Method for manufacturing intermediate P-type electrode of tunable resonant cavity enhanced detector
An enhanced, detector technology, used in circuits, lasers, electrical components, etc., can solve the problems of difficult corrosion process, decreased corrosion selection ratio, and increased production cost, so as to improve the corrosion selection ratio, reduce process difficulty and cost. , Good effect of P-type electrode contact
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0036] In the present invention, by rationally designing the material structure of the epitaxial wafer, the electrode contact layer is placed under the corrosion cut-off layer, and the corrosion cut-off layer adopts Al with a larger corrosion selection ratio. 0.5 Ga 0.5 As material, the electrode contact layer is made of GaAs material that can obtain higher P-type doping, and with two selective etching solutions, it solves the problem of making the intermediate P-type electrode.
[0037] Such as figure 1 as shown, figure 1 It is a flowchart of a method for making a P-type electrode in the middle of a tunable resonant cavity enhanced detector provided by the present invention, and the method includes:
[0038] A. Growth...
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