Australia - Sydney - October 10 2026 - Engineers from the University of New South Wales (UNSW) Sydney collaborated with UtmoLight a Chinese perovskite maker to reach a stabilized power conversion efficiency of 23.5% as validated by the certifying organization for their 30 cm x 30 cm perovskite solar module with an aperture area of 676 cm² making it in the Guinness World Records book of achievements for large perovskite devices thus paving the way for commercializing the next generation of photovoltaics.
A Materials Breakthrough That Matters for Manufacturing
Though the main statistic is quite significant in terms of efficiency, according to the researchers, what is actually important in this case is the method that was used. Conventional perovskite cells include nickel oxide as a hole-transport material. Unfortunately, nickel oxide can react unfavorably with the perovskite and make the whole device unstable. The UNSW-UtmoLight team developed a different fabrication pathway in which a hole-selective contact forms directly during the deposition process, eliminating the need for the nickel oxide layer entirely.
"For us, this is not only about setting another efficiency record," said Scientia Professor Xiaojing Hao, who leads the UNSW team at the School of Photovoltaic and Renewable Energy Engineering. "It is about developing materials and device concepts that continue to perform when they are translated from laboratory cells to industrially relevant areas". Professor Hao further noted that "materials that work exceptionally well in a small laboratory device do not necessarily behave in the same way under scaled-up processing conditions," underscoring the fundamental manufacturing challenge that the team set out to address.
The collaboration with UtmoLight-a Wuxi-based perovskite specialist-has been instrumental in this regard. The partnership, formalized earlier this year with plans to jointly establish an International Perovskite Laboratory, allows researchers to test the scalability of their material concepts from the earliest stages of development, rather than spending years optimizing formulations that may ultimately fail at industrial scale.
The Commercialization Pathway
Perovskite is known as a potential revolutionary material in the field of solar technologies due to its efficiency and cheap manufacturing. Tandem solar cells are one of the most exciting applications of perovskite. It involves the making of an elaborate system in which perovskite is layered over conventional silicon solar cells to catch different parts of the solar spectrum and thus generate higher power without the actual increase in size of the module. The distribution of perovskite solar cells has nevertheless faced many hurdles in terms of long-term sustainability and large-scale production.
The UNSW-UtmoLight record encounters the production angle head-on. Plans have been announced for the production of a full-scale module measuring 2.8 m²-standard commercial sizes in photovoltaic module specifications-within a few months. A target efficiency of around 18% to 19% is being worked toward.
Challenges Remain, But the Trajectory Is Clear
The team of scientists expects more work in terms of durability improvement which means that improved efficiency and reproduction processes, as well as stability over long stretches of time, must be reached before the implementation of the invention can take place. Perovskite is known to dissipate under heat, moisture, and prolonged exposure to sunlight hence making durability a significant barrier on the path to commercialization. UNSW is conducting a five-year-long abidance trial of various perovskite modules in outdoor conditions. Professor Hao also received **6.3 million Australian dollars** (around **4.4 million USD**) from the Australian Renewable Energy Agency for the further enhancement of efficiency and stability of perovskite-silicon modules.
The 676 cm² submodule record can be viewed as a benchmark for the entire industry: perovskite technology has been proven to operate with high efficiency in area large enough to be useful for industrial usage. While the industry makes the transition from laboratory demonstrations to gigawatt-scale production it is essential to achieve results such as the described above for the confirmation of the main thesis that perovskite is going to become an important player in the solar energy field of the future.
