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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 mind shift needed in agriculture in Africa
2010-12-02

Prof. Frans Swanepoel (Centre for Sustainable Agriculture and Rural Development), Prof. Monty Jones, Prof. Driekie Hay (Vice-Rector: Teaching and Learning), Prof. Alice Pell (Cornell University, USA), and Prof. Izak Groenewald (Director of the Centre for Sustainable Agriculture and Rural Development) at the inaugural lecture of Prof. Jones as Professor Extraordinary. 
- Photo: Stephen Collett

Food stability is essential for stability in all countries around the world. Radical interventions, and not incremental changes, are necessary to end hunger and poverty in Africa, said Prof. Monty Jones, Professor Extraordinary in the Centre for Sustainable Agriculture and Rural Development at the University of the Free State (UFS), in his inaugural lecture.

Prof. Jones is Executive Director of the Forum for Agricultural Research in Africa (FARA) and Chairperson of the Global Forum on Agricultural Research (GFAR). In his lecture he focused on the contribution of agricultural research to development and food security in Sub- Saharan Africa.

He said Africa is not known for good politics to promote food production. Countries under invest in research, education, knowledge management, agriculture finance, etc. There is also uncertain and restricted access to land. He specially mentioned women’s access.

Sub- Sahara Africa moved from being a net exporter of food to a net importer of food (28%). “Government spending on agriculture and transport went down and stagnated. A mind shift is necessary. Africa has the resources. We must take advantage of the opportunities,” he said, and added: “Africa must create visionary and inspirational leaders and managers who can drive developmental issues.”

Prof. Jones emphasised that fact that nutritional security is just as important as food security. The number of hungry people has grown to more than a billion in 2009. Hunger is the most severe in the developing world, especially Africa. Added to this is Africa’s population growth that i s also higher than the rest of the world. It is estimated that the demand for food in Africa will double in the next 40 years.

“Research and development alone cannot win the war against hunger in Africa. Everyone has a role to play,” he said.
– Leatitia Pienaar.

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