Removing method for residual liquid on back of tellurium-cadmium-mercury liquid phase epitaxial thin film
A technology of liquid phase epitaxy and epitaxial thin film, which is applied in the direction of liquid phase epitaxy layer growth, chemical instruments and methods, crystal growth, etc., and can solve the problems of yield reduction and other problems
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[0015] See below in conjunction with accompanying drawing to the concrete implementation flow process of the present invention figure 1 To elaborate further:
[0016] 1. The uniform glue mainly plays the role of protecting the surface of the epitaxial film. In this treatment method, the process of evenly gluing with thin glue is adopted twice. The speed is 200 for the first 3 seconds, and 2000 rpm for the next 30 seconds.
[0017] 2. The aqua regia corrosion mainly plays the role of partially crisping and loosening the residual liquid on the back of the epitaxial film and partially removing the residual liquid. Due to the traditional CdZnTe polishing technology, it is easy to throw the epitaxial film of the residual liquid on the back under high pressure, but the residual liquid on the back cannot be removed when the pressure is small. Therefore, aqua regia corrosion is the core process of this invention.
[0018] 3. The mercury cadmium telluride epitaxial layer on the sur...
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