Graphene/indium phosphide photoelectric detector and preparation method thereof
A photodetector, indium phosphide technology, which is applied to circuits, electrical components, semiconductor devices, etc., can solve problems such as affecting the responsivity of light detection, achieve good light absorption and light detection response performance, is easy to implement, and has a simple preparation process Effect
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[0022] Example 1
[0023] 1) Immerse the p-type indium phosphide sheet sample in acetone and isopropanol solution for surface cleaning;
[0024] 2) Transfer the single-layer graphene to the cleaned indium phosphide sheet;
[0025] 3) Deposit 100nm gold electrode on graphene by thermal evaporation process to obtain graphene / indium phosphide photodetector.
[0026] Applying a voltage between two surface electrodes, by testing the current changes of the photodetector under different illumination, it can reflect its response to different spectra and light intensities. image 3 That is, when a voltage of 5V is applied to the photodetector made in this example, the current value change curve of the interval continuous test under no light and 1 standard sunlight, it can be seen that the photodetector made in this example is sensitive to light. High responsiveness.
Example Embodiment
[0027] Example 2
[0028] 1) Immerse n-type indium phosphide sheets in acetone and isopropanol solutions for surface cleaning;
[0029] 2) Transfer 10 layers of graphene to the cleaned indium phosphide sheet;
[0030] 3) A 200nm nickel / gold electrode is deposited on the graphene using a thermal evaporation process to obtain a graphene / indium phosphide photodetector.
Example Embodiment
[0031] Example 3
[0032] 1) Immerse n-type indium phosphide sheets in acetone and isopropanol solutions for surface cleaning;
[0033] 2) Transfer 3 layers of graphene to the cleaned indium phosphide sheet;
[0034] 3) Screen printing 500nm silver electrodes on graphene to obtain graphene / indium phosphide photodetectors.
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