The world's largest wafer manufacturer for the solar industry, and cell and module maker LONGi Green Energy Technology has once again announced new world records, this time achieving 26.56% efficiency for its p-type heterojunction (HJT) and 26.09% for indium-free HJT cells.
The Chinese company said it achieved these efficiencies using its own M6 full-size monocrystalline gallium doped silicon wafers and self-developed 'mass production technology.' This, it says, further consolidates the foundation of industrialization of low-cost HJT cells.
It has reported an increase of 0.44% in p-type efficiency of 26.56% from 26.12% reached in September 2022 (see 26.12% Efficiency For P-Type HJT Solar Cell).
For the indium-free cell HJT efficiency of 26.09%, LONGi said it replaced traditional indium-based transparent conductive film with 'abundant, cheap, safe and environment friendly film materials' without giving many details.
"The successful research and development of high-efficiency indium-free HJT cells can effectively get rid of the dependence of large-scale mass production on indium resources, alleviate the industry's concerns about insufficient indium reserves, and provide a feasible solution for HJT cells to move towards TW-scale mass production," stated LONGi.
Germany's Institut für Solarenergieforschung GmbH (ISFH) has certified both these records of LONGi.
The development comes soon after the company created history by breaking 5-year-old world record silicon solar cell efficiency of Kaneka with its 26.81% efficient back contact cell (see LONGi Breaks Long-Time Silicon Solar Cell Record).
The company's Founder and President Li Zhenguo and Vice President, Central R&D Institute Dr. Xu Xixiang discussed the world record efficiency with TaiyangNews Managing Director Michael Schmela in an exclusive interview on day 3 of our High Efficiency Solar Technologies Conference (see Positive Outlook On Solar Demand & Technology Developments At TaiyangNews Event).
LONGi counts having broken the world record for cell conversion efficiency 12 times since April 2021 for n-type TOPCon, p-type TOPCon, n-type HJT cell, p-type HJT cell and indium-free HJT cell.