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Optimizing SnO2 Quantum Dot Precursor Solutions for Perovskite Solar Cells with Reduced Hysteresis
Solar RRL ( IF 6.0 ) Pub Date : 2024-01-31 , DOI: 10.1002/solr.202300977
Gennaro V. Sannino 1, 2 , Thomas W. Gries 3 , Qiong Wang 3 , Maria Federica Caso 1 , Antonella De Maria 1 , Laura Lancellotti 1 , Lucia V. Mercaldo 1 , Ana Belén Muñoz‐García 4 , Michele Pavone 2 , Antonio Abate 3, 5 , Paola Delli Veneri 1
Solar RRL ( IF 6.0 ) Pub Date : 2024-01-31 , DOI: 10.1002/solr.202300977
Gennaro V. Sannino 1, 2 , Thomas W. Gries 3 , Qiong Wang 3 , Maria Federica Caso 1 , Antonella De Maria 1 , Laura Lancellotti 1 , Lucia V. Mercaldo 1 , Ana Belén Muñoz‐García 4 , Michele Pavone 2 , Antonio Abate 3, 5 , Paola Delli Veneri 1
Affiliation
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In recent years, SnO2 quantum dots (QDs) have been widely used for preparing the electron-transport layer within perovskite solar cells (PSCs). However, the fabricated devices exhibit an evident hysteresis unless interlayer materials are introduced to passivate or prevent the formation of trap states at the SnO2–perovskite interface. Herein, the use of the zwitterion 3-(1-pyridinio)-1-propanesulfonate (PPS) as additive inside the SnO2 QDs solution is proposed. The results highlight that the PPS plays a multifunctional role by accelerating the synthesis of the QDs, enhancing the electron transfer and passivating defects at the SnO2–perovskite interface. The resulting PSCs with SnO2 QDs incorporating PPS exhibit a remarkable reduction in hysteresis index (HI) compared to those prepared with thiourea or without any additives. This reduction in HI suggests that PPS serves as a cost-effective alternative additive for SnO2 QDs preparation, eliminating the need for additional interlayers or expensive additives.
中文翻译：
优化钙钛矿太阳能电池的 SnO2 量子点前驱体解决方案，减少磁滞
近年来，SnO 2量子点（QD）已广泛用于制备钙钛矿太阳能电池（PSC）中的电子传输层。然而，所制造的器件表现出明显的滞后现象，除非引入层间材料来钝化或防止在 SnO 2 -钙钛矿界面处形成陷阱态。在此，建议使用两性离子3-(1-吡啶)-1-丙磺酸盐(PPS)作为SnO 2 QDs溶液内的添加剂。结果强调，PPS 通过加速 QD 的合成、增强电子转移和钝化 SnO 2 -钙钛矿界面的缺陷而发挥多功能作用。与使用硫脲或不使用任何添加剂制备的PSC相比，所得到的具有掺有PPS的SnO 2 QD的PSC表现出滞后指数（HI）显着降低。 HI 的降低表明 PPS 可以作为 SnO 2 QD 制备的经济高效的替代添加剂，从而无需额外的中间层或昂贵的添加剂。
更新日期：2024-01-31
中文翻译：
优化钙钛矿太阳能电池的 SnO2 量子点前驱体解决方案，减少磁滞
近年来，SnO 2量子点（QD）已广泛用于制备钙钛矿太阳能电池（PSC）中的电子传输层。然而，所制造的器件表现出明显的滞后现象，除非引入层间材料来钝化或防止在 SnO 2 -钙钛矿界面处形成陷阱态。在此，建议使用两性离子3-(1-吡啶)-1-丙磺酸盐(PPS)作为SnO 2 QDs溶液内的添加剂。结果强调，PPS 通过加速 QD 的合成、增强电子转移和钝化 SnO 2 -钙钛矿界面的缺陷而发挥多功能作用。与使用硫脲或不使用任何添加剂制备的PSC相比，所得到的具有掺有PPS的SnO 2 QD的PSC表现出滞后指数（HI）显着降低。 HI 的降低表明 PPS 可以作为 SnO 2 QD 制备的经济高效的替代添加剂，从而无需额外的中间层或昂贵的添加剂。
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