The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells
Reducing the interfacial defects between the perovskite/electron transport layer (ETL) is the key point to improving the efficient and stable performance of perovskite solar cells (PSCs). In this study, two self-assembled molecules ((aminomethyl)phosphonic acid and glycine) with different functional...
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MDPI AG
2023-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/23/7306 |
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| author | Kaihuai Du Aili Wang Yue Li Yibo Xu Lvzhou Li Ningyi Yuan Jianning Ding |
| author_facet | Kaihuai Du Aili Wang Yue Li Yibo Xu Lvzhou Li Ningyi Yuan Jianning Ding |
| author_sort | Kaihuai Du |
| collection | DOAJ |
| description | Reducing the interfacial defects between the perovskite/electron transport layer (ETL) is the key point to improving the efficient and stable performance of perovskite solar cells (PSCs). In this study, two self-assembled molecules ((aminomethyl)phosphonic acid and glycine) with different functional groups (phosphonic acid (-H<sub>2</sub>PO<sub>3</sub>) and carboxylic acid (-COOH)) were mixed to form the buried bottom interface of PSCs. The synergistic effect of -H<sub>2</sub>PO<sub>3</sub> with its higher anchoring ability and -COOH with its fast carrier transport improved the performance of PSCs. Additionally, the SnO<sub>2</sub> modified by mixed self-assembly molecules (M-SAM) showed a more appropriate energy level alignment, favoring charge transport and minimizing energy loss. In addition, the amine group (-NH<sub>2</sub>) on the two small molecules effectively interacted with uncoordinated Pb<sup>2+</sup> in perovskite and improved the quality of the perovskite films. Consequently, the (FAPbI<sub>3</sub>)<sub>0.992</sub>(MAPbBr<sub>3</sub>)<sub>0.008</sub> PSCs with M-SAM reached a PCE of 24.69% (0.08 cm<sup>2</sup>) and the perovskite modules achieved a champion efficiency of 18.57% (12.25 cm<sup>2</sup> aperture area). Meanwhile, it still maintained more than 91% of its initial PCE after being placed in nitrogen atmosphere at 25 °C for 1500 h, which is better than that of the single-SAM and control devices. Further reference is provided for the future commercialization of perovskite with efficient and stable characteristics. |
| first_indexed | 2024-03-09T01:47:55Z |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T01:47:55Z |
| publishDate | 2023-11-01 |
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| series | Materials |
| spelling | doaj.art-754665ef0dd14aec8437aca918ba662c2023-12-08T15:20:38ZengMDPI AGMaterials1996-19442023-11-011623730610.3390/ma16237306The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar CellsKaihuai Du0Aili Wang1Yue Li2Yibo Xu3Lvzhou Li4Ningyi Yuan5Jianning Ding6Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaSchool of Mechanical Engineering, Institute of Technology for Carbon Neutralization, Yangzhou University, Yangzhou 225127, ChinaJiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaSchool of Mechanical Engineering, Institute of Technology for Carbon Neutralization, Yangzhou University, Yangzhou 225127, ChinaJiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaReducing the interfacial defects between the perovskite/electron transport layer (ETL) is the key point to improving the efficient and stable performance of perovskite solar cells (PSCs). In this study, two self-assembled molecules ((aminomethyl)phosphonic acid and glycine) with different functional groups (phosphonic acid (-H<sub>2</sub>PO<sub>3</sub>) and carboxylic acid (-COOH)) were mixed to form the buried bottom interface of PSCs. The synergistic effect of -H<sub>2</sub>PO<sub>3</sub> with its higher anchoring ability and -COOH with its fast carrier transport improved the performance of PSCs. Additionally, the SnO<sub>2</sub> modified by mixed self-assembly molecules (M-SAM) showed a more appropriate energy level alignment, favoring charge transport and minimizing energy loss. In addition, the amine group (-NH<sub>2</sub>) on the two small molecules effectively interacted with uncoordinated Pb<sup>2+</sup> in perovskite and improved the quality of the perovskite films. Consequently, the (FAPbI<sub>3</sub>)<sub>0.992</sub>(MAPbBr<sub>3</sub>)<sub>0.008</sub> PSCs with M-SAM reached a PCE of 24.69% (0.08 cm<sup>2</sup>) and the perovskite modules achieved a champion efficiency of 18.57% (12.25 cm<sup>2</sup> aperture area). Meanwhile, it still maintained more than 91% of its initial PCE after being placed in nitrogen atmosphere at 25 °C for 1500 h, which is better than that of the single-SAM and control devices. Further reference is provided for the future commercialization of perovskite with efficient and stable characteristics.https://www.mdpi.com/1996-1944/16/23/7306interface passivationanchoringcharge transferself-assembled small moleculelarge area |
| spellingShingle | Kaihuai Du Aili Wang Yue Li Yibo Xu Lvzhou Li Ningyi Yuan Jianning Ding The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells Materials interface passivation anchoring charge transfer self-assembled small molecule large area |
| title | The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells |
| title_full | The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells |
| title_fullStr | The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells |
| title_full_unstemmed | The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells |
| title_short | The Synergistic Effect of Phosphonic and Carboxyl Acid Groups for Efficient and Stable Perovskite Solar Cells |
| title_sort | synergistic effect of phosphonic and carboxyl acid groups for efficient and stable perovskite solar cells |
| topic | interface passivation anchoring charge transfer self-assembled small molecule large area |
| url | https://www.mdpi.com/1996-1944/16/23/7306 |
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