Passivation emitter and backside technology is becoming a new generation of conventional technologies for solar photovoltaic cells. According to the statistics of the top ten applications and technology types of the 2017 Top Application Leaders provided by the industry organization's Asia Chemical Consulting, PERC has become an application leader. The main force of the project, accounting for up to 65%.
It is reported that the mature manufacturing process and lower capital investment make PERC battery capacity easy to expand. Coupled with the demand for high-power components in the downstream market, the PV industry is actively expanding its PERC battery production capacity. In 2017, the global solar cell production capacity was about 125 GW. PERC battery production capacity of 35GW. Newly built or upgraded P-type silicon solar cell production line in 2018, basically will use PERC technology.
Compared with the conventional battery production line, PERC technology only needs to increase the back passivation and laser slotting section, as well as the appropriate cooperation of the metallization process, can effectively improve the solar cell conversion efficiency. PERC technology makes the efficiency of P-type crystalline silicon solar cells To the point where it could not have been imagined before, JinkoSolar announced a record number of polycrystalline PERC batteries and single crystal PERC batteries in October 2017 and May 2018, respectively, with efficiencies of 22.04% and 23.95%, respectively.
The advantages of PERC technology are also reflected in its compatibility with other high-efficiency battery and component technologies, and the potential for continuous improvement of efficiency and power generation capabilities. PERC battery efficiency can be further improved through the combination of technologies such as multi-gate, selective emitter and TOPCon; Diamond wire cutting and black silicon technology can increase the cost-effectiveness of polycrystalline batteries. The double-sided PERC battery achieves double-sided power generation at almost no cost increase, achieving 10%-25% power generation gain on the system side, greatly enhancing PERC technology competitiveness and future development potential.
At the same time, the continuous improvement and localization of PERC production line equipment, as well as the continuous development of conductive pastes and metallization technology for PERC processes, are also conducive to the popularization and application of PERC technology, and the mass production of PERC single crystal and polycrystalline batteries. Efficiency will generally exceed 22% and 21% in the near future.
Asian Chemicals Consulting summarized the results and technology types of the top ten application leader bases in 2017. From the perspective of the total technology types, the single crystals accounted for 85% of the total, and polycrystals accounted for 15%; , PERC is undoubtedly the main force in the application of the leader project last year. In the 5GW application leader project, the PERC has a scalar quantity of 3274 MW, accounting for as high as 65%. Among them, the single crystal PERC winning bid is about 90%, and the polycrystal PERC accounts for About 10%.
In addition, unlike the previous leader project, double-sided products are becoming the new darling of the standard, with a total bid volume of approximately 2.6 GW, accounting for 52% of the total, and PERC's double-sided winning bid is approximately 1.45 GW, accounting for Nearly 30%. At present, many manufacturers, such as Tianhe, Longji Leye, Jingao and AiXu, have launched double-sided PERC products. It is foreseeable that double-sided PERC will become an important route for the subsequent development of PERC.
According to another report, the 4th PERC Solar Cell and Two-Dimensional Power Generation Forum will be held in Jiangsu Wuxi from June 28 to June 29, 2018. The conference will discuss the global and China PV industry outlook and PERC technology prospects, polycrystalline and single crystal PERC batteries. Competitive analysis and market share, PERC battery production line optimization and key technical equipment, double-sided PERC battery technology challenge, test standard and backside power generation optimization, etc. From Jinke, Tongwei, Tianhe, Chinese Academy of Sciences Institute of Electrical Engineering, Chinese Academy of Sciences Microelectronics The institute, experts from enterprises and institutions such as the National Grid Electric Power Academy will participate in the meeting and give a report.
