Method for preparing proton crystal
A photonic crystal and single crystal technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of low efficiency and high production cost, achieve the effects of less process steps, save resources, and improve production efficiency
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Embodiment 1
[0020] Example 1 Preparation of ZnO two-dimensional photonic crystal
[0021] Specific steps are as follows:
[0022] 1) First, the preparation of single-layer colloidal microspheres: the particle size of the colloidal microspheres used is 90nm-10μm, and the substrate used is a silicon wafer or a sapphire substrate with a ZnO single crystal substrate;
[0023] Method 1 (spin coating method) prepare colloidal microsphere aqueous solution (0.5% to 20% by volume) and methanol in an appropriate volume ratio (1:1 to 20), then drop this solution on the substrate, At a suitable rotating speed (100-3000 rpm), a regularly arranged single-layer colloidal microsphere film can be produced; or
[0024] Method 2 (self-assembly method) prepare colloidal microsphere aqueous solution (volume percent concentration 0.5%~20%) and ethanol by appropriate volume ratio (1: 1~20), then add the solution dropwise in the container filled with high-purity water, A single layer of colloidal microspheres ...
Embodiment 2
[0034] Example 2 Preparation of ZnO three-dimensional photonic crystal
[0035] Specific steps are as follows:
[0036] 1) Preparation of multilayer colloidal microspheres: the particle size of the colloidal microspheres used is 90nm to 10 μm, and the substrate used is a silicon wafer or a sapphire substrate with a ZnO single crystal substrate;
[0037]Method one (spin-coating method) is the same as method one in Example 1, but it is necessary to repeatedly repeat the single-layer preparation method to prepare multilayer colloidal microspheres, and the number of repetitions is proportional to the number of layers; or
[0038] Method 2 (self-assembly method) fill a container with a certain volume percentage of colloidal microsphere aqueous solution or ethanol (volume percentage concentration of 0.01% to 10%), then place the substrate vertically in the solution, and place the entire container on In a constant temperature and humidity environment, the temperature is 20-60 degree...
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