pi-Conjugated Small Molecules Modified SnO2 Layer for Perovskite Solar Cells with over 23% Efficiency
文献类型：期刊论文
| 作者 | Lou, Qiang; Han, Yufang; Liu, Chang; Zheng, Kanghui; Zhang, Jinsheng; Chen, Xia; Du, Qing; Chen, Chong; Ge, Ziyi |
| 刊名 | ADVANCED ENERGY MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 11期号:39 |
| 关键词 | ELECTRON-TRANSFER SOLVENT ROUTE |
| 英文摘要 | SnO2 has been universally applied as electron transporting layer (ETL) towards the fabrication of highly efficient perovskite solar cells (PSCs), owing to its unique advantages including low-temperature solution-processability, high optical, transmittance and good electrical conductivity. Uncoordinated Sn-dangling bonds on SnO2 surface exist as deep traps to capture the photogenerated carriers, causing hysteresis and device instability. Fullerene derivatives, though being widely utilized as the passivator for SnO2, are highly prone to self-aggregate due to their pi-cage structures, which hampers passivation. Herein, pi-conjugated n-type small molecules with better film formation ability are innovatively designed, to improve passivation effectiveness. By exploring the interplay between molecular stacking of small molecules and charge transporting/recombination dynamics at the SnO2/perovskite interface, it is unveiled that a more compact molecular packing of the organic passivators yields superior interfacial characteristics, in terms of fewer trap states, lower charge recombination and higher electron transporting efficiency. An impressive PCE over 23% is achieved with the assistance of this new-type SnO2-passivator, which is among the highest reported value for triple-cation perovskite systems to date. This work offers an original concept for the design and synthesis of ETL passivators towards the development of high performance and stable PSCs. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21619]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Liu, C 2.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Chen, C (corresponding author), Henan Univ, Henan Key Lab Photovolta Mat, Kaifeng 475004, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lou, Qiang,Han, Yufang,Liu, Chang,et al. pi-Conjugated Small Molecules Modified SnO2 Layer for Perovskite Solar Cells with over 23% Efficiency[J]. ADVANCED ENERGY MATERIALS,2021,11(39). |
| APA | Lou, Qiang.,Han, Yufang.,Liu, Chang.,Zheng, Kanghui.,Zhang, Jinsheng.,...&Ge, Ziyi.(2021).pi-Conjugated Small Molecules Modified SnO2 Layer for Perovskite Solar Cells with over 23% Efficiency.ADVANCED ENERGY MATERIALS,11(39). |
| MLA | Lou, Qiang,et al."pi-Conjugated Small Molecules Modified SnO2 Layer for Perovskite Solar Cells with over 23% Efficiency".ADVANCED ENERGY MATERIALS 11.39(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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