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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

Projects of the South Campus inspire excellence
2014-12-18

The University of the Free State’s (UFS’s) South Campus in Bloemfontein runs several projects to make a difference in the lives of learners and educators in the central region. These projects are based on the very essence of the UFS – to ‘inspire excellence, change lives’.

Three projects which have been very successful since the outset are the UFS Schools Partnership Project, the Family Math and Family Science Project and the Internet Broadcast Project.

The Schools Partnership Project attempts to empower teachers by improving their teaching skills in critical Gr 10 – Gr 12 subjects (Physical Science, Mathematics and Accounting).

Poorly performing schools are invited to join in the programme. A mentor, providing guidance to teachers in the planning of lessons, transferring knowledge and creating a healthy learning environment in the classroom, is assigned to each subject teacher. Management and leadership skills are also improved.

Hercules Dreyer, Programme Manager, says the success of the programme can be seen in the lessons, the results and the progress which have been made.

“In 2013, the pass rate of participating schools has grown from 71.5% to 85%. We had an increase in donors and the project went from 22 schools with 12 mentors in 2013 to 72 schools and 34 mentors in 2015.”

The UFS Family Math and Family Science Project, which is already in its sixth year of existence, are extremely popular. This intervention programme focus on bringing about a better understanding of Mathematics and Science in learners, teachers and parents.

Dr Cobus van Breda, Programme Director of the Family Math and Family Science Project, says that judging by the feedback from teachers, it is evident that the programme is growing from strength to strength and that it is making a real difference in Mathematics and Science education in the early school years.

The UFS’s Internet Broadcast Project (IBP) has thus far received four awards for their successes. In this project, lessons in Mathematics, Accounting and Physical Science are broadcasted from the UFS’s South Campus through internet presentations to schools in rural areas.

“To date, the IBP catalogue contains over 2 000 video lessons and in 2013 alone, the 68 schools accessed and used these videos 69 305 times. The project has the potential to reach more than 40 000 learners and 1 765 teachers every week,” says Sarietjie Musgrave, Project Manager.

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