GRAPHENE OPTOELECTRONIC DETECTOR AND METHOD FOR DETECTING PHOTONIC AND ELECTROMAGNETIC ENERGY BY USING THE SAME

摘要

A graphene optoelectronic detector is disclosed, which comprises: an insulating substrate with a graphene layer disposed thereon; a first electrode disposed on the graphene layer or between the graphene layer and the insulating substrate; and a second electrode disposed on the graphene layer or between the graphene layer and the insulating substrate, wherein there is a predetermined distance between the first electrode and the second electrode, and the first electrode and the second electrode are at different electrical potentials, wherein a high-drift carrier moving region is disposed between the first electrode and the second electrode, and a low-drift carrier moving region is disposed outside the high-drift carrier moving region. In addition, the present invention further provides a method for detecting photons and electromagnetic energy using the aforementioned graphene detector.

主权项

1. A method for detecting photonic and electromagnetic energy, comprising the following steps:
providing a graphene optoelectronic detector, comprising:
an insulating substrate with a graphene layer disposed thereon;a first electrode disposed on the graphene layer or between the graphene layer and the insulating substrate; anda second electrode disposed on the graphene layer or between the graphene layer and the insulating substrate, wherein there is a predetermined distance between the first electrode and the second electrode, and the first electrode and the second electrode are at different electrical potentials,wherein a high-drift carrier moving region is disposed between the first electrode and the second electrode, and a low-drift carrier moving region is disposed outside the high-drift carrier moving region, applying photonic and electromagnetic energy onto the high-drift carrier moving region, wherein charge carriers in the high-drift carrier moving region scatter to the low-drift carrier moving region to obtain a decreased current value between the first electrode and the second electrode; and detecting and calculating the decreased current value to obtain an amount of the photonic and electromagnetic energy.