SunDrive Achieves 26.41% Efficiency Using Copper Solar Cell Technology - International PV Journal

SunDrive Achieves 26.41% Efficiency Using Copper Solar Cell Technology – International PV Journal

SunDrive, an Australian solar technology company, achieved an efficiency of 26.41% using a full-size silicon cell using heterogeneous technology.

From PV Australia

SunDrive achieved an efficiency result of 26.41% on a full-size heterogeneous silicon (HJT) solar cell featuring its copper-based technology. It has used large-scale production processes provided by China-based equipment manufacturer Maxwell Technologies.

Sydney-based SunDrive said results that have improved on 26.07% efficiency mark Earlier this year, the company announced that it has been officially certified by the Solar Research Institute Hameln (ISFH) in Germany. The company said the optimization of the HJT cell, with a total surface area of ​​274.3 square centimeters (M6 size), was noted in all three key performance parameters, including open circuit voltage (Voc), short circuit current (Isc) and winding. factor (FF). She attributed the improvements to “several equipment and handling upgrades.”

SunDrive said Maxwell’s latest generation chemical vapor deposition (CVD) equipment incorporates microcrystalline silicon layer deposition, further improving backside passivation and contact resistance. In addition, more transparent conductive oxide layers were applied using the latest Maxwell Physical Vapor Deposition (PVD) coating equipment.

SunDrive said it manufactures solar cell electrodes using the company copper plating technology Instead of traditional silver screen printing, it also played a major role in improving efficiency. SunDrive, which replaces the silver used in conventional solar cells with cheaper and more abundant copper, said it has refined copper plating chemistry and processing sequences, achieving feature sizes of less than 10 micrometers with an aspect ratio close to one.

“What we’ve shown is that copper can effectively take the place of silver in next-generation solar cell structures, but more importantly, the efficiency can be increased far beyond levels that can be achieved with silver,” the company said.

With a solar pv array to play a A key role in the world’s transition to a clean energy futureCopper is key to opening the gates to more efficient solar cell structures, and using it instead of silver could allow solar technology to reach its full potential, SunDrive co-founder Vince Allen said.

“The solar cells that will provide the majority of the world’s future energy needs will be vastly different from the solar cells we have today,” Allen said. Efficiency, cost, and scalability of materials are fundamental to the continued growth of solar adoption. Copper is about 100 times cheaper per kilogram and about 1,000 times more abundant than silver. Aside from copper’s abundance and cost benefits, we’ve found that we can improve efficiency beyond what can be achieved with silver.”

SunDrive will now move forward with its plans to establish a beta program production line by mid-2023, with expanded market entry later in the year. While a location for the planned production facility has not been determined, Allen said Australia has many of the components required to host the solar industry.

“We recognize that countries are increasingly competing in this area, but with the right policies in place, Australia has the potential to be a global powerhouse in the solar industry,” he said. “We have a need – we have the fastest growing rooftop solar market in the world, and Australia is also likely to be home to the five largest solar farms in the next decade. We have the people – many of the world’s top solar CEOs, scientists and engineers have been trained in universities Australian and we have the capacity, today’s commercial solar cells were invented here in Australia and Australia has held the world record for efficiency in 30 of the last 40 years.”

Allen said the nation is also blessed with resources that are critical to the clean energy transition.

“Australia is in the top three in terms of global reserves of every major mineral required to make a solar panel that no other country can claim,” he said. “Australia also probably has the greatest opportunity of any country to not only get to net zero but to help other countries get to net zero – it is the world’s brightest and windiest continent with a very large land mass and very low population density.”

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