Mixed self-assembled monolayer strategy for efficient hole transport in perovskite solar cells
발표자
()
초록
내용
Despite its many advantages, NiOx has disadvantages such as high trap density and energy level mismatch at the interface, which degrade the performance of perovskite solar cells (PSCs). To overcome these challenges, self-assembled monolayers (SAMs) have been applied as hole transport layers, and in this study, we propose a mixed monomolecular membrane strategy for more efficient hole transport. This strategy aims to mitigate the drawback of single SAM by improving energy bandgap alignment and minimizing non-radiative recombination, leading to significantly higher power conversion efficiency. In the end, this strategy resulted in a high-efficiency, highly stable perovskite solar cell capable of maintaining 95% (over 500 hours at a temperature of 65℃) of its initial efficiency as well as efficiencies of over 21%. These promising results open the pathway towards the realization of high-performance PSCs.