Recent advancements in perovskite solar cell (PSC) technology have taken a significant leap forward, thanks to innovative research led by Qiurui Wang from the College of Mechanical and Electronic Engineering at Shandong University of Science and Technology in Qingdao, China. Published in the journal Carbon Energy, the study introduces a novel approach to enhance the efficiency and stability of all-inorganic PSCs by focusing on the often-overlooked buried interfaces within these cells.
The research centers on the use of a volatile heterocyclic compound known as 2-thiopheneacetic acid (TPA) as a pre-buried additive. This compound plays a crucial role in what the researchers describe as “cross-layer all-interface defect passivation.” By employing an in situ bottom-up infiltration diffusion strategy, TPA effectively addresses interfacial defects that can lead to significant energy losses through nonradiative recombination. Wang explains, “TPA not only suppresses the serious interfacial nonradiative recombination losses by precisely healing the interfacial and underlying defects but also effectively enhances the quality of perovskite film and releases the residual strain of perovskite film.”
The results of this research are promising, with TPA-treated cesium lead bromide (CsPbBr3) PSCs achieving a record power conversion efficiency of 11.23%. This improvement not only marks a technical milestone but also suggests a pathway toward more reliable and efficient solar energy solutions. The enhanced long-term stability of these cells could significantly impact the commercial viability of PSCs, making them more attractive for large-scale deployment in the renewable energy sector.
The implications of this research extend beyond just improved efficiency. As the energy sector increasingly seeks sustainable and cost-effective solutions, the ability to enhance the performance and durability of solar technologies is critical. The findings from Wang’s team open new avenues for further innovation, potentially leading to a new generation of solar cells that can operate effectively in various environmental conditions.
This research highlights the importance of addressing underlying issues in solar cell technology, such as buried interfaces and defect passivation. As Qiurui Wang and his team continue to explore these advancements, the energy industry may soon see a shift towards more efficient and stable solar power solutions, paving the way for broader adoption of renewable energy technologies.
For more information about the research and its implications, you can visit the College of Mechanical and Electronic Engineering at Shandong University of Science and Technology.
