Advances in SnO<sub>2</sub> for Efficient and Stable n-i-p Perovskite Solar Cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 35255529.
- Also identified by DOI 10.1002/adma.202110438.
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Abstract
Perovskite solar cells (PSCs) based on the regular n-i-p device architecture have reached above 25% certified efficiency with continuously reported improvements in recent years. A key common factor for these recent breakthroughs is the development of SnO<sub>2</sub> as an effective electron transport layer in these devices. In this article, the key advances in SnO<sub>2</sub> development are reviewed, including various deposition approaches and surface treatment strategies, to enhance the bulk and interface properties of SnO<sub>2</sub> for highly efficient and stable n-i-p PSCs. In addition, the general materials chemistry associated with SnO<sub>2</sub> along with the corresponding materials challenges and improvement strategies are discussed, focusing on defects, intrinsic properties, and impact on device characteristics. Finally, some SnO<sub>2</sub> implementations related to scalable processes and flexible devices are highlighted, and perspectives on the future development of efficient and stable large-scale perovskite solar modules are also provided.