Search

Inverted MAPbI3 Perovskite Solar Cells with Graphdiyne Derivative-Incorporated Electron Transport Layers Exceeding 20% Efficiency In article number 1900241, Tonggang Jiu and co-workers introduce chlorine-substituted graphdiyne into MAPbI SB 3 sb -based perovskite solar cells to produce a peak efficiency of 20.34% with suppressed J-V hysteresis, which results from the interaction of derivated graphdiyne and PCBM, to be exact, four types of non-covalent bonds. These findings suggest that derivated graphdiyne could have potential applications in solar cells and other photoelectric devices. [Extracted from the article]

Hole-transporting materials play an important role in perovskite solar cells. In this study, we introduced a novel hole-transporting material without p-type dopant, a tetrathiafulvalene derivative anchored with eight carboxyl groups (TTA) into inverted structure perovskite solar cells. The devices with TTA as hole-transporting layer showed high power conversion efficiency of 16.7%, which was 44.5% improvement compared with the reference devices without hole-transporting layer. The performance improvement was ascribed to three factors: 1) the better match of energy level between ITO and perovskite layer; 2) enhanced hole extraction at anode interface; 3) improved perovskite morphology. [ABSTRACT FROM AUTHOR]