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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

Researchers urged to re-emphasise regeneration of grassroots
2013-10-23

23 October 2013

Institutions of higher learning have a critical role to play in the promotion and protection of indigenous knowledge systems. This is according to Dr Mogomme Masoga, UFS alumnus and Senior Researcher with the Development Bank of Southern Africa (DBSA).

Dr Masoga was addressing the 6th annual Indigenous Knowledge Systems (IKS) Symposium at the University of the Free State’s Qwaqwa Campus.

“The time has come for local communities rich with knowledge to be taken seriously by the researchers doing their work in those respective communities,” argued Dr Masoga.

“Power relations between the researcher and the communities involved in the research process should be clarified. The same applies to the ownership and control of knowledge generated and documented in a community.

“There is an increasing need for democratic and participatory development in our communities. This can be achieved by giving primacy to the interests, values and aspirations of the people at large. There must be a radical move from prevailing paradigm of development that suffers from relying on coercion and authoritarianism. There is a need to associate development with social needs. This will give validity and integrity to the local communities, thereby giving confidence to the leaders and their constituencies.”

Dr Masoga said that the time has come for African universities in particular to “de-emphasise factors that monopolise attention today. Factors like debt crisis, commodity prices and foreign investment, among others, must be replaced by emphasis on the regeneration of the grassroots. Many African universities and research institutions have not lived up to their responsibilities as guiding lights to the continent. However, all is not lost.

“The current global race for knowledge works against so-called developing countries, especially in Africa. There is a far greater need to have a code of ethics drawn up for researchers engaging with local communities, to ensure the promotion and protection of indigenous knowledge systems.”

Meanwhile, a cross-section of papers were also delivered during the symposium. These ranged from Moshoeshoe’s lessons in dealing with poverty alleviation as presented by Dr Samuel Mensah, Department of Economics, to indigenous grasses of Qwaqwa by Prof Rodney Moffett, Department of Plant Sciences. Also presenting lectures were Phephani Gumbi, African Languages; Tshele Moloi, School of Mathematics; Natural Sciences and Technology Education and Dr Tom Ashafa (Plant Sciences).

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