InAs quantum dot-based remote epitaxial structure, preparation method and application
An epitaxial structure and quantum dot technology, which is applied in the fields of final product manufacturing, sustainable manufacturing/processing, photovoltaic power generation, etc., can solve the problem of reducing battery short-circuit current and photoelectric conversion efficiency, low size and position distribution uniformity, and affecting quantum dot crystals. Quality and other issues, to achieve the effect of alleviating large tearing, reducing defect density, and inhibiting structural dissimilation
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[0030] Example 1
[0031] (1) Using highly doped n-type GaAs substrate as base material, crystal orientation is (100), Si doping concentration is 5.1×10 18 / cm 3 , The carrier mobility is 1336cm 2 / (vs). According to the order, use AR grade acetone, ethanol and ultrapure water for 5 minutes ultrasonic cleaning, then rinse with 6% hydrochloric acid for 3 minutes, and then rinse with deionized water.
[0032] (2) Graphene transfer: Graphene is a single-layer graphene grown on a copper substrate, and the preparation method is a conventional CVD method (refer to Dervishi E, Li Z, Watanabe F, et al. Large-scale graphene production by RF-cCVD method[J].Chemical Communications,2009(27):4061.), before the transfer, the graphene needs to be transferred to a 1mol / L ferric chloride solution, after the copper metal substrate is completely dissolved, use the PMMA companion sheet to remove the graphite The alkene is transferred in ultrapure water three times, each for 3 minutes, to achieve the ...
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[0037] Example 2
[0038] (1) Using highly doped n-type GaAs substrate as base material, crystal orientation is (001), Si doping concentration is 5.1×10 19 / cm 3 , The carrier mobility is 1600cm 2 / (vs). According to the order, use AR grade acetone, ethanol and ultrapure water for 5 minutes ultrasonic cleaning, then rinse with 6% hydrochloric acid for 3 minutes, and then rinse with deionized water.
[0039] (2) Graphene transfer: Graphene is a single-layer graphene grown on a copper substrate, and the preparation method is a conventional CVD method (refer to Dervishi E, Li Z, Watanabe F, et al. Large-scale graphene production by RF-cCVD method[J].Chemical Communications,2009(27):4061.), before the transfer, the graphene needs to be transferred to a 1mol / L ferric chloride solution, after the copper metal substrate is completely dissolved, use the PMMA companion sheet to remove the graphite The alkene is transferred in ultrapure water three times, each for 3 minutes, to achieve the ...
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