Method for improving appearance of ZnO transparent conductive film
A transparent conductive film and morphology technology, applied in the field of solar cells, can solve the problems of poor surface morphology and light trapping characteristics of ZnO films, and achieve the effects of easy operation, improved light trapping ability, and low cost
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Embodiment 1
[0021] The ultrasonic spray pyrolysis method was used directly on the glass substrate, zinc acetate was used as the Zn source, water and absolute ethanol were mixed at a ratio of 1:3 as the solvent, and zinc acetate was prepared into a 0.2 mol / L solution. Indium acetate was used as the source of doped indium. Add indium acetate to the zinc acetate solution according to In / Zn=1.5 at.% (atomic percentage), and then add glacial acetic acid to it according to the volume ratio of the zinc acetate solution to glacial acetic acid at 1:0.14. The growth temperature was 470°C. Air was used as the carrier gas, grown for 150 min, and the thickness of the obtained sample was 898 nm. The morphology and optical properties of the obtained ZnO thin film were as follows: Figure 4 , the surface morphology of the obtained ZnO film is relatively smooth, and the grain size and root mean square roughness are obviously smaller, and the scattering effect on light is weaker.
[0022] The surface mor...
Embodiment 2
[0024] Using ultrasonic spray pyrolysis directly on the glass substrate, using zinc acetate as the Zn source, mixing water and absolute ethanol at a ratio of 1:3 as a solvent, and preparing zinc acetate into a 0.2 mol / L solution. Indium acetate was used as the source of doped indium. Add indium acetate to the zinc acetate solution according to In / Zn=1 at.% (atomic percentage), and then add glacial acetic acid to it according to the volume ratio of the zinc acetate solution to glacial acetic acid at 1:0.18. The growth temperature was 470°C. Air was used as the carrier gas, grown for 150 min, and the thickness of the obtained sample was 879 nm. The morphology and optical properties of the obtained ZnO thin film were as follows: Figure 7 , the surface morphology of the obtained ZnO film is triangular block grains, but relatively flat.
[0025] The surface morphology of the glass substrate after being etched with 1% HF for 5 minutes is as follows: figure 2 shown. Afterwards,...
Embodiment 3
[0027] The ultrasonic spray pyrolysis method was used directly on the glass substrate, zinc acetate was used as the Zn source, water and absolute ethanol were mixed at a ratio of 1:3 as the solvent, and zinc acetate was prepared into a 0.2 mol / L solution. Indium acetate was used as the source of doped indium. Add indium acetate to the zinc acetate solution according to In / Zn=1.5 at.% (atomic percentage), and then add glacial acetic acid to it according to the volume ratio of the zinc acetate solution to glacial acetic acid at 1:0.14. The growth temperature was 470°C. Air was used as the carrier gas, grown for 150 min, and the thickness of the obtained sample was 898 nm. The morphology and optical properties of the obtained ZnO thin film were as follows: Figure 4 , the surface morphology of the obtained ZnO film is relatively smooth, and the grain size and root mean square roughness are obviously smaller, and the scattering effect on light is weaker.
[0028] The surface mor...
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