Bifunctional Ultrathin PCBM Enables Passivated Trap States and Cascaded Energy Level toward Efficient Inverted Perovskite Solar Cells
Citations Over TimeTop 10% of 2020 papers
Abstract
Inverted perovskite solar cells (PSCs) with a C60 framework are known for their common drawback of low power conversion efficiency (PCE) of 61-butyric acid methyl ester (PCBM) as a cap layer on perovskite films to overcome this issue. Such a functional cap layer efficiently passivates trap states and establishes a gradient energy level alignment onto perovskite, facilitating the efficient charge transfer and extraction. The as-fabricated inverted PSCs capped with such ultrathin PCBM exhibit a record PCE of 20.07%. After the storage under a N2 atmosphere for more than 500 h, the PCE of PSCs retains over 85% of its initial level. Our work provides an effective method to upgrade inverted PSCs with the C60 framework with improved efficiency and stability.
Related Papers
- → Molecular cation and low-dimensional perovskite surface passivation in perovskite solar cells(2024)234 cited
- → Doubling the power conversion efficiency in CdS/CdSe quantum dot sensitized solar cells with a ZnSe passivation layer(2016)125 cited
- → Direct formation of I3- ions in organic cation solution for efficient perovskite solar cells(2018)35 cited
- → High performance flexible perovskite solar cell with large area via one-step solution process(2019)4 cited
- → Quinoxaline‐Based Materials That Exhibit a Significant Passivation Effect and Lead to the Enhancement in the Power Conversion Efficiency of Perovskite Solar Cells(2023)2 cited