# Perovskite solar efficiency record achievement > Live situation record from CLSTR: https://clstr.news/situations/perovskite-solar-efficiency-record-achievement > Updated: 2026-10-08T00:39:58.000Z. Sources: 6. Developments: 2. Engineers from the University of New South Wales (UNSW), working with the company UtmoLight, have established a new world efficiency record for large-scale perovskite solar submodules. The team achieved a certified stabilized power conversion efficiency of 23.5% on a 676cm² submodule. To reach this benchmark, researchers utilized a new fabrication approach where a hole-selective contact forms directly, allowing them to remove the nickel oxide layer typically used to prevent instability-causing chemical reactions. This method helps narrow the efficiency gap between small laboratory cells and larger, industrially relevant modules. Looking forward, the team aims to produce a full-scale module of 2.8m² with a targeted efficiency of approximately 18% to 19%. Additionally, UNSW is conducting an $18 million project to test the durability of perovskite and perovskite-silicon tandem modules against environmental stressors like humidity and temperature fluctuations. ## Timeline ### 2026-10-08: UNSW and UtmoLight set efficiency record for perovskite solar submodules UNSW Sydney and UtmoLight have set a 23.5% efficiency record for 676cm² perovskite solar submodules, advancing the scalability of solar technology from lab cells to industrial manufacturing. 2 sources. https://clstr.news/cluster/unsw-and-utmolight-set-efficiency-record-for-perovskite-solar-submodules ### 2026-10-05: UNSW researchers set new perovskite solar efficiency record UNSW researchers have set a new world efficiency record for large-scale perovskite solar submodules and launched an $18 million project to test the durability of next-generation solar technology in the field. 4 sources. https://clstr.news/cluster/unsw-researchers-set-new-perovskite-solar-efficiency-record --- Cite as: Perovskite solar efficiency record achievement. CLSTR, https://clstr.news/situations/perovskite-solar-efficiency-record-achievement