Strategy of Anti-solvent Physicochemical Engineering for Enhanced Interfacial Affinity between Perovskite and Interlayer
발표자
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초록
내용
Here, a novel perspective on the physical properties of anti-solvents is proposed, which is related to perovskite crystallization. Specifically, we focus on the physical properties of each solvent (hydrophobic solvent of methylbenzene or chlorobenzene). This is because precursor solubility depends on the interaction among the solvents in the solution. From this point of view, the correlation between the physical properties of each solvent is explored with the parameters (dielectric constant and dipole moment). thereby observing the perovskite precipitation tendency. In addition, to compare the interfacial affinity by the effect of each anti-solvent, an n-type electron acceptor interlayer is stacked on the photosensitive layer. Also, the thickness of PCBM ([6,6]-phenyl-C61-butyric acid methyl ester as an n-type electron acceptor) was adjusted to observe the interface quality. Finally, we evaluated the photoelectric effect in each anti-solvent treated perovskite photodetectors in detail.