On September 1, the first batch of megawatt heterojunction high-efficiency components from Zhongnengchuang Base were shipped to overseas smoothly.
The heterojunction solar cell is a high-efficiency crystalline silicon solar cell structure, and is a hybrid solar cell prepared from a crystalline silicon substrate and an amorphous silicon thin film, namely a layer of non-doped (intrinsic) hydrogenated amorphous silicon thin film is added between a P-type hydrogenated amorphous silicon substrate, an N-type hydrogenated amorphous silicon substrate and an N-type silicon substrate, and the amorphous silicon can better realize the passivation effect, And that open circuit voltage and the conversion efficiency are improve.
The heterojunction solar cell has a unique structure design, wherein the top contact layer is made of amorphous silicon or microcrystalline silicon materials, and the bottom contact layer is made of monocrystalline silicon or polycrystalline silicon materials. The structure enables the heterojunction solar cell to utilize the energy band structures of two different materials, thereby enlarging the wavelength range of the absorbed light and improving the light absorption efficiency. In addition, due to the friendly interface and high carrier mobility of the heterojunction cell, it has higher short-circuit current and open-circuit voltage, thus surpassing the traditional PERC cell and TOPCon cell in conversion efficiency.
& nbsp; Zhongnengchuang's non-main grid technology achieves shorter transmission distance, less shielding and low temperature silver paste consumption, while the anti-cracking energy and power generation are also improved. The non-main grid technology cancels the silver electrode of the main grid of the battery and replaces it with a welding strip, which can be directly interconnected with the fine grid to collect the current of the fine grid. On the one hand, this technology can effectively reduce silver consumption. On the other hand, compared with the diameter of 0.2-0.4 mm of the MBB module solder strip, the diameter of the 0BB solder strip is 0.2 mm, the shading area is smaller, and the current transmission distance is shorter, so that the power loss can be reduced, and the power generation efficiency can be improved. Zhongnengchuang has really solved the problem of reducing silver and silicon in heterojunction, reducing cost and improving efficiency. The mass production and overseas shipment
of heterojunction modules represents that Zhongnengchuang has opened the door to the world, and is constantly making the world recognize the brand of Zhongnengchuang with leading technology. Let's wait and see the broader prospects that heterojunction technology brings to mankind!
Zhongnengchuang is a technology company focusing on scenarios such as heterojunction and photovoltaic building integration . The company's nuclear team ranks among the top three listed companies in the world, and its technical team was born out of the National 863 Program and has been working in heterojunction for many years. The company always regards quality, low carbon value and new change as its orientation. We have been rapidly applying new technologies and processes to mass production, making important progress in cost control and efficient product innovation. Zhongnengchuang's business footprint covers many regions and countries around the world, and is continuously shipping to Asia, Southeast Asia, Europe and other regions.
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