A coating-encapsulated thin-film solar cell and its forming method
A technology of solar cells and thin films, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of ethylene-tetrafluoroethylene copolymer films without heat sealing performance, poor component compatibility, and high technical requirements, and achieve fast and effective Encapsulation process, good product performance and simple process
Image
Examples
Embodiment 1
[0030] A method for forming a thin-film solar cell encapsulated by a paint, comprising the following steps:
[0031] (1) Spray the mixed powder of ETFE and PTFE (the mass ratio of ETFE and PTFE is 99:1) on the polycrystalline silicon thin film solar cell by electrostatic spraying process, and then put it into an oven at 250°C for plasticization to obtain astigmatism on the surface layers of solar cells;
[0032] (2) Spray ETFE powder on the solar cell with a light-scattering layer obtained in step (1) by electrostatic spraying process, then bake at 250° C. and cool to obtain a coating-encapsulated thin-film solar cell.
[0033] Results: The thickness of the encapsulation layer of the prepared coating-encapsulated thin-film solar cell product is 50 microns, and the thickness of the scattering layer is 10 microns. The properties are shown in Table 1.
Embodiment 2
[0035] A method for forming a thin-film solar cell encapsulated by a paint, comprising the following steps:
[0036] (1) Spray the mixed powder of ETFE and FEP (the mass ratio of ETFE and FEP is 95:5) on the polysilicon thin film solar cell by electrostatic spraying process, and then put it into an oven at 270°C for plasticization to obtain a surface with Solar cells in the light-scattering layer;
[0037] (2) The ETFE powder is sprayed on the solar cell with a light-scattering layer obtained in step (1) by an electrostatic spraying process, and then baked at 270° C. and then cooled to obtain a coating-encapsulated thin-film solar cell.
[0038] Results: The thickness of the encapsulation layer of the prepared coating-encapsulated thin-film solar cell product was 80 microns, and the thickness of the scattering layer was 20 microns. The properties are shown in Table 1.
Embodiment 3
[0040] A method for forming a thin-film solar cell encapsulated by a paint, comprising the following steps:
[0041] (1) The mixed powder of ETFE and FEP (the mass ratio of ETFE and FEP is 90:10) is sprayed on polycrystalline silicon thin film solar cells by electrostatic spraying process, and then put into an oven at 300°C for plasticization to obtain astigmatism on the surface layers of solar cells;
[0042] (2) Spray ETFE powder on the solar cell with a light-scattering layer on the surface obtained in step (1) by using an electrostatic spraying process, then bake at 300° C. and cool to obtain a coating-encapsulated thin-film solar cell.
[0043] Results: The thickness of the encapsulation layer of the prepared coating-encapsulated thin-film solar cell product is 100 microns, and the thickness of the scattering layer is 30 microns. The properties are shown in Table 1.
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Abstract
Description
Claims
Application Information
- IPC
- H01L31/048; H01L31/054
- CPC
- H01L31/0481; H01L31/054; Y02E10/52
- Inventors
- 孙洪阳; 邵春明