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05 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Lucas Erasmus and Prof Hendrik Swart
Lucas Erasmus and Prof Hendrik Swart (right) are working on a joint project with Ghent University to find an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics.
With a constant increase in the price of electricity, any innovation to replace this necessity in our daily lives is welcome. 

The University of the Free State (UFS), whose vision is supported by an element of innovation, welcomes the recent agreement between its Department of Physics and Ghent University.

Attractive solution

Not only will this research – which aims to develop the materials necessary for transparent solar panels – enlarge the international research footprint of the UFS, but it is also an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics without affecting their appearance.

According to Prof Hendrik Swart, from the UFS Department of Physics, the agreement between the two universities entails a joint doctoral degree in which both universities will supervise the project and the awarding of the doctorate. The student, Lucas Erasmus, will conduct research at both institutions.

Transparent solar panel

The idea with the research is to develop glass that is transparent to visible light, just like the glass you find in the windows of buildings, motor vehicles, and mobile electronic devices. However, by incorporating the right phosphor materials inside the glass, the light from the sun that is invisible to the human eye (ultraviolet and infrared light) can be collected, converted, and concentrated to the sides of the glass panel where solar panels can be mounted. This invisible light can then be used to generate electricity to power these buildings, vehicles, and electronic devices. The invention is therefore a type of transparent solar panel.

Implemented in cellphone screens

This technology can be implemented in the building environment to meet the energy demands of the people inside the buildings. 

The technology is also good news for the 4,7 billion cellphone users in the world, as it can be implemented in the screens of cellphones, where the sun or the ambient light of a room can be used to power the device without affecting its appearance. 

Another possible application is in electric cars, where the windows can be used to help power the vehicle.

Low-income housing

Erasmus added: “We are also looking at implementing this idea into hard, durable plastics that can act as a replacement for zinc roofs.” 

“This will allow visible light to enter housing, and the invisible light can then be used to generate electricity. The device also concentrates the light from a large area to the small area on the sides where the solar panels are placed; therefore, reducing the number of solar panels needed and, in return, reducing the cost.”

The technology will take about a decade to implement.

“This study is currently ongoing, and we are experimenting and testing different materials in order to optimise the device in the laboratory. After this, it needs to be upscaled in order to test it in the field. It is truly the technology of the future,” said Erasmus.

Video: Barend Nagel

News Archive

UFS on the right track with transformation - Fulbright scholars
2010-08-27

 
Pictured from the left, are: Dr Wilmore-Schaeffer, Rev. Dr Streets and Ms Leah Naidoo (Senior Administrator of the Institute).
Photo: Mangaliso Radebe

“I think the university is not only on the right track but can really become a model for how to negotiate certain difficult processes, such as transformation, within a short period of time. I think it can become a model, not just for other universities, but also for the world.”

This was said by Dr Rozetta Wilmore-Schaeffer, who together with Rev. Dr Frederick J. Streets, recently worked with the International Institute for Race, Reconciliation and Social Justice at the University of the Free State (UFS) as Fulbright specialists. They helped the institute come up with ideas in terms of making the changes that are necessary for the transformation of the university.

“There is a great deal that has already been done despite the sense of urgency and impatience, and I think there is a great deal more to be done,” said Dr Wilmore-Schaeffer.

“I think this sense of urgency comes from those who are involved in the process of looking at the destination, the place that they want to be at, and feeling that they are very far from it.”

During their visit here the two had numerous conversations with both staff members and students.

“I have been most impressed by the students who I think are ready to make changes in many different ways – I am talking about students of all racial groups and gender. The fact that they are referring to transformation as ‘their struggle’ shows that they are prepared to make changes,” said Dr Wilmore-Schaeffer.
She, however, cautioned that there were those who were still against transformation taking place at the university.

“I think there is still some resistance from some quarters on both sides of the fence and I would expect that at this point in time. I think what is really hopeful is that there are so many students who are ready to make the changes, who are making the changes, who are struggling with issues around making the changes; and I think that is really the hope for the university and the hope for the future,” she said.

“The resistance is complex,” added Rev. Dr Streets. “It is around a fear for the future, the loss of identity on the part of both black and white students, and the desire for cultural continuity amongst white students as well as amongst a variety of ethnic black students.

“The resistance is about learning that you are not the only kid on the block anymore and how you then overcome the feeling of realising that you are not the dominant person anymore and that your culture is not the dominant culture anymore.”

They have given a preliminary report of their findings to the Rector and Vice-Chancellor of the UFS, Prof. Jonathan Jansen, which will be followed by a more detailed report later on.
 

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