LIGHT-EMITTING ELEMENT

PROBLEM TO BE SOLVED: To provide a light-emitting element which can suppress electrical cross talk between a light-emitting part and a light-receiving part unlike a monitoring-use light-receiving element integration type light-emitting element having a common electrode on its rear face.SOLUTION: A light-emitting element comprises: a light-emitting part M1 formed on a front face side of a semi-insulating substrate 12; and a light-receiving part M2 formed on the front face side, sharing a semiconductor layer with the light-emitting part M1, and receiving light coming from the light-emitting part M1 through the semiconductor layer in a crosswise direction. In the light-emitting element, anode electrodes 42 of the light-emitting part M1 and light-receiving part M2, and cathode electrodes 44 thereof are formed on the front face side so that they are separated from each other.SELECTED DRAWING: Figure 1 【課題】裏面に共通電極を有するモニタ受光素子一体型の発光素子と比較して、発光部と受光部との電気的なクロストークを抑制することが可能な発光素子を提供すること。【解決手段】半絶縁性基板１２の表面側に形成された発光部Ｍ１と、表面側に形成され、発光部Ｍ１と半導体層を共有し、発光部Ｍ１から半導体層を介して横方向に伝播する光を受光する受光部Ｍ２と、を備え、発光部Ｍ１と受光部Ｍ２のアノード電極４２同士及びカソード電極４４同士は、お互いに分離された状態で表面側に形成されている。【選択図】図１