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US06992320B2 Semiconductor optical device with quantum dots having internal tensile or compressive strain 有权
具有内部拉伸或压缩应变的量子点的半导体光学器件

Semiconductor optical device with quantum dots having internal tensile or compressive strain
摘要:
A semiconductor optical device having a substrate having a surface of a first semiconductor having a first lattice constant; and a semiconductor lamination layer formed on the substrate, the semiconductor lamination layer having an active layer which contains quantum dots of a first kind made of a second semiconductor having a second lattice constant in bulk state smaller than the first lattice constant. The active layer may contain quantum dots of a second kind made of a third semiconductor having a third lattice constant in bulk state larger than the first lattice constant. The quantum dots of the first and second kinds are preferably disposed alternately along the thickness direction between the barrier layers having the first lattice constant.
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