POLARIZED ELECTROLUMINESCENCE SPECTRA OF GAXIN1-XP/(AL0.6GA0.4)0.5IN0.5P QUANTUM-WELLS

被引:3
作者
BOUR, DP [1 ]
PAOLI, TL [1 ]
THORNTON, RL [1 ]
TREAT, DW [1 ]
PARK, YS [1 ]
ZORY, PS [1 ]
机构
[1] UNIV FLORIDA,DEPT ELECT ENGN,PHOTON RES LAB,GAINESVILLE,FL 32611
关键词
D O I
10.1063/1.109048
中图分类号
O59 [应用物理学];
学科分类号
摘要
Electroluminescence spectra of 80 angstrom GaxIn1-xP/(Al0.6Ga0.4)0.5In0.5P quantum wells (QWs), with x = 0.3, 0.4, 0.5, and 0.6, are examined. The polarization is anisotropic, and the light-hole (1h) and heavy-hole (hh) transitions are resolved at current densities between 1 A/cm2 and threshold. In the compressively strained (x = 0.3, 0.4) QWs, the hh is ground state and transverse electric-mode emission dominates. The Ih and hh band edges are reversed for the tensile-strained QW, however, and the emission is predominantly transverse magnetic. Near threshold, the bandfilling effect is most pronounced in the compressively strained QWs, suggesting a reduced in-plane hh effective mass. For the most highly compressed QW (x = 0.3, lambda = 707 nm), the threshold current density is 190 A/cm2.
引用
收藏
页码:3458 / 3460
页数:3
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