Research from the University of Surrey reveals scientists are able to improve the efficiency of solar cells more than threefold
·The solar cells are a flexible, lightweight and environmentally-friendly and have the capacity to be printed in different colours and shapes
·The solar cells are a contrast to their inorganic competitors as they also convert efficiently indirect sunlight, making them ideal material to power devices on the move, such as for the Internet of Things
Researchers at the University of Surrey have achieved record power conversion efficiencies for large area organic solar cells. In recent years scientists have been attempting to increase the efficiency of these cells to allow commercial applications such as integration into a building’s glass façade, generating electricity to power the building.
The research was led by the University of Surrey’s Advanced Technology Institute (ATI) in collaboration with Oxford University, Aristotle University of Thessaloniki (Greece), and University of Stuttgart (Germany). The project is part of SMARTONICS, a four-year European Commission FP7 programme aimed at developing large-scale pilot lines for the fabrication and printing of organic polymer solar cells.
The results, published in Advanced Electronic Materials, demonstrate that dependencies between the chemical and physical properties of the photoactive layer’s building blocks within organic solar cells determine the efficiency of these solar cells. By using a well-known and low cost electron donating material (P3HT) in combination with an electron accepting material (ICBA) for the photosensitive layer of the organic solar cells, the research team discovered that different ICBA samples consist of dissimilar isomeric mixtures (isomers are molecules with the same number of atoms of each element, but with the atoms differently arranged). These characteristics are critical for the formation kinetics and spatial arrangement of P3HT and ICBA in their photosensitive blend and lead to varying power conversion efficiencies.
Tailoring the fabrication process based on these findings, the research team were able to improve the efficiency of their solar cells from 2.2% up to 6.7%. This is one of the highest efficiencies to have been reported for P3HT blends on a large-area device.
Professor Ravi Silva, corresponding author and Director of the ATI commented, “Solar cells made of organic materials have a number of benefits over traditional inorganic solar cells – and more so when the organic is P3HT, the fruit fly for organic solar cells. Not only are they flexible, lightweight and environmentally-friendly, they are also design-friendly because they can be semi-transparent and printed in different colours and shapes. In addition, in contrast to their inorganic competitors, they convert efficiently indirect sunlight, which makes them an ideal material to power devices on the move, such as for the Internet of Things. Our group is looking to expand research in this field, with more PhD students and researchers, which will have such a positive impact on society.”
PhD student Dimitar Kutsarov, the paper’s lead author, said, “The research represents a significant step forward in the understanding of the characteristics of materials with isomeric properties, which will lead to a future improvement of the efficiency of organic solar cells. We know now how important the spatial arrangement of the isomeric molecules is and will, therefore, be able to push the efficiency of P3HT-based solar cells further. Our findings will be used for the fabrication of meters long organic solar cells as part of the successful completion of the collaborative European project SMARTONICS.”
The Latest on: Organic solar cells
via Google News
The Latest on: Organic solar cells
- Australian researchers build new AI that could solve challenge of cheaper solar poweron November 10, 2020 at 8:35 pm
Australian researchers unveil a new artificial intelligence platform that fast-tracks the development of cheaper and more efficient solar cells.
- Clear Route to All Land Vehicles Being Solar, Reports IDTechExon November 5, 2020 at 6:22 am
The good news keeps coming. The IDTechEx report, "Solar Vehicles 2021-2041" explains and forecasts. In October 2020, University of York in ...
- UK breakthrough promises solar and OLED gainson November 5, 2020 at 3:02 am
Scientists at Swansea University have devised a method to identify 'charge traps' in organic semiconductors that could improve solar cells and OLED screens ...
- Scientists develop method to detect charge traps in organic semiconductorson November 4, 2020 at 2:26 am
Scientists at Swansea University have developed a very sensitive method to detect the tiny signatures of so called 'charge traps' in organic semiconductors.
- Europe Next-generation Organic Solar Cell Market 2020 Worldwide Opportunities, Driving Forces, COVID-19 Impact Analysis, Future Potential 2028on November 2, 2020 at 6:56 pm
CRIFAX added a report on 'Europe Next-generation Organic Solar Cell Market, 2020-2028' to its database of market research collaterals consisting of overall market scenario with prevalent and future ...
- Increasing the efficiency of organic solar cellson November 2, 2020 at 4:00 pm
Organic solar cells are cheaper to produce and more flexible than their counterparts made of crystalline silicon, but do not offer the same level of efficiency or stability. Researchers demonstrated ...
- Solar cells of the futureon November 2, 2020 at 2:17 am
(Nanowerk News) Organic solar cells are cheaper to produce and more flexible than their counterparts made of crystalline silicon, but do not offer the same level of efficiency or stability. During his ...
- Highly conducting, stable carbon cathode could bring down production costs of next-generation solar cellson October 30, 2020 at 9:05 am
Scientists have developed a highly conductive and stable carbon cathode with low sheet resistance comparable to that of gold that can be processed at room temperature. It could reduce the cost of ...
- How to design organic solar cell materialson October 27, 2020 at 12:38 pm
How to design organic solar cell materials Date: October 27, 2020 Source: Max Planck Institute for Polymer Research Summary: Scientists have recently scrutinized organic solar cells and derived ...
via Bing News