Recently, the flexible crystalline silicon perovskite tandem battery independently developed by Xiexin Integration has been certified by the National Center for Quality Inspection and Testing of Solar Photovoltaic Products (CPVT). The photoelectric conversion efficiency is 33.44% . This efficiency level is not only a stage breakthrough in 2026 in the company's "five-year plan" for perovskite lamination, but also marks that Xiexin Integration has been firmly in the first echelon of the global flexible perovskite lamination battery industry.
This achievement was led by Xiexin Integrated Postdoctoral Workstation and completed by Professor Yang Xinbo's team of Suzhou University. The two sides have deeply bound the advantages of production, teaching and research, focused on the needs of engineering landing and industrialization at the enterprise end, and deeply cultivated the underlying interface mechanism and passivation process innovation at the university end. They have jointly overcome a series of key problems such as ultra-thin silicon substrate adaptation, interface passivation, flexible stress control, and achieved ultra-high photoelectric conversion performance in flexible form.
Compared with traditional rigid batteries, this flexible laminated battery has distinct differentiation advantages: extremely thin and light, supporting a certain degree of bending without fragmentation; It has an ultra-high conversion efficiency of 33.44%, a device-level specific power of more than 2000 W/kg, and a significant advantage in power generation under the same weight, ranking in the forefront of the industry. These technical characteristics make it a leap-forward breakthrough from material to battery structure design, and open up new possibilities for the application of high-efficiency photovoltaic energy in satellite, space station, deep space exploration and other scenarios.
In the future, Xiexin Integration will continue to deepen the school-enterprise joint research and development model, relying on the post-doctoral high-end talent platform and the top scientific research strength of universities, continue to tackle the core issues such as the stability of flexible perovskite stack technology and large-scale preparation process, and accelerate the promotion of technology from laboratory to industrialization.
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