Jinko claims 25.25% Efficiency with N-Type Cell while Longi achieved 25.21% Efficiency with P-Type (topcon) Cell

Jinko claims 25.25% Efficiency with N-Type Cell while Longi achieved 25.21% Efficiency with P-Type (topcon) Cell


JinkoSolar Claims ‘Record-Breaking’ New High Conversion Efficiency Of 25.25% For Large Area N-Type Monocrystalline Silicon Solar Cell.

Tier 1 Chinese solar module supplier JinkoSolar Holding Co., Ltd. has reported achieving a 25.25% power conversion efficiency for its large area N-type monocrystalline silicon solar cells, which it said is a new world record for large size passivated contact (TOPCon) solar cells.

The company says its claim has been independently confirmed by the National Institute of Metrology (NIM), China. Jinko’s management believes this breakthrough has paved the way for the mass production of the company’s N-type TOPCon solar cells.

The 25.25% is 0.35% points higher than its previous efficiency level reached for this cell type it reported in January 2021 which itself was a growth from 24.79% it announced in July 2020 (see JinkoSolar: 24.9% Efficiency Record For TOPCon Solar Cell).

“Material upgrades integrated into the cell process and fabrication on a practical size of 267.4cm2 of high quality monocrystalline Czochralski (CZ) silicon substrates allowed the Company to achieve 25.25% cell efficiency,” explained the company.

JinkoSolar shared it was able to achieve the increased efficiency using ultra-thin polysilicon, and incorporating several advanced technologies some of which included its in-house high quality N-type wafer, passivating contact, advanced diffusion system, surface passivation, metallization of crystalline solar cells and other innovative technologies.

During our 2-day Virtual Conference on Very High-Power Solar Modules held in mid-May 2021 as a SNEC Preview, JinkoSolar’s Product Manager Leo Cong said his company’s 610W Tiger Pro module had 22.3% efficiency and the company has over 800 MW capacity for its N-type module products (see Day 1: TaiyangNews Very High-Power Solar Modules Conference). The recoding of Cong’s conference presentation titled Tiger Pro 610W Module: Combination of Innovative HOT2.0 Technology & High Power provided background on Jinko’s n-type module technology (see recording here)

In April 2021, JinkoSolar’s peer LONGi reported 25.09% efficiency for its monocrystalline bifacial N-type TOPCon solar cell, confirmed by Germany’s ISFH (see LONGi Reports 25.09% N-Type TOPCon Cell Efficiency).

Source : Anu Bhambhani

2. Longi Solar

Longi achieves 25.21% efficiency for TOPCon solar cell

The Chinese module manufacturer said the result was confirmed by the Institute for Solar Energy Research in Hamelin, Germany.

Chinese PV module maker Longi announced it was able to improve the efficiency of its tunnel oxide passivated contact (TOPCon) solar cell by 0.12% in just one month.

According to the manufacturer, the Institute for Solar Energy Research in Hamelin (ISHF), Germany, has confirmed that the efficiency of its commercial-sized monocrystalline, n-type, bifacial product has been raised from 25.09% to 25.21%. No technical details were disclosed on how the result was achieved.

Longi also announced it achieved two more efficiency records.

It claimed to have reached a power conversion efficiency of 25.02% for a p-type monocrystalline bifacial TOPCon solar cell and explained it is the first time that a cell based on this technology surpasses the 25% barrier. Furthermore, it said to have achieved a 25.26% efficiency for a monocrystalline heterojunction solar cell.

The manufacturer added that both results were confirmed by the ISHF and did not give an explanation for the technical improvements.

“With the ambitious goals we have set for ourselves, our approach is to stay close to the essence of technology by selecting the best technical route, maximizing product performance potential and proactively ushering in the changes needed to achieve the technical transformation,” said Li Hua, head of the company’s Cell R&D Center.

Longi is currently the world’s biggest solar manufacturer, by market value and sales revenue, and shipped 24.5 GW of panels last year to generate revenue of RMB54.58 billion ($8.43 billion). At the turn of the year, the company boasted annual production capacities of 85 GW, 30 GW and 50 GW for its mono wafers, cells and panels, respectively.