| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor laminate, a light receiving element and a sensor, which can improve sensitivity.SOLUTION: A semiconductor laminate 10 comprises base layers 20, 30, a quantum well structure 40 and a contact layer 50. The base layers 20, 30, the quantum well structure 40 and the contact layer 50 are arranged by lamination of this order. An impurity concentration of a region of the contact layer 50, which includes a first principal surface 50A which is a principal surface on the quantum well structure 40 side is lower than an impurity concentration of a region including a second principal surface 50B which is a principal surface on the side opposite to the first principal surface 50A.SELECTED DRAWING: Figure 1 |
