On December 1, it was reported that the 1.68eV (electronvolt) wide-bandgap perovskite solar cell independently developed by the New Energy Photovoltaic Technology Team of PetroChina Engineering Materials Research Institute has, after certification by an authoritative third-party professional testing organization, set a new world record with a photoelectric conversion efficiency of 25.05%. This marks the third time PetroChina has broken the world record in this field, maintaining its leadership in perovskite photovoltaic technology and laying a solid foundation for the company to accelerate the construction of large-scale clean power bases and promote distributed clean energy alternatives in oil fields.
As a next-generation core technology in the global photovoltaic sector, perovskite solar cells have garnered significant attention due to their exceptional efficiency potential. The theoretical upper limit for single-junction perovskite cells can reach 33%, while perovskite tandem cells can achieve up to 43%, both of which far surpass the 29.4% efficiency limit of traditional crystalline silicon solar cells. In the photovoltaic industry, every 1-percentage-point absolute increase in cell efficiency can reduce the cost of electricity by 3–5%. Therefore, overcoming technical bottlenecks and advancing perovskite cells to higher efficiency levels has become a core focus and a major research hotspot in the global photovoltaic industry.
