Doping Solar Cells | Perovskite Tech Upgrade!

Doping solar cells – Swinburne University have been making big improvements on their research in upgrading efficiency of perovskite solar cells. Let’s read more.

Doping Solar Cells | Perovskite Tech Upgrade!

Swinburne University have been working in conjunction with Wuhan University of Technology in China, the University of Melbourne, and the University of Adelaide. Their research is to do with ‘doping solar cells’ – using sunlight as a ‘healing process’ to improve cell efficiency and stability. ‘Doping’ perovskite solar cells with potassium is having a big effect on increasing stability and efficiency of the solar cells. 

We’ve written extensively about the potential that perovskite solar cells could have – potentially overcoming Shockley–Queisser limit (33.7% at 1.34 eV) means that the theoretical conversion limit silicon based solar cells has could be improved upon.

As per Wikipedia, Perovskite tech has been moving along in leaps and bounds over the past 5 years:

Solar cell efficiencies of devices using these materials have increased from 3.8% in 2009[3] to 24.2% in 2019 in single-junction architectures,[4] and, in silicon-based tandem cells, to 28.0%,[4] exceeding the maximum efficiency achieved in single-junction silicon solar cells.

With the potassium ‘doping’, the sunlight starts to repair ‘interface traps’:

“Sunlight becomes a trigger for the positive formation of potassium bromide-like compounds, eliminating the interface traps and stabilising the mobile ions, thus resulting in improved power conversion efficiency,” Dr Weijian Chen, an early career researcher at Swinburne, noted in comments on the Swinburne website.

“This research contributes to the rationalisation of the improved performance and guides future design protocol of better solar cells.” Dr Xiaoming Wen, senior research fellow at Swinburne continued.

“The demonstrated solar cell characterisation methods are at the cutting edge, and will help our industry partners develop a new protocol for commercial perovskite solar cells.” Director of Swinburne’s newly founded Centre of Translational Atomaterials (CTAM), Professor Baohua Jia said about the technology.

If you’d like to read more, the research, funded by the Australian Research Council under the Discovery Project program, has been published in Advanced Energy Materials.

 

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Redeployable solar trial at shopping centres

Redeployable solar is a very interesting topic as the issue of solar panel recycling comes to the fore. This week ARENA have announced funding for redeployable commercial solar via Australian startup Solpod. 

Redeployable solar

Redeployable solar – on Friday the Australian Renewable Energy Agency (ARENA) announced funding for an Australian start up (Solpod Pty Ltd (Solpod)) to trial the installation of movable solar panels on commercial and government building rooftops. 

According to a post on the ARENA website, the startup has undertaken trials with ARENA, ERM Power, GPT and Property NSW.

Redeployable Solar Solpod
Redeployable Solar Solpod (source: solpod.com

Arena CEO Darren Miller, who took over from previous head Ivor Frischknecht last year, was quoted discussing the redeployable solar and their partnership with Solpod:

“Solpod’s new way of installing solar will pave the way for businesses who were previously locked out of rooftop solar to take up renewable energy solutions and options under shorter term power purchase agreements.

“This Australian start up will help to accelerate solar PV innovation and allows for renewable energy alternatives in niche markets, providing a cost-competitive alternative to standard methods of fixed mounting for delivering rooftop grid connected solar PV,” Mr Miller said.

There were also some comments from founder and CEO of Solpod James Larratt, who discussed the new ‘game-changing’ tech:

“Despite rooftop solar being cheaper and more sustainable than the grid, many businesses have made the rational decision to not adopt solar because of other factors such as length of commitment, disruption on site and damage to buildings. Solpod is the game-changer that removes these barriers and enables businesses to capture the savings in energy costs.”

“Solpod’s solution can adapt to meet individual business needs. For businesses that rent their premises, Solpod can offer short-term contracts to match lease terms. For landlords, Solpod allows flexibility for changing site use and will not damage the roof,” he said.

You can learn more about Solpod’s relocatable commercial solar via their website.

 

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Solar glass shopping centre – Vicinity Centres/ClearVue.

Australia’s largest retail landlord, Vicinity Centres, has partnered with innovative solar glass company ClearVue Technology to install transparent solar panels (solar glass) to help their shopping centre’s environmental footprint and potentially save money on energy.

Solar Glass – Vicinity Centres partner with ClearVue 

We’ve written about ClearVue Technology quite a few times on this website, from their solar bus shelters to commercial solar windows, the company have been working hard bringing their integrated clear glass solar panel to market in Australia and overseas.

The company have now partnered with Vicinity Centres to install solar glass in its Warwick Grove shopping centre atrium entry. The solar glass atrium has 26 solar cells inbuilt, which generate up to 1MW. It also works as insulation – with materials inside the window deflecting energy to small PV cells at the edge of the screen. This solar window tech is something we’ve been very excited about for a long time so it it’s amazing to watch it enjoying some real world application! 

According to ClearVue, this is the first commercial installation of fully transparent solar cell glass in the entire world. The solar atrium will power lighting, outside signage, a digital display screen within the centre, and it’ll send any excess energy to battery storage at night. So it’s a pretty far cry from actually powering the shopping centre, but that’s not really the point right now. 

“While other products exist, these are typically optically distorted or coloured, or they are not yet commercially available and are still in the research and pre-commercialisation stages,” a ClearVue spokesman said in quotes to the Sydney Morning Herald.

Solar Glass - Vicinity and ClearVue Technologies (source: clearvuepv.com)
Solar Glass – Vicinity and ClearVue Technologies (source: clearvuepv.com)

The Vicinity Centres general manager for shopping centre management, Justin Mills, was also very excited about the new installation:

“(the solar atrium) reinvents the way we harvest renewable energy, reduces our exposure to the volatile energy market and our carbon footprint – a key focus for Vicinity.

“We’re excited to be trialling such innovative, leading-edge technology and embarking on a global-first in solar energy application.” he continued.

If you’d like to read more about solar power installed at shopping centres, take a look at the Stockland Solar Power Rollout – which will see 12.3MW installed across 10 shopping centres in Australia.

You can also read about Vicinity Centres’ solar project – which is the investment of $28m to install 11.2MW of solar power in five shopping centres.

According to Smallcaps, ClearVue Technologies have also signed a a memorandum of understanding (MoU) with Grafsol General Trading for exclusive distribution rights in the United Arab Emirates (UAE), Kuwait, Bahrain and Qatar. 

“This MoU represents a great opportunity for ClearVue to break into the Middle Eastern region,” said Victor Rosenberg, executive chairman of ClearVue Technologies.

We’ll report more about ClearVue in the middle east next week! 

Have a great weekend.

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GAF Energy to sell residential solar.

Standard Industries has announced it will launch a rooftop solar company named GAF Energy in the US – they are already the world’s largest roofing and waterproofing manufacturer.

GAF Energy Rooftop Solar

GAF Energy Decotech Rooftop Solar
GAF Energy Decotech Rooftop Solar (source: standardindustries.com/solar)

As per a post on the Standard Industries website, the new company, GAF Energy, will work together with GAF to offer their DecoTech® solar roofing solution to “everyday consumers”

It’s an interesting niche to walk into – GAF’s new product offering has some competitors in the PV integrated roof tiling space, such as the Tesla Solar Roof, Tractile Solar Roof Tiles, Monier Solartileor Sonnen/Bristile’s Solartile  These are all fantastic products but fairly expensive at this point in time – hopefully having more competition in the market leads to more competitive prices and more powerful roofs.

“GAF Energy capitalizes on the historic challenges facing the rooftop solar industry – acquisition and installation costs – and turns them into demonstrable strengths – making it easy for customers to say ‘yes’ to solar rooftops,” said Martin DeBono, President of GAF Energy. “Our product is smart, integrated and economical, and we hope it will mark a fundamental shift in rooftop solar adoption around the world.”

Rooftop solar in America is a lot less developed than in Australia – according to Renew Economy, only 3% of USA homes had solar panels installed in 2017 – in stark comparison to Australia’s 30%. As such there’s plenty of opportunity if the product and price is right, and the governments get on board to help. Will integrated solar roof tiles be the way forwards in the future for domestic solar? We’ll soon find out. In any case, it’s exciting to see 

For more information about GAF, visit www.gaf.energy. If you’d like to read the press release about launch of the company and new DecoTech solar roof, please click here

It shouldn’t be long before we have some more information about how these solar roofs are performing, and as the results trickle in we will be creating a solar roof tile comparison document for anyone interested in integrating solar panels into their roof. Please watch this space! Exciting days ahead for rooftop solar.

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REC Group Announce Upgraded Solar Panel Warranty

The European based REC Group have announced that they have upgraded their product warranty from 10 to 20 years – and they’ve also reduced the power degradation of the REC TwinPeak and REC N-Peak high performance panels.

REC Group Announce Upgraded Solar Panel Warranty

The REC Group was founded in Norway in 1996 – their panels are made in Singapore and the Group is owned by a Chinese corporation, so it truly is a global company.

“REC’s new warranty, which now ranks as one of the best in the industry, is a testament to our consistent excellent product and performance quality,” says Cemil Seber, Vice President Global Marketing & Product Management at REC Group. “The extended warranty terms for REC Solar Professionals further demonstrate our strong commitment to building and maintaining long-term alliances with our partners who install and maintain installations with our panels around the world.”

According to the news release about the new warranty, REC Group has by far the lowest claims rate in the industry, with “well below 100ppm”. 

In addition to these new terms, the company are also offering an extra 5 year product warranty for installations done by REC-certified ‘Solar Professionals’ – which results in an industry-leading 25 year warranty. REC Solar Professionals are trained by the company to “ensure best practice”. 

If this interests you and you want to find an REC certified Solar Professional in Australia please click here to use REC’s ‘find installer’ tool. 

REC Group Announce Upgraded Solar Panel Warranty
REC Group Announce Upgraded Solar Panel Warranty (source: recgroup.com)

REC Group employ 2,000 people across the globe and are able to produce 1.5GW of solar panels every year – so it’s great to see such a massive company take ownership of their solar panel technology and products and stand by them! 

For further information please contact:
Agnieszka Schulze
Head of Global PR, REC
Tel.: +49 89 54 04 67 225
E-mail: [email protected]

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