HJT battery represents the enterprise HJT battery industry: the upstream raw materials include silicon, silver paste, target and so on. The middle reaches are mainly used for the production and manufacture of batteries, and the lower reaches are applied to photovoltaic products such as photovoltaic power stations through photovoltaic modules. Central TCL, Maiwei Tongwei, Jinji High-tech Longji Green Energy, Jingke Energy Jiejia Weichuang, Aikang Technology Oriental Risheng and Huasheng Energy.
HJT photovoltaic cells in HJT industrial chain have attracted much attention in the market because of their high photoelectric conversion efficiency and good stability.
Upstream of HJT battery The upstream of HJT battery mainly includes silicon wafers, target materials, silver paste and other raw materials, and related enterprises include Longji, Jingke Energy, Jingao Solar Energy and He Ju New Materials.
Battery manufacturers in the middle and middle reaches of HJT battery include Longji, Jingke Energy and Tongwei, and equipment suppliers mainly include Maiwei, Junshi Energy and Jiejia Weichuang. The downstream photovoltaic modules and power generation products of HJT battery include Tongwei, Jingke Technology, Trina Solar, Astor and so on.
Industry Overview HJT is a hybrid solar cell technology formed by amorphous silicon and crystalline silicon. HJT's cost reduction and efficiency increase methods mainly include "three reductions and one increase"+efficiency increase. HJT's cost reduction and efficiency enhancement methods mainly include reducing the amount of silver paste, reducing the amount of silver in the main grid line, reducing the amount of silicon material, increasing light absorption and improving battery efficiency. HJT battery industry chain enterprises, equipment enterprises and manufacturing enterprises.
P-type battery |N-type battery The difference between P-type battery and N-type battery lies in the different preparation process of raw silicon wafer and battery: P-type silicon wafer is made by doping boron into silicon material. N-type silicon wafer is made by doping phosphorus in silicon material. The raw material of P-type battery is P-type silicon wafer, and the raw material of N-type battery is N-type silicon wafer. The preparation technologies of 1)P-type battery include traditional aluminum BSF and PERC technologies. 2)N-type battery preparation technologies include PERT/PERLTOPCon, HJT, IBC, etc. Replace or * * * win? Battery is the core component of photovoltaic power generation, and its technical route and process level directly affect the power generation efficiency and service life of photovoltaic modules.
HJT battery structure HJT battery is also called heterojunction battery, and the substrate type is N-type silicon wafer. Compared with PERC and TOPCon, HJT has four simple steps, namely, flocking cleaning, amorphous silicon film deposition, TCO film deposition and electrode metallization.
List of battery efficiency records
In June 2022, Longji HJT photovoltaic cell set a new record for the photoelectric conversion efficiency of silicon-based photovoltaic cells, reaching 26.8 1%.
HJT photovoltaic cell has higher photoelectric conversion efficiency, higher double-sided ratio, better temperature coefficient, and it is easier to realize wafer thinning, so it is considered as one of the mainstream technologies of photovoltaic cells in the future.
Who won, HJT or Topcon? HJT is a new technology that depends on increment, and Topcon is a new technology that is compatible with stock. In fact, HJT and Topcon are learning technology from each other now. * * * As we all know, HJT and Topcon will lead the post-PERC era.