The author of 《Efficient Passivation with Lead Pyridine-2-Carboxylic for High-Performance and Stable Perovskite Solar Cells》 were Fu, Sheng; Li, Xiaodong; Wan, Li; Wu, Yulei; Zhang, Wenxiao; Wang, Yueming; Bao, Qinye; Fang, Junfeng. And the article was published in Advanced Energy Materials in 2019. Product Details of 98-98-6 The author mentioned the following in the article:
Stability has become the main obstacle for the commercialization of perovskite solar cells (PSCs) despite the impressive power conversion efficiency (PCE). Poor crystallization and ion migration of perovskite are the major origins of its degradation under working condition. Here, high-performance PSCs incorporated with pyridine-2-carboxylic lead salt (PbPyA2) are fabricated. The pyridine and carboxyl groups on PbPyA2 can not only control crystallization but also passivate grain boundaries (GBs), which result in the high-quality perovskite film with larger grains and fewer defects. In addition, the strong interaction among the hydrophobic PbPyA2 mols. and perovskite GBs acts as barriers to ion migration and component volatilization when exposed to external stresses. Consequently, superior optoelectronic perovskite films with improved thermal and moisture stability are obtained. The resulting device shows a champion efficiency of 19.96% with negligible hysteresis. Furthermore, thermal (90°C) and moisture (RH 40-60%) stability are improved threefold, maintaining 80% of initial efficiency after aging for 480 h. More importantly, the doped device exhibits extraordinary improvement of operational stability and remains 93% of initial efficiency under maximum power point (MPP) tracking for 540 h. The experimental part of the paper was very detailed, including the reaction process of Picolinic acid(cas: 98-98-6Product Details of 98-98-6)
Picolinic acid(cas: 98-98-6) is used in the preparation of 2-Aminodihydro[1,3]thiazines as BACE 2 inhibitors and their preparation and use in the treatment of diabetes.Product Details of 98-98-6