The role of TCNQ for surface and interface passivation in inverted perovskite solar cells

• DOI: 10.1007/s40243-024-00280-9
• Publication Date: 2025-01-21T22:35:47Z
• Authors: Samuel Abicho; Bekele Hailegnaw; Felix Mayr; Munise Cobet; Cigdem Yumusak; Asefa Sergawi; Teketel Yohannes; Martin Kaltenbrunner; Markus Clark Scha...; Getachew Adam Wor...
• Keywords: Passivation; Interface (matter)

Abstract The noticeable growth in the power conversion efficiency of solution-processed organo-inorganic halide perovskite solar cells (OIHPSCs) incited photovoltaic community to look for limitations that hurdle commercialization process. surface and interface defects between electron transport layers are among main challenges cause significant non-radiative recombination losses, thereby they result poor performance stability. In this work, tetracyanoquinodimethane (TCNQ), a strong acceptor molecule, is applied at photoactive [6,6]-phenyl C 61 butyric acid methyl ester (PCBM) modify interface, enhance device Steady-state time-resolved photoluminescence measurements were used characterize role TCNQ passivation reducing charge carriers. Current density versus voltage (J-V) show improvement devices open-circuit (V oc ), short-circuit current (J sc fill factor (FF) with passivation, which attributed suppressed recombination. addition, device’s stability was observed. This study reveals dual improving photoelectric properties ambient air processed pin architecture.