US EditionChinese Researchers Achieve Perovskite Solar Cell Breakthrough
Researchers reduced buried interface defects in perovskite solar cells by over 90%, achieving certified efficiencies above 26% and enhanced operational stability.
- Using modified SnO2-TGA-OAm nanoparticles, researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology engineered a 2D perovskite phase at the buried interface, enhancing stability. The team reports that the grafting of TGA and OAm enabled spontaneous 2D/3D formation during annealing.
- A primary bottleneck has been numerous surface and buried-interface defects that act as trap states, and fabricating buried-interface 2D perovskite structures has remained a persistent challenge.
- PSCs fabricated with this layer achieved PCEs of 26.19% for small-area devices and 23.44% for a 21.54 cm2 module made by ambient air fabrication.
- Unencapsulated cells retained more than 95 percent of initial efficiency after 1,000 hours, and the authors say this paves the way for commercial application of perovskite photovoltaic technology.
- Looking ahead, Prof. PANG Shuping said `This in situ solid-state ligand-exchange strategy could be easily scalable from lab to factory production while delivering enhanced operational stability`, and it may extend to other light-sensitive optoelectronic materials.
15 Articles
15 Articles
Perovskite solar cells maintain 95% of power conversion efficiency after 1,100 hours at 85°C with new molecular coating
Scientists have found a way to make perovskite solar cells not only highly efficient but also remarkably stable, addressing one of the main challenges holding the technology back from widespread use.
Buried 2D/3D heterojunction in n–i–p perovskite solar cells through solid-state ligand-exchange reaction - Nature Energy
Incorporating two-dimensional (2D) perovskite phases at the interfaces of three-dimensional (3D) perovskite solar cells improves device performance. These 2D structures form in the bulk and at interfaces of the perovskite film by adding long-chain ammonium salts into the perovskite, but achieving them exclusively at the buried interface remains challenging. Here we sequentially graft thioglycolic acid and oleylamine onto SnO2 nanoparticles. The …
Researchers boost perovskite solar cell performance via interface engineering
Researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences, in collaboration with international partners, have engineered a thin two-dimensional perovskite phase at the buried interface of three-dimensional (3D) perovskite solar cells (PSCs) to boost device performance and operational stability.
Highest Efficiency Perovskite Solar Cells
Over the past 15 years, perovskite solar cells have emerged as one of the most promising new solar technologies. The versatility of perovskite materials, along with their solution processibility, mean that perovskite solar cell's efficiencies have increased rapidly. As of 2025, the highest efficiency single-junction pe
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