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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

A guide and a friend
2016-12-12

Description:Khothatso Mokone  Tags: Khothatso Mokone  longdesc=

Louzanne Coetzee and Khothatso Mokone.
Photo: Charl Devenish

Behind every successful Paralympic athlete is a guide, and behind blind athlete Louzanne Coetzee is none other than former Kovsie student Khothatso Mokone.

Mokone, who is a sports journalist and freelance photographer, says he is not entirely sure that his busy schedule is very balanced, but he tries to ensure he squeezes as much as possible into his day. One thing he always makes time for is his training. “As a young person, I try to take every opportunity that comes my way,” he says.

This young runner, who has been Coetzee’s guide for the past eight months, says that every race they have run together thus far has always been better than the last. “The partnership grows harmoniously every day. We talk about almost everything there is, not only running,” Mokone says.

Mokone guided Coetzee in the 1 500m of the Paralympics in Rio de Janeiro in September this year when she was disqualified. 

Mokone, who loves comedy and Dubai, is inspired by SAfm journalist and presenter Ashraf Garda. “He talks a lot about current issues that affect our country and I like his style of presenting. He is a good orator.”

Something people may not know about him is that he always walks around hopeful that the best is yet to come. “When I walk down the street, I walk with confidence and people think I have made it in life not knowing that I only have hope for a better tomorrow,” he says.

Although he is not yet as successful as he would like to be, Mokone encourages the youth to “open their eyes and ears to set realistic goals and work with patience to achieve each goal, whether short or long term”.

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