SEMICONDUCTOR LAMINATE, LIGHT RECEIVING ELEMENT AND SENSOR

• Main Authors: NISHIZUKA KOJI, SHIBATA KAORU, AKITA KATSUSHI, ARIKATA SUGURU, KYONO TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 23.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

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 【課題】感度の向上を可能とする半導体積層体、受光素子およびセンサを提供する。【解決手段】半導体積層体１０は、ベース層２０，３０と、量子井戸構造４０と、コンタクト層５０と、を備える。ベース層２０，３０、量子井戸構造４０およびコンタクト層５０は、この順に積層して配置される。コンタクト層５０の、量子井戸構造４０側の主面である第１主面５０Ａを含む領域の不純物濃度は、第１主面５０Ａとは反対側の主面である第２主面５０Ｂを含む領域の不純物濃度よりも低くなっている。【選択図】図１