Perovskite solar cell on steel substrate
Cette publication existe aussi en Français
Researchers in Australia have boosted the efficiency of perovskite photovoltaic (PV) solar cells built on a steel substrate.
While many perovskite solar cells (PSCs) are built on rigid glass substrates, demonstrating perovskite cells on other types of surfaces such as steel give rise to new applications such as integrating solar panels into buildings.
The efficient PSCs on steel use an indium tin oxide interlayer as a barrier against iron diffusion from the steel substrate, and can be improved by using an n-octylammonium bromide passivation layer, achieving a power conversion efficiency of 17.1%.
Previous PV cells reported 11.4% efficiency in 2018 using a dielectric/metal/dielectric transparent top electrode, while in 2019, a cell on a flexible stainless substrate used a 200/100 nm SiO2/Au stack as an interlayer between the steel and the perovskite cell, achieving an efficiency of 3.45%.
In early 2022, researchers in the Netherlands showed a 15.2% efficient n-i-p PSC on a Ni-plated high-gloss steel substrate using polyamide-imide (PAI) planarization coating to moderate the surface roughness of steel and by applying a Ti/indium tin oxide (ITO) layer as the electrode on the substrate side.
- Metal halide perovskite process boosts solar cell lifetime
- Carbon electrode for roll-to-roll perovskite solar cell .
- Lead perovskite boosts solar cell efficiency over 25 percent
After this work, the same authors reported a 16.5% efficient cell on steel using the similar steel-substrate preparation as before except the polarity in this instance was of p-i-n instead of n-i-p.
The work at the University of Sydney by Jianghui Zheng used an ITO interlayer on a commercial rigid steel roofing panel, but can also be applied on flexible steel material.
Characterization and computer simulation showed that cells without an ITO interlayer suffer from low PCEs due to iron diffusion from the steel substrate into the perovskite cell. A device with an 80 nm ITO interlayer achieved an efficiency of 15.3%, while the control device without an interlayer had an efficiency of 6.5%.
Further surface passivation using n-octylammonium bromide (n-OABr) was found to enhance quality of the perovskite absorber to 17.1%, evidenced by enhanced photoluminescence intensity and carrier lifetime.
Zheng et al., Efficient perovskite solar cell on steel enabled by diffusion barrier and surface passivation, Cell Reports Physical Science (2023), https://doi.org/10.1016/j.xcrp.2023.101543
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
