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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 receives multimillion rand international funding for Advancement
2013-01-21

21 January 2013

We are one of four South African universities that have been selected to take part in a multimillion-rand programme to bolster private fund-raising and Advancement efforts.

The UFS will receive US$640 000 (R5 612 800) over a period of five years to use in advancement efforts.

In total, the US-based Kresge Foundation will make US$2.5 million available to the four universities, which includes the UFS, Durban University of Technology (DUT), Tshwane University of Technology (TUT) and the University of Johannesburg (UJ), over the next five years as part of a joint initiative with Inyathelo: The South African Institute for Advancement, to support the long-term financial sustainability of higher education institutions in South Africa.

Kresge will also provide programmes and support aimed at enhancing student access to universities and improving graduation rates.

Bill Moses, who directs Kresge’s education programme, says declining government support means that South African university officials need to tap into diversified philanthropic and private funding if they want to enhance their institutions’ ability to serve students better. “Stronger Advancement skills are critical to their success and ultimately to getting more South African students into universities and completing degrees. Advancement is not just about raising funds. It is the practice of building, maintaining and improving support, skills and other resources to ensure the sustainability of an institution,” explains Moses.

 This latest Kresge initiative follows the success of a five-year partnership with Inyathelo that helped five high-profile South African institutions - the University of the Witwatersrand (Wits); the University of Pretoria (UP); the University of the Western Cape (UWC); the Cape Peninsula University of Technology (CPUT) and the Children’s Hospital Trust - increase their private fund-raising revenue threefold. The four universities will receive additional funding over the next five years and will serve as mentors to the new group of institutions.

In April last year, Kresge announced a new commitment to South African higher education that builds on its efforts in the United States to improve university access and help students succeed academically. Their ‘Promoting access and success at South African universities’ programme will seek to strengthen pathways to and through universities, especially for students who are often unprepared for university study. Moses says enhancing the ability of universities in South Africa to graduate the next generation of knowledge workers, will make it possible for the country to compete more effectively in the global economy. “Access to higher education in South Africa has improved dramatically since the end of Apartheid. A doubling of enrolment since 1994 has, however, contributed to serious challenges, including under-prepared students and disappointing graduation rates. We are confident that our programme will help address some of these obstacles to success,” says Moses.

Kresge has already funded several efforts that support its interest in strengthening pathways to and through universities this year, including a grant to the University of the Free State to expand the South African Survey of Student Engagement, as well as funding to the University of Pretoria to support a conference in January, which will highlight opportunities to promote access and success at South African universities.

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