US 11,808,626 B2
Sensor and method for discriminating between wavelength regions using the sensor
Taimur Ahmed, Coburg (AU); Sumeet Walia, Docklands (AU); Madhu Bhaskaran, Docklands (AU); and Sharath Sriram, Docklands (AU)
Assigned to Royal Melbourne Institute of Technology, Melbourne (AU)
Appl. No. 17/254,670
Filed by Royal Melbourne Institute of Technology, Melbourne (AU)
PCT Filed Jun. 26, 2019, PCT No. PCT/AU2019/050662
§ 371(c)(1), (2) Date Dec. 21, 2020,
PCT Pub. No. WO2020/000037, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018902291 (AU), filed on Jun. 26, 2018.
Prior Publication US 2021/0223097 A1, Jul. 22, 2021
Int. Cl. G01J 1/42 (2006.01); H01L 31/0264 (2006.01); H01L 31/0392 (2006.01); H01L 31/09 (2006.01); H01L 31/18 (2006.01)
CPC G01J 1/429 (2013.01) [H01L 31/0264 (2013.01); H01L 31/0392 (2013.01); H01L 31/09 (2013.01); H01L 31/18 (2013.01); G01J 2001/4266 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sensor for discriminating between wavelength regions in an electromagnetic spectrum, comprising:
a substrate;
a sensing element supported on a surface of the substrate; and
at least one pair of terminal electrodes disposed on the substrate surface in mutually spaced apart and opposing relation, and in electrical contact with the sensing element, wherein the sensing element is responsive to electromagnetic radiation to yield a change in photocurrent measured between the terminal electrodes as a function of an intensity of the electromagnetic radiation impinging thereon, wherein a positive dependency on the intensity corresponds to a first wavelength region and a negative dependency on the intensity corresponds to a second wavelength region;
wherein the sensing element comprises at least one black phosphorus flake, wherein the black phosphorus flake has a lateral dimension that is greater than 1 μm.