Enhancing Indoor Photovoltaic Efficiency to 37.6% Through Triple Passivation Reassembly and n-Type to p-Type Modulation in Wide Bandgap Perovskites
S. Huang, S. Hou, G. Sanfo, J. Xu, Y. Wang, H. Muwanwella, L. Pfeifer, X. Liu, S. M. Zakeeruddin, Y. Huang, M. Grätzel, M. T. Sajjad, M. Abdi-Jalebi, Adv. Funct. Mater. 2025, 2502152. https://doi.org/10.1002/adfm.202502152
This academic paper focuses on improving the performance of wide bandgap perovskite solar cells (WB-PSCs) for indoor power generation. The researchers developed a Triple Passivation Treatment (TPT) using a combination of substances to address issues like material defects and instability under light. This method leads to a transformation of the perovskite's surface properties, enhancing charge extraction and preventing degradation. As a result, the treated cells achieved significantly higher efficiencies in indoor light and showed improved stability over time under various conditions, representing a notable advancement for these types of solar cells.
Capacitance-voltage (C-V) measurements, electrochemical impedance spectroscopy (EIS), transient photocurrent decay (TPC) and transient photovoltage (TPV) decay, intensity modulated photocurrent spectroscopy (IMPS) and intensity modulated photovoltage spectroscopy (IMVS) were performed in ambient air using the Fluxim Paios characterization system.