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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 Ground Studies Laboratory receives accreditation to international standard
2016-03-18

Description: IGS Tags: IGS

Lore-Mari Deysel, Deputy-Director of the institute for Groundwater Studies.
Photo: Charl Devenish

The Institute for Groundwater Studies (IGS) Laboratory at the University of the Free State is on equal footing with international testing labs. With its accreditation in March 2016 by SANAS (South African National Accreditation System), the IGS Laboratory now officially meets global standards.

Quality of water

The IGS Laboratory mainly analyses the quality of water samples. When it was originally established in 1989, the lab’s central function was to conduct testing for researchers at the institute itself. “After the public and water boards realised their need to analyse water samples, the IGS Laboratory expanded to deliver a service to these clients,” says Lore-Mari Deysel, Deputy-Director of the institute.

Since suppliers and regulatory authorities will not accept test or calibration results from a lab that is not accredited, the IGS initiated the accreditation process.

Accreditation to international standard


In order to be deemed technically competent and able to receive accreditation, labs must meet the ISO/IEC 17025 standard. ISO/IEC 17025 was first issued in 1999 by the ISO (International Organization for Standardization) and the IEC (International Electrotechnical Commission).According to Deysel, this is the single most important standard for calibration and testing laboratories around the world.

“Laboratories that are accredited to this international standard have demonstrated that they are technically competent and able to produce precise and accurate test and/or calibration data. Furthermore, it demonstrates that the university has the capacity to supply valuable and reliable services alongside the academy,” Deysel says.

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