Key Findings
A collaborative research group from Nanjing University in China and perovskite PV specialist Renshine Solar has established a groundbreaking world record in the efficiency of large-area perovskite solar cell modules. They achieved an astonishing 24.0% power conversion efficiency for a module with a practical aperture area of 810cm². This performance was independently verified by the internationally reputable certification body TÜV SÜD, certifying it as the highest efficiency ever recorded for a perovskite module of this size. Furthermore, the developed module also met the stringent IEC 61215 reliability requirements, demonstrating significant progress in terms of durability and stability towards commercialization.
Technical Details
This record-breaking efficiency and stability were achieved through a combination of innovative technologies. One key element is the adoption of a high saturated vapor pressure (SVP) treatment, a process crucial for improving the crystal quality and reducing defects within the perovskite thin film. Another critical innovation is the introduction of chemically stable lead carboxylate passivators (LCPs). LCPs effectively passivate defects on the perovskite crystal surface, suppressing non-radiative recombination, thereby extending the lifetime of charge carriers and enhancing efficiency. LCPs also increase resistance to moisture and heat, contributing to the long-term stability of the device. These technical advancements have made it possible to minimize efficiency loss associated with large-area scaling while meeting rigorous reliability testing standards.
Background and Industry Context
Perovskite solar cells are widely considered the leading candidate for next-generation photovoltaics globally, due to their high power conversion efficiency and potential for low-cost manufacturing. However, maintaining the high efficiencies achieved in small laboratory cells when scaled up to commercially viable large-area modules, and ensuring long-term environmental stability, have been the primary barriers to their commercialization. China is a global leader in PV technology R&D and manufacturing, and under strong government and industry support, has made rapid progress in this sector. The collaborative research by Nanjing University and Renshine Solar provides concrete solutions to these challenges, clearly outlining a path towards large-scale commercialization of perovskite solar cells.
Future Outlook
The achievement of 24.0% conversion efficiency for an 810cm² module and its compliance with IEC 61215 reliability requirements indicate that perovskite solar cells are rapidly becoming ready for practical market introduction. This breakthrough is expected to contribute to reduced manufacturing costs, increased power generation, and broader adoption of solar photovoltaics. In the future, these high-efficiency, durable, large-area perovskite modules are anticipated to be widely utilized in residential, commercial, and utility-scale solar power plants, as well as various other applications. This technological innovation by Chinese research institutions and companies is poised to accelerate the global clean energy transition and play an indispensable role in achieving a sustainable society.
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