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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

Dr Mercy Oduyoye receives an honorary doctorate for changing how women are viewed in theology
2015-07-08

Dr Mercy Oduyoye.
Photo: Johan Roux

Dr Mercy Amba Oduyoye received an honorary degree from the UFS Faculty of Theology in acknowledgement of the trailblazing work she has done in the field of African women’s theology. Known as the Mother of African Women’s Theology, Dr Oduyoye is the first black woman in Africa to have received a degree in theology. Ever since then, she has been changing views on gender in theology across the globe. Still at the office at the age of 82, Dr Oduyoye’s life work has centred on two areas: her work with churches, and her work with female theologians.

Women in religion and culture
Following the 2015 Winter Graduation Ceremony on the Bloemfontein Campus, during which Dr Oduyoye received her honorary degree from the University of the Free State (UFS), she presented a lecture on women in religion and culture at the Faculty of Theology. Dr Oduyoye gave a brief overview of her involvement in organisations since the early 1970s to eliminate patriarchal structures in theology, in order to produce a relationship of partnership between women and men. An area that lies especially close to Dr Oduyoye’s heart is that of storytelling, and the use of language. Therefore, a driving force behind her work has been the question: “How do we communicate what we believe as Christians?”

Writing in a way people can understand
This question led Dr Oduyoye on her journey to vernacularise theological language, and it became her mode of writing. “Very seldom will you find the classical or official theological language in my writing, because I’m writing as if I’m speaking to a youth group, a women’s group – or even my grandmother.” In this way, communication became her focal point to present Christianity in such a way that people can understand it, thus rendering it relevant to the situation in Africa.

Changes toward inclusive language
Dr Oduyoye has gone on to author four books and over eighty articles on theology from a feminist perspective. And after toiling for many years, Dr Oduyoye can now see the changes emerging – especially in the US – as Bibles, lectionaries, and hymns are increasingly adopting an inclusive language, giving women a presence and voice within the church.

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