LONGi announces 30.1% efficiency silicon-perovskite tandem solar cell

June 21, 2024
Facebook
Twitter
LinkedIn
Reddit
Email
LONGi headquarters
The record is certified by German research organisation Fraunhofer ISE. Image: LONGi Green Energy

Chinese module manufacturer LONGi has announced a commercial M6 size wafer-level silicon-perovskite tandem solar cell with 30.1% efficiency at Intersolar Europe 2024.

LONGi said the record conversion efficiency was certified by German research organisation Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE).

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

He Bo, R&D director of LONGi Central R&D Institute, said that LONGi’s R&D team had overcome two key challenges when developing the cell, including the preparation of large-area perovskite films in air and ultra-low-temperature metallisation.

He added that the new record represented a “milestone in the commercial viability” of the technology.

LONGi established the Central R&D Institute in 2012, which the company described as “the backbone of the company.” Over the past year, the company has invested more than RMB30 billion (US$4.13 billion) in the institute.

Prior to this announcement, LONGi also recently launched a new black dual-glass back contact module with a 22.3% conversion efficiency. Presented at Intersolar 2024 in Munich, Germany, the Hi-MO X6 Artist Ultra Black module generates up to 435W and has a 25-year product warranty and a 30-year power warranty. The modules are designed for the residential, commercial and industrial solar markets and are already available for the European market.

Moreover, it features the company’s proprietary hybrid passivated back contact (HPBC) cells which allow for a gridless and zero busbar (0BB) front for lossless light absorption. The low reflective texture of the HPBC black cell provides deeper light trapping, reducing reflection and a 1.2% light absorption increase.

10 March 2026
Frankfurt, Germany
The conference will gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing out to 2030 and beyond.
7 April 2026
Dubai World Trade Centre, UAE
Intersolar Middle East and Middle East Energy are coming together to present the mega energy event for the MENA region. From April 7–9, 2026, Dubai World Trade Centre will host Intersolar Middle East Exhibition and Conference alongside the 50th Middle East Energy. Intersolar Middle East focusses on the areas of photovoltaics, PV production technologies, and energy storage systems. The combined event expects to attract more than 45,000 trade visitors from around the world and feature 1,900+ exhibitors.

Read Next

October 17, 2025
Norwegian renewable energy firm Scatec has signed lease agreements for 64MW of solar PV and 10MWh of energy storage capacity in Liberia and Sierra Leone.
October 17, 2025
A group of over 20 US states are suing the Trump administration for the cancellation of the US$7 billion Solar For All Scheme.
October 16, 2025
Masdar and Turkey have entered the final stage of US$1 billion agreement to develop the 1.1GW plant in Bor, Niğde Province, central Turkey.
October 16, 2025
US utility-scale solar additions grew by 56% in 2024, reaching 30GW from 2023’s 19GW and representing over 54% of all new electricity generation capacity added in the country last year.
October 16, 2025
Jakson Green and Blueleaf Energy have reached financial close for the 840MWp Bikaner solar projects in Rajasthan, western India. 
October 16, 2025
Off-grid solar company Sun King has revealed plans to set up manufacturing operations in Kenya and Nigeria.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
October 21, 2025
New York, USA
Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Solar Media Events
February 3, 2026
London, UK