Broad-spectrum absorption black silicon solar cell structure and preparation method thereof
A solar cell and manufacturing method technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as non-absorption, and achieve the effects of offsetting low mobility and current carrying, avoiding open circuit voltage, and increasing photogenerated current.
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[0040] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.
[0041] The broad-spectrum absorbing black silicon solar cell structure provided by the present invention absorbs the penetrating infrared light through the black silicon layer on the back, and uses the impurity gradient field to separate the photogenerated electron-hole pairs generated therein and convert them into photocurrent. It solves the limitation that traditional silicon-based solar cells cannot absorb and convert the near-infrared solar spectrum with wavelengths above 1.1 microns, and can effectively improve the photoelectric conversion efficiency of silicon-based solar cells.
[0042] Such as figure 1 As shown, figure 1 It is a schematic diagram of the broad-spectrum absorption black silicon solar cell structure ...
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