Higher carrier extraction efficiency was achieved by the perovskite film made via FTAI because it exhibited larger grain sizes and better energy level alignment with the electron transport material. The stiff device adopting FTAI obtained a maximum efficiency of 14.
Can a perovskite-type battery be used in a photovoltaic cell?
The use of complex metal oxides of the perovskite-type in batteries and photovoltaic cells has attracted considerable attention.
How do defects in perovskite materials affect their efficiency?
Defects in perovskite materials significantly affect their efficiency by introducing nonradiative recombination centers that reduce the V OC and fill factor of the cells . Defects can be broadly categorized into intrinsic and extrinsic types. 12.2.1. Intrinsic defects
How to improve moisture resistance of perovskite films?
Perovskite cells with PEG (Polyethylene Glycol) have shown high efficiency values for up to 300 hours in a high humidity environment (70% RH). The introduction of ligands, such as PU (Polyurethane) and TPA (Terephthalic Acid), has been used to improve the moisture resistance of perovskite films by cross-linking with the perovskite grains .
Do perovskite materials have high light absorption and efficient charge transport?
This review explores the high light absorption and efficient charge transport in perovskite materials. The review covers perovskite properties, fabrication techniques, and recent advancements in this field. The review addresses challenges including stability, the environmental impact, and issues related to perovskite degradation.
Employing suitable additives to passivate defect states in perovskite layers and enhancing device hydrophobicity, or refining the crystallographic structure through advanced preparation technologies, are known as promising ways to overcome stability challenges.
How does a perovskite light absorbing layer improve photon capture and recombination?
This configuration improves electron collection and minimises charge recombination by shortening the carrier travel distance. The structure efficiently facilitates light absorption via scattering, resulting in enhanced photon capture and improved charge separation. The thickness of the perovskite light-absorbing layer is normally up to 300 nm.