabrication of 1.3μm GalnAsP/InP LED with lens using chemical etching in detail. This lensed LED improves the coupling efficiency and the external quantum efficiency. The InP substrates used were (001) oriented or other oriented n-InP single crystal slices (Sn-doped
n-7×10
17
-2×10
18
cm
-3
). The GalnAsP/InP DH wafers were obtained by successive LPE growths of 5μm thick n-type buffer layer
an undoped GalnAsP (A-1.3μm) active layer and 1 urn thick p-type (Zn-doped) confining layer.