Publications by authors named "Chengxia Shen"
Article Synopsis
- Research on perovskite solar cells (PSCs) highlights that conventional metal oxide electron transport layers (ETLs) like TiO and SnO are dominant, while alternatives are underperforming.
- This study introduces antimony oxide (SbO) as a new, cost-effective, and eco-friendly metal oxide ETL, which has a thin amorphous film and exhibits excellent electron extraction properties.
- The PSCs utilizing the SbO ETL achieved a notable power conversion efficiency of 24.7% and demonstrated better stability than those using SnO, suggesting SbO as a viable option for future optoelectronic devices.
Tin oxide (SnO) as electron transportation layer (ETL) has demonstrated remarkable performance applied in perovskite solar cells but still accommodated a host of defects such as oxygen vacancies, uncoordinated Sn , and absorbed hydroxyl groups. Here, we use inorganic sodium thiosulfate NaSO to modify SnO nanoparticles in a bulk blending manner. Strong interaction between NaSO and SnO occurs, as reflected from the elemental chemical state change.
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- - Chemical bath deposited (CBD) SnO is crucial for high-efficiency perovskite solar cells, but its traditional deposition process is slow, taking 3-4 hours.
- - A new method has been developed that uses a concentrated Sn source and Sb doping, reducing deposition time to just 5 minutes while maintaining 95% efficiency.
- - The CBD SnO substrates can be recycled, and refurbished solar cells retain approximately 98% of their initial efficiency after being recycled three times.