LONGi achieves new world record for p-type solar cell efficiency
20 Sep 2022

LONGi has announced a new world record conversion efficiency of 26.12% for its p-type
silicon heterojunction (HJT) cells. The record, validated in testing carried out by the
Institute for Solar Energy Research (ISFH) in Hamelin, Germany, was achieved on full-
size (M6, 274.3cm 2 ) gallium-doped p-type monocrystalline wafers and is the highest
record for p-type cell efficiency to date, further confirming the feasibility of low-cost HJT
mass production technology.

The cell efficiency is 0.65% higher than that of 25.47% released earlier this year,
demonstrating LONGi’s ongoing commitment to driving industrial progress via technical
innovation. The LONGi R&D team has enhanced the crystal pulling process in response
to increased demand for performance indicators for p-HJT wafers, such as resistivity and
lifespan. The efficiency of the cell has been significantly improved in terms of short-circuit
current (Isc), open-circuit voltage (Voc) and fill-factor (FF), with increases of 1.06%,
0.3%, and 1.1% respectively, due to continuous developments in interface passivation
and window layer micro crystallization processes. It should be noted that the
development process is similar to that for an n-type cell, fully demonstrating the
technology’s versatility and reliability.

As a world-leading solar technology company, LONGi has a long-term record of
delivering higher value to end users via continuous technological innovation,
consolidating the company’s leading position in new solar cell technology. In 2021 alone,
LONGi broke the world record for cell conversion efficiency seven times, with efficiencies
for n-type TOPCon, p-type TOPCon and n-type HJT cells reaching 25.21%, 25.19% and
26.30% respectively.

About LONGi

Founded in 2000, LONGi is committed to being the world’s leading solar technology
company, focusing on customer-driven value creation for full scenario energy