Patent ID: 9735311
Date: 2017-08-15
CPC Classifications: H01L,Y02E,Y02P

Claim:
1. A method for producing a semiconductor light receiving device, the method comprising the steps of: growing a stacked semiconductor layer on a principal surface of a substrate, the stacked semiconductor layer including a light-receiving layer having a super-lattice structure, the super-lattice structure including a first semiconductor layer and a second semiconductor layer that are stacked alternately; forming a mask on the stacked semiconductor layer; forming a mesa structure on the substrate by etching the stacked semiconductor layer using the mask so as to form a substrate product, the mesa structure having a side surface exposed in an atmosphere and an oxide layer containing oxygen and a constituent element of the super-lattice structure on the exposed side surface; forming a deposited layer on the oxide layer of the side surface of the mesa structure by supplying a silicon raw material, the deposited layer containing amorphous silicon generated from the silicon raw material; and after the step of forming the deposited layer, forming a passivation film on the deposited layer of the side surface of the mesa structure, wherein the first semiconductor layer contains gallium as a constituent element, the second semiconductor layer contains a material different from a material of the first semiconductor layer, and in the step of forming the deposited layer, the silicon raw material is supplied without supplying an oxygen raw material containing an oxygen element.