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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

Moeletsi Mbeki discusses South Africa’s political economy
2012-08-17

At the guest lecture was, from the left: Johann Rossouw, lecturer in the Department of Philosophy, Mr. Moeletsi Mbeki, and Prof. Pieter Duvenage, Head of the Department of Philosophy.
Photo: Johan Roux
17 August 2012

South Africa’s ongoing problems do not have their origin in the apartheid dispensation but in the British colonial period. This is according to the well known businessman and political analyst, Mr Moeletsi Mbeki, who was speaking during a guest lecture at the University of the Free State.

Mr Mbeki said the high unemployment rate among Blacks arose from the destruction of the Black small farming class in the last third of the 19th century to provide cheap labour to the developing mining sector. He said the notorious Land Act of 1913 was not the root of Black people’s loss of land but merely the legal formalisation thereof. Mr Mbeki emphasised that as long as it was argued that South Africa’s problems arose during the apartheid dispensation, problems would remain unsolved.

Regarding South Africa’s future, Mr Mbeki argued that three issues in particular were important – South Africa’s industrialisation, which ground to a halt in the 1970s, should be revived; the large scale training of industrialists with special emphasis on mathematics, science and the broader education system; and post-nationalist politics, of which parties such as Zimbabwe’s MDC, Zambia’s MMF and Mauritius’s MMM were outstanding examples.

The guest lecture was presented by the Department of Philosophy. More than 200 people attended the lecture and participated enthusiastically in the question and answer session. Afterwards, Mr Mbeki said he was impressed with the high level of the questions asked by students, which he said gave him hope for South Africa’s future.

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