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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

What did they learn at Stanford University?
2015-11-04

    

Members of the cohort with the
Vice-Chancellor and Rector of the UFS,
Prof Jonathan Jansen

Every year, since 2012, six second-year Kovsies are selected to take part in the elite Stanford Sophomore College Programme at the prestigious Stanford University in the United States. The University of the Free State and Oxford University are the only non-Stanford members of this exclusive course.

From 31 August to 15 September 2015, Farzaana Adam, Cornel Vermaak, Precious Mokwala, Tristan Van Der Spuy, Anje Venter, and Naushad Mayat undertook a three-week long academic exploration of multidisciplinary topics. These students attended seminars aligned with their respective fields of study from which they accumulated a wealth of knowledge.

This year’s cohort reflects on what they learned at Stanford University:

The significance of analyzing technology

One of the key points gathered by Farzaana Adam from the seminar, ‘Great Ideas in Computer Science’, was the necessity not to approach technology at face value. “Computer science goes beyond the technological products and social networks. By analysing the concepts underlying these technologies, many discoveries which have benefitted many fields of study have been made possible.”

Critical thinking in Arts and Science


“By combining different fields of study, one can obtain a greater perspective on the relevant fields,” said Cornel Vermaak, about what he garnered from a seminar titled ‘An Exploration of Art Materials: An intersection between the Arts and Science’. “This greater perspective enables one to evaluate problems critically,” he added.

Visual media substitutes oral narratives

“We were also taught different ways in which to interpret images, and how images influence society. Photography is a way to tell a story without actually having to say anything,” reflected Precious Mokwala, on ‘Photography: truth or fiction’

A lesson in business economics


Tristan Van Der Spuy received pointers pertaining to the stock exchange market    in ‘A Random Walk Down Wall Street’. “We looked at stock markets, and what influenced the stock prices of multiple companies, taking note of what should be looked at when investing in a company.”

Race relations and representation

‘The New Millenium Mix: Crossings between Race and Culture’ exposed Anje Venter to a global perspective on identity. “We explored the new generation of people that have mixed races and cultures, and how they are depicted in media and art.  We analysed the discrepancies and stereotypes of these depictions through film, novel, and short story studies, as well as through field trips to museums and art exhibitions.”

Overcoming the HIV/AIDS endemic


Naushad Mayat realised that “more teamwork and transparency between governments, chemists, social workers, and clinicians will be required for us to stem the flow [of HIV/AIDS],” in view of what he learned in a seminar on ‘HIV/AIDS: A Response to the AIDS Epidemic in the Bay Area’. “It is a daunting task. For the current generation of youth to tackle this epidemic now, we must stand together and be counted,” he added.



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