Categories: NewsTechnology

Researchers at University of Arkansas establish new Solar Efficiency Record

Researchers at the University of Arkansas have succeeded in achieving the highest efficiency ever in a 9 millimetre-squared solar cell made of gallium arsenide. A conversion efficiency of 14 percent was achieved after coating the tiny cells with a thin layer of zinc oxide.

A small array of these cells can generate sufficient energy for small light-emitting diodes and other devices. The cells can also be easily be arranged in large arrays of panels in order to harness power for large scale applications such as a solar rooftop.

The research team was led by Omar Manasreh, professor of electrical engineering. The study has been published in Applied Physics Letters and the April 2014 issue of Solar Energy Materials and Solar Cells.

Gallium arsenide is not as popular as silicon in making solar cells but is widely used as a semiconductor for manufacturing integrated circuits, light-emitting diodes and solar cells. The surface modification, achieved through a chemical synthesis of thin films, nanostructures and nanoparticles, suppressed the sun’s reflection so the cell could absorb more light. But even without the surface coating, the researchers were able to achieve 9-percent efficiency by manipulating the host material.

“We want to increase the efficiency of small cells,” said Yahia Makableh, doctoral student in electrical engineering. “With this specific material, the theoretical maximum is 33 percent efficiency, so we have some work to do. But we’re making progress. The beauty of zinc oxide is that it’s cheap, non-toxic and easy to synthesize.”

Makableh said the surface modification could also be applied to other solar cells, including those made of indium-arsenide and gallium-arsenide quantum dots. Solar cells made of these materials may be able to achieve 63-percent conversion efficiency, which would make them ideal for future development of solar cells.

Puskar Pande

Editor in chief @GreenCleanGuide.com

Published by

Recent Posts

Green Thumb, Marathi Style: Your Mobile’s Eco-Adventure Awaits!

Ever wished your mobile phone could do more than just send memes and crush candies? Well, buckle up, because we're about to take your mobile…

9 months ago

Environmental Impacts of Bitcoin and other Proof of Work (PoW) Mining Activities

As of 2023, 106 million people worldwide had bitcoins but the currency's influence on the environment is disproportionate. The primary method of cryptomining, known as…

10 months ago

Cultivating a Sustainable Future: Top Ten Green and Clean Habits to Teach Children

In today’s modern world, where environmental issues are becoming more and more important, teaching kids to be environmentally conscious and eco-friendly is crucial to building…

11 months ago

Top 10 House Plants for Clean Air

Our houses offer a safe haven from the outside world amid the chaos of modern life. However, common contaminants emitted by furniture, cleaning supplies, and…

11 months ago

The Environmental Impact of Scrap Metal Recycling

Scrap metal recycling stands as a cornerstone of sustainable waste management, playing a pivotal role in mitigating the environmental impact of metal production and waste…

12 months ago

Say Goodbye to Fuel Poverty by Applying For Free Energy Upgrades

If the worry of affording your next energy bill is giving you sleepless nights, you’re not alone. Millions of people in the UK have this…

12 months ago