AI Article Synopsis
- Interface engineering is crucial for improving the efficiency of perovskite solar cells (PSCs), specifically by enhancing the electron mobility and charge transfer in the tin oxide (SnO) electron transport layer (ETL) using a two-dimensional material called MXene.
- The incorporation of MXene not only improves the performance of the SnO ETL but also creates a better growth environment for perovskite films, leading to lower trap density and reduced charge transport losses.
- This innovative approach results in PSCs that achieve an efficiency of 20.65%, with significantly reduced non-radiative recombination and minimal hysteresis, demonstrating the potential for more efficient solar energy solutions.
Article Abstract
Interface engineering is imperative to boost the extraction capability in perovskite solar cells (PSCs). We propose a promising approach to enhance the electron mobility and charge transfer ability of tin oxide (SnO) electron transport layer (ETL) by introducing a two-dimensional carbide (MXene) with strong interface interaction. The MXene-modified SnO ETL also offers a preferable growth platform for perovskite films with reduced trap density. Through a spatially resolved imaging technique, profoundly reduced non-radiative recombination and charge transport losses in PSCs based on MXene-modified SnO are also observed. As a result, the PSC achieves an enhanced efficiency of 20.65% with ultralow saturated current density and negligible hysteresis. We provide an in-depth mechanistic understanding of MXene interface engineering, offering an alternative approach to obtain efficient PSCs.
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| http://dx.doi.org/10.1021/acsami.0c17338 | DOI Listing |
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