Patent ID: 9012960
Filing Date: 2015-04-21
Classification: H01L

Abstract:
1. A monolithic photo detector disposed in a substrate, the monolithic photo detector comprising: a doped impurity region disposed in the substrate or on a major surface of the substrate, wherein the doped impurity region is configured to receive a first voltage; a gate disposed over and spaced from the major surface of the substrate with an insulator and laterally disposed apart from and on a first side of the doped impurity region, wherein the gate is configured to receive a second voltage; a contact region, disposed in the substrate or on the major surface of the substrate and laterally disposed apart from and on the first side of the doped impurity region further removed from the first side of the doped impurity region than the gate, wherein the contact region is configured to receive a third voltage; and a light absorbing region disposed in the substrate or on the major surface of the substrate and laterally disposed apart from and on the first side of the doped impurity region between the gate and the contact region, wherein the light absorbing region includes at least one material in which, in response to light incident thereon, carrier pairs of opposite charge are generated, each carrier pair including a first type carrier and a second type carrier; wherein, in response to light incident on the light absorbing region,