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Research explores solution for electricity generation

05 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs

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

Out-of-the-box thinking a plus for next generation of agribusiness leaders

2017-07-07

The winners of the 12th IFAMA International Student
Case Competition from Team South Africa are from
the left: JW Swanepoel, University of the Free State,
Melissa van der Merwe, University of Pretoria,
Heinrich Jantjies, Stellenbosch University, and
Johann Boonzaaier, also from Stellenbosch University.
Photo: Supplied

The International Food and Agribusiness Management Association’s International Student Case Competition, in its 12th year, brings together students from around the world to demonstrate their investigative and problem-solving skills to provide innovative solutions to practical problems.

JW Swanepoel, a PhD student at the Centre for Sustainable Agriculture at the University of the Free State (UFS) was part of an advanced case study team, representing South African universities, who won IFAMA’s International Student Case Competition. Swanepoel also presented results from his PhD study at IFAMA’s conference in Miami, Florida, where the winners were announced.

Competition a global stage to showcase solutions
The competition provides a global stage for students and their associated universities to showcase the next generation of agribusiness leaders.

This year the featured agribusiness was Bayer Crop Science. Although this company managed to expand its global footprint through its Food Chain Partnership, it faced some challenges to expand in emerging economies through small-scale farmers. Being from the African continent, Swanepoel and his team not only understood Bayer’s unique challenge but could also pre-empt some of the potential problems faced by agribusinesses that wanted to grow their footprint in emerging economies. This provided them with a competitive advantage in going head-to-head with some of the best universities in the world such as Purdue, Wageningen, Michigan, Texas A & M and Santa Clara to mention just a few.

The South African team’s presentation “Selling Lindiwe’s story” told the story of a small-scale woman cassava farmer in Mozambique who, after the death of her husband, became the main breadwinner. The South African team indicated how Bayer could play a major role in not only selling chemicals to these farmers but even more importantly to change the stories of small-scale farmers like Lindiwe. They recommended a strategic partnership with AB InBev as the main buyer for the cassava produced by these small-scale farmers, as a cheaper beer base substitute. They also recommended a local partner (Value Chain Insights) that understood the political, social and economic environment of these countries to facilitate the relationships between Bayer and its small-scale farmers.

Understanding the challenge a competitive advantage
According to the panel of judges, the innovative approach and motivations for investing in strategic partnerships with AB InBev and Value Chain Insights went beyond financial benefits, to include corporate social responsibility and rural development. Lindiwe’s story was, however, the decisive factor. The South African team was the only team to put a face and a story to the often invisible small-scale farmers.

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