From University of Surrey 25/09/23

Is the sun going down on silicon solar cells? Credit: Getty Images

A scientific breakthrough brings mass production of the next generation of cheaper and lighter perovskite solar cells one step closer thanks to researchers at the University of Surrey’s Advanced Technology Institute (ATI).

A nanoscale ‘ink’ coating of aluminium oxide on metal halide perovskite improves the potential of this emerging photovoltaic technology and stabilises the drop in energy output which currently plagues perovskite technology.

Hashini Perera, lead author of the study at the University of Surrey said:

Technical: Molecular structure of a) Me-4PACz and b) PFN-Br. c) A high-resolution TEM and d) the related SAED pattern of the Al2O3 NPs used in this study. e) Scanning electron micrograph indicating the surface coverage of Al2O3 NPs on Me-4PACz-coated ITO. f) Photographs showing the poor wettability of perovskite on bare Me-4PACz which is significantly improved upon modification with PFN-Br and Al2O3. Credit: Solar RRL

“In the past, metal oxides have been shown to either benefit or degrade the performance of perovskite solar cells.”

“We’ve identified aluminium oxide which can improve performance and minimises the drop in efficiency during conditioning of perovskite solar cells.”

“We show that this nano-oxide allows a uniform coating of perovskite material on highly promising organic molecules that self-assemble on a surface and improve device output.”

Dr Imalka Jayawardena, from the University of Surrey’s Advanced Technology Institute said:

“Performance limits of traditional solar cells are why researchers are switching to examining perovskite as the next-generation solar technology, especially as applications both terrestrial and in space are rapidly growing.”

Technical: a) Roll-off angle measurements of Cs0.05MA0.15FA0.8Pb(I0.85Br0.15)3 on ITO/Me-4PACz, ITO/Me-4PACz/PFN-Br, and ITO/Me-4PACz/Al2O3. The photographs have been captured at the point at which roll-off is initiated. The angles are indicated as a guide to the eye. b) Photographs from roll-off angle measurements indicative of the dewetting of the precursor on Me-4PACz and improved wetting on Me-4PACz modified with PFN-Br and Al2O3 NPs. c) O 1s XPS spectra, d) AFM height images, and e) CPD mapping of ITO, ITO/Me-4PACz and ITO/Me-4PACz/Al2O3. Credit: Solar RRL

“Our key development in solar panel technology shows a cost-effective approach to scaling of perovskite solar cells, a development which could help countries around the world to reach their net zero targets faster.”

Prof. Ravi Silva, corresponding author from the ATI, University of Surrey said:

“Solar and wind energy costs are rapidly decreasing based on technology improvements, to the level where worldwide over 80% of all new additional power generation capacity is based on renewables.”

“The levelised cost of solar electricity is now cheaper than most other power generating sources.”

“With the maturing of perovskite solar modules, the levelised cost of electricity will significantly decrease further, and that is why this is such an exciting area to work.”

More info

Paper

You may also be curious about:

Leave a Reply

Your email address will not be published. Required fields are marked *

Subscribe to our weekly newsletter

Recieve the latest innovation, emerging tech, research, science and engineering news from Superinnovators.