Politecnico Di Milano

Rockley Photonics Limited

Andrea Ballabio

Guomin Yu

Lorenzo Colace

Jacopo Frigerio

Andrea De Iacovo

Giovanni Isella

A double photodiode electromagnetic radiation sensor device including a substrate, a first integrated photodiode (PD), a second integrated photodiode (PD), and more than one metal contact. The substrate may be within a first semiconductor material that defines a first face and a second face. The PDmay include a first doped region extending to the second face and a 'n-' type doping. The PDmay further include a second doped region extending to the second face having a “p+” type doping. The PDmay include the first doped region, and a layer in a second semiconductor material placed on the second face in contact with the first doped region defining a third face. The PDmay yet further include a doped layer in the second semiconductor material having a “p+” type doping and overlapping the third face.

Double photodiode electromagnetic radiation sensor device

An electromagnetic radiation spectrum detection system including a sensor device and an electronic control and processing module. The sensor device may include two photodiodes. The sensor device may convert an incident electromagnetic radiation (EMR) into electrical current. The electronic control and processing module may store numerical calibration values representative of a responsivity matrix of the sensor device. The electronic control and processing module may selectively provide the sensor device with electrical control voltage values (V). The electronic control and processing module may process the values of detected electric currents (Iph) and the numerical calibration values to obtain spectrum information related to incident electromagnetic radiation spectrums. The electronic control and processing module may determine power spectral density of incident electromagnetic radiation.

Electromagnetic radiation spectrum detection system

Growing community of inventors

Milan, Italy

Andrea Ballabio