116469-02-4Relevant articles and documents
Aryl Diammonium Iodide Passivation for Efficient and Stable Hybrid Organ-Inorganic Perovskite Solar Cells
Hou, Minna,Xu, Yuzeng,Zhou, Bo,Tian, Ying,Wu, Yan,Zhang, Dekun,Wang, Guangcai,Li, Baozhang,Ren, Huizhi,Li, Yuelong,Huang, Qian,Ding, Yi,Zhao, Ying,Zhang, Xiaodan,Hou, Guofu
, (2020)
Surface passivation is increasingly one of the most prominent strategies to promote the efficiency and stability of perovskite solar cells (PSCs). However, most passivation molecules hinder carrier extraction due to poorly conductive aggregation between perovskite surface and carrier transportation layer. Herein, a novel molecule: p-phenyl dimethylammonium iodide (PDMAI) with ammonium group on both terminals is introduced, and its passivation effect is systematically investigated. It is found that PDMAI can mitigate defects at the surface and promote carrier extraction from perovskite to the hole transporting layer, leading to a lift of open-circuit voltage of 40?mV. Profiting from superior PDMAI passivation, the average efficiency of PSCs has been elevated from 19.69percent to 20.99percent. As demonstrated with density functional theory calculations, PDMAI probably tends to anchor onto the perovskite surface with both -NH3I tails, and enhances the adhesion and contact to perovskite layer. The exposed hydrophobic aryl core protects perovskite against detrimental environmental factors. In addition, the alkyl component between aryl and ammonium groups is demonstrated to be essentially vital in triggering passivation function, which offers the guidance for the design of passivation molecules.
Monometallic, Homo- and Hetero-bimetallic Complexes Based on Redox-active Tris(3,5-dimethylpyrazolyl)borato Molybdenum and Tungsten Nitrosyls. Part 7. Compounds containing Strongly Interacting Redox Centres derived from para-Substituted Anilines and Phenols
Charsley, Stephen M.,Jones, Christopher J.,McCleverty, Jon A.,Neaves, Bryan D.,Reynolds, Sarah J.,Denti, Gianfranco
, p. 293 - 300 (2007/10/02)
The compounds , 2(NHC6H4NH)> (M=Mo, X=Cl or I; M=W, X=Cl), 2(NHC6H4O)> (M=Mo, X=Cl or I; M=W, X=Cl), 2(OC6H4O)>, and (Y=Z=NH; Y=O, Z=NH; Y=NH, Z=O) have been prepared.Cyclic voltammetric and coulometric studies established that the monometallic species undergo a one-electron reduction, whereas the bimetallic species are reduced in two one-electron steps.The electrochemical data suggest that the redox centres in the bimetallic complexes influence each other strongly.
