source:Industry News
release time:2022-11-04
Hits:0
Popular:
1. In today's life, solar energy products can be seen everywhere. People use solar energy and solar water heaters to cook. Solar energy products are everywhere. Of course, the most important is solar power generation, but the current technology can not make full use of solar power generation. In recent years, the essence of rapid development of photovoltaic industry chain is technology driven cost reduction and efficiency improvement. At present, the trend of single crystal has been established. The progress of efficiency improvement of p-type battery is slowing down, and the potential of efficiency improvement of n-type battery is huge. Looking into the future, we believe that the most anticipated change in the photovoltaic industry is that the battery chain will change from p-type battery to n-type battery. Among them, heterojunction battery, with its high efficiency and huge cost reduction potential, has become the next wave of the photovoltaic industry. Core advantage: high efficiency! The fundamental reason lies in the large band gap of heterostructure.
2. The conversion efficiency of solar cells can be expressed as the product of open circuit voltage, short circuit current and filling factor. The open circuit voltage depends on the strength of the built-in electric field, and finally on the band gap of the battery material itself. The band gap of heterojunction battery is 1.7-1.9 ev, which is much higher than 1.12 eV of crystalline silicon homogeneous battery. Therefore, the heterojunction battery has high open circuit voltage and high battery efficiency. Process: The core process is completely different from perc. The four core processes of heterojunction battery are cleaning and flocking, amorphous silicon film deposition, conductive film deposition, printing electrode and sintering.
3. The difference with perc process is:
(1) In the amorphous silicon film deposition process, PECVD or RPD was used to deposit the intrinsic hydrogenated amorphous silicon layer and p-type n-type hydrogenated amorphous silicon layer;
(2) PVD is used to deposit TCO conductive film in the coating process;
(3) The printing electrode is made of low-temperature silver paste;
(4) Low temperature sintering should be controlled during sintering. Cost: Equipment and consumables have great potential to reduce costs in the future. At present, the cost of heterojunction battery mainly comes from silicon (47%), slurry (24%), depreciation (6%) and target (5%).
Read recommendations:
lithium trolling motor battery wholesaler
HB-N1000 1000W Solar Portable Power Station with AC 100V-240V
The main category of power batteries.solar energy storage batteries
Last article:What causes the lithium battery to overheat?
Next article:Why does the low price of lithium iron phosphate make it more widely used?
related suggestion
solar power storage wholesale
2023-03-20dual purpose marine battery Vendor
2023-03-20lithium batteries for solar panels wholesaler
2023-04-07solar energy storage manufacturer
2023-03-20lifepo4 solar battery Processor
2023-04-07solar power storage wholesaler
2023-03-20trolling motor battery
2023-05-0848v lifepo4 battery
2023-05-08golf cart batteries for sale
2023-05-0812v 200ah
2023-05-08best golf cart batteries
2023-05-08lithium trolling motor battery
2023-05-08Home Appliance 3.7V Lithium Polymer Lipo Battery Pack
2023-02-1451.2V Modular Stacking Rack Mount Energy Storage System
2023-07-04Home Energy Storage System 51.2V 150Ah LiFePo4 Battery Pack
2023-06-1914650 Lithium Ion Battery for Electric Toothbrush
2023-02-14High Discharge 18650 21700 26650 Lithium Ion Battery Cell
2022-10-14Blind spots in knowledge of rate batteries.dual purpose marine battery
2023-10-12Monocrystalline silicon battery.lithium battery 12v 100ah
2023-07-07Li4ti5012 lithium battery.36 volt golf cart batteries
2023-07-17The advantages of 18650 cylindrical lithium battery
2022-10-12Analyze how to exit Lithium iron phosphate battery safely?best battery for home inverter
2023-06-26Prosperity of solar lithium battery
2023-02-25What is the material of the fast charging mobile phone battery that can charge 70% in 2 minutes?
2022-12-07High temperature and low temperature discharge solution
2023-02-10What parameters should I consider for lithium battery design?best solar generator for home backup
2023-05-09What happened when the distance between the lithium battery coating section often changes?
2023-02-06