Scientists at Oxford University have developed a solvent system with reduced toxicity that can be used in the manufacture of perovskite solar cells, clearing one of the barriers to the commercialisation of a technology that promises to revolutionise the solar industry.
Perovskites – a family of materials with the crystal structure of calcium titanate – have been described as a ‘wonder material’ and shown to be almost as efficient as silicon in harnessing solar energy, as well as being significantly cheaper to produce.
By combining methylamine and acetonitrile, researchers have developed a clean solvent with a low boiling point and low viscosity that quickly crystallises perovskite films at room temperature and could be used to help coat large solar panels with the material.
The results are published in the Royal Society of Chemistry journal Energy & Environmental Science.
Dr Nakita Noel of Oxford’s Department of Physics, lead author of the study, said: ‘At the moment, there are three main solvents used in the manufacture of perovskite solar cells, and they are all toxic, which means you wouldn’t want to come into contact with them.
‘Additionally, the most efficient perovskite solar cells are currently made through a process called solvent quenching – a technique that is not easily transferred from lab-scale deposition techniques to large-scale deposition techniques. While vapour deposition of these materials can overcome this problem, it will come at additional costs. One of the main selling points of this material is that it is cheap and can be easily solution-processed.
‘We have now developed the first clean, low-boiling-point, low-viscosity solvent for this purpose.’
Dr Noel added: ‘What is really exciting about this breakthrough is that largely reducing the toxicity of the solvent hasn’t led to a reduction in the efficiency of the material in harnessing solar energy.’
In recent years, perovskite-based solar cells have raced to the front of emerging photovoltaics, already competing on efficiency against well-established solar technologies such as the inorganic thin-film and multi-crystalline silicon used in solar panels around the world. Perovskites also have the shortest ‘energy payback time’ – the time taken for a material to save the same amount of energy that was expended in its production. It has been said that the sun supplies enough power in 90 minutes to meet the world’s total energy needs for a year
Study co-author Dr Bernard Wenger, also of Oxford’s Department of Physics, said: ‘While we are probably still a few years from seeing perovskite-based solar panels on people’s roofs, this is a big step along the way.’
The Latest on: Perovskite solar cells
via Google News
The Latest on: Perovskite solar cells
- Solar Encapsulation Market to Develop at 10.28% CAGR by 2026 | Market Research Future (MRFR)on March 4, 2021 at 10:06 am
Key companies profiled are Hangzhou First Pv Material Co. Ltd, Specialized Technology Resources Inc, Sanvic Inc, Solutia Inc, E.I. Dupont De Nemours & Co., Renewsys, Kuraray Europe Gmbh, Dow Corning ...
- Bio-inspired scaffold sequesters lead in damaged perovskite solar cellson March 3, 2021 at 10:19 pm
UK-based scientists have formulated perovskite solar cells that can sequester soluble lead ions if the cell suffers damage. By minimising the chance of lead leaking into the environment, ...
- A common optical approach to thickness optimization in polymer and perovskite solar cellson March 2, 2021 at 2:56 am
The structure of experimentally designed solar cells was optimized in terms of the photoactive layer thickness for both organic bulk heterojunction and hybrid perovskite solar cells. The photoactive ...
- MIT researchers improve perovskite-based solar panel efficiencyon March 1, 2021 at 3:03 am
Today, solar panels are typically made of silicon, but in the future, they could be manufactured from a different material that offers more efficiency and lower manufacturing cost. The material ...
- Perovskite Solar Cell Market Latest Industry Growth, Trends, Revenue, Key Suppliers and Demand Projections by 2028, Fortune Business Insightson February 28, 2021 at 10:55 pm
The MarketWatch News Department was not involved in the creation of this content. Mar 01, 2021 (The Expresswire) -- The global perovskite solar cell market size is poised for steady expansion as ...
- New Design Improves Efficiency of Next-Generation Perovskite Solar Cellson February 27, 2021 at 4:15 pm
Reducing internal losses could pave the way to low-cost perovskite-based photovoltaics that match silicon cells’ output. Perovskites are a leading candidate for eventually replacing silicon as the ...
- Metal-perovskite-metal back contact solar cell with 4.31% efficiencyon February 26, 2021 at 12:51 am
Researchers at Chitkara University in the Indian state of Punjab have proposed an electrostatically-doped back-contact design for perovskite-based solar cells that overcomes the fabrication and ...
- UC Berkeley: The Frontiers Of Knowledge Award Goes To Paul Alivisatos And Michael Grätzelon February 24, 2021 at 7:17 pm
The BBVA Foundation Frontiers of Knowledge Award in the Basic Sciences category has gone in this thirteenth edition to Paul Alivisatos (University of California, Berkeley, United States) and Michael ...
- Researchers improve efficiency of next-generation solar cell materialon February 24, 2021 at 8:01 am
... many other candidate replacements is that it forms extremely thin layers while still efficiently capturing solar energy. “Perovskite cells have the potential to be lightweight compared to silicon, ...
via Bing News