Device and method for maintaining performance of heterojunction solar cell and component for long time
A solar cell and heterojunction technology, applied in electrical components, climate sustainability, circuits, etc., can solve problems such as efficiency improvement and attenuation, and achieve the effects of avoiding efficiency loss, firm combination, and high conversion efficiency
Inactive Publication Date: 2019-12-10
福建钜能电力有限公司
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Problems solved by technology
In recent literature, it has been reported that the efficiency of N-type crystalline silicon heterojunction solar cells or their components will be improved under continuous light conditions, and the improvement effect is very significant. Another phenomenon is found, that is, after a period of natural light (non-continuous light) for cells or modules under continuous light, the efficiency improvement obtained by the cells or components under continuous natural light will decay back to the level before continuous light or even lower
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[0034] refer to Figure 2-Figure 4 , a method for maintaining the performance of heterojunction solar cells and modules for a long period of time, comprising the steps of:
[0035] The heterojunction solar cell 8 is placed in a cavity 5 with a nitrogen (N2) gas protection system, and the light source 1a and 1b with a spectral distribution range of 100-500nm wavelength are respectively configured on the top and bottom of the cavity 5. The heterojunction solar cell 8 is illuminated, and the illumination intensity is 0.5-5 suns. At the same time, the heterojunction solar cell 8 is heated by using the infrared heating systems 2a and 2b respectively arranged on the top and bottom of the cavity 5, and the heating temperature is 90°C. -200℃;
[0036] Keeping the heterojunction solar cell 8 under the light and heating conditions for a duration of 5-60 minutes;
[0037]Turn off the infrared heating systems 2a and 2b, use light sources 1c and 1d with a wavelength of 500-1200nm to perf...
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The invention discloses a device and a method for maintaining the performance of a heterojunction solar cell and component for a long time. The device comprises a cavity, a light source, an infrared heating system, an inert gas input system, a conveying device and a general controller. The light source is composed of an upper light source and a lower light source which are arranged on the top surface and the bottom surface of the cavity respectively. The infrared heating system is composed of an upper infrared heating system and a lower infrared heating system which are respectively arranged on the top surface and the bottom surface of the cavity. The inert gas input system is composed of an upper inert gas input system and a lower inert gas input system which are respectively arranged onthe top surface and the bottom surface of the cavity. The general controller is electrically connected with the light source, the infrared heating system, the inert gas input system and the conveyingdevice respectively. The improvement of efficiency obtained after continuous illumination of the heterojunction solar cell or component is maintained through the method of simultaneous heating by irradiation of short wave band or ultraviolet light, and the heterojunction solar cell or component still works continuously and efficiently under subsequent natural illumination.
Description
technical field [0001] The invention relates to the technical field of heterojunction solar cells, in particular to a device and method for maintaining the performance of heterojunction solar cells and modules for a long time. Background technique [0002] Under the general trend of reducing power generation costs, one of the cost reduction methods of the solar cell industry is to improve cell efficiency. As one of the candidates for high-efficiency solar cells, heterojunction solar cells have attracted more and more attention. However, there are still some performance problems in heterojunction solar cells. Here we will temporarily discuss the photoelectric conversion efficiency of its cells and the attenuation of its photovoltaic module efficiency. In recent literature, it has been reported that the efficiency of N-type crystalline silicon heterojunction solar cells or their components will be improved under continuous light conditions, and the improvement effect is very s...
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Login to View More IPC IPC(8): H01L31/18H01L31/072
CPCH01L31/072H01L31/186Y02E10/50Y02P70/50
Inventor 王洪喆罗骞张杰乔松
Owner 福建钜能电力有限公司