A perovskite solar module the size of an A4 sheet of paper, which is nearly six times bigger than 10×10 cm2 modules of that type reported before, has been developed by Swansea University researchers, by using simple and low-cost printing techniques.
The breakthrough shows that the technology works at a larger scale, not just in the lab, which is crucial for encouraging industry to take it up.
Each of the many individual cells forming the module is made of perovskite, a material of increasing interest to solar researchers as it can be made more easily and cheaply than silicon, the most commonly-used material for solar cells.
Perovskite solar cells have also proved to be highly efficient, with scores for power conversion efficiency (PCE) – the amount of light striking a cell that it converts into electricity – as high as 22% on small lab samples.
The team work for the SPECIFIC Innovation and Knowledge Centre led by Swansea University. They used an existing type of cell, a Carbon Perovskite Solar Cell (C-PSC), made of different layers – titania, zirconia and carbon on top – which are all printable.
Though their efficiency is lower than other perovskite cell types, C-PSCs do not degrade as quickly, having already proved over 1 year’s stable operation under illumination.
The Swansea team’s breakthrough comes from the optimisation of the printing process on glass substrates as large as an A4 sheet of paper. They ensured the patterned layers were perfectly aligned through a method called registration, well-known in the printing industry.
The entire fabrication process was carried out in air, at ambient conditions, without requiring the costly high-vacuum processes which are needed for silicon manufacture.
The Swansea team achieved good performance for their modules:
– up to 6.3% power conversion efficiency (PCE) when assessed against the “1 sun” standard, i.e. full simulated sunlight. This is world-leading for a C-PSC device of this size.
– 11% PCE at 200 lux, roughly equivalent to light levels in an average living room
– 18% PCE at 1000 lux, equating to light levels in an average supermarket.
The high efficiency ratings under indoor lighting conditions demonstrate that this technology has potential not only for energy generation outdoors but also for powering small electronic devices – such as smartphones and sensors – indoors.
Dr Francesca De Rossi, technology transfer fellow at Swansea University’s SPECIFIC Innovation and Knowledge Centre, said:
“Our work shows that perovskite solar cells can deliver good performance even when produced on a larger scale than reported so far within the scientific community. This is vital in making it economical and appealing for industry to manufacture them.
The key to our success was the screen printing process. We optimised this to avoid defects caused by printing such large areas. Accurate registration of layers and patterning the blocking layer helped improve connections between cells, boosting overall performance.
There is more work still to do, for example on increasing the active area – the percentage of the substrate surface that is actually used for producing power. We are already working on it.
But this is an important breakthrough by our team, which can help pave the way for the next generation of solar cells”
The Latest on: Perovskite solar cell
via Google News
The Latest on: Perovskite solar cell
- Unleashing perovskites' potential for solar cells on February 7, 2019 at 1:22 pm
Solar cells made of perovskite have great promise, in part because they can easily be made on flexible substrates, like this experimental cell. Credit: Ken Richardson Perovskites—a broad ... […]
- Charting a path to cheaper flexible solar cells on February 7, 2019 at 11:50 am
Researchers have reported new findings about perovskite solar cells that could lead the way to devices that perform better. There's a lot to like about perovskite-based solar cells. They are simple an... […]
- X-rays Reveal Why Adding a Bit of Salt Improves Perovskite Solar Cells on February 7, 2019 at 11:30 am
A team of researchers has reported new findings about perovskites that could pave the way to developing low-cost, high-efficiency solar cells. Using high-intensity X-ray mapping, they explain why addi... […]
- Researchers chart path to cheaper flexible solar cells on February 7, 2019 at 11:24 am
There's a lot to like about perovskite-based solar cells. They are simple and cheap to produce, offer flexibility that could unlock a wide new range of installation methods and places, and in recent y... […]
- University of Manchester academic a step closer to cutting the costs of next-generation solar cell technology on February 6, 2019 at 11:00 am
Professor Brian Saunders’ Perovskite Solar Cells (PSCs) technology holds the potential for the design of new solar cells at a significantly lower cost. Solar panels are frequently seen on houses and b... […]
- Global Perovskite Solar Cell Module Market to 2025: Key Players Analysis and Market Outlook on February 5, 2019 at 8:51 pm
Albany, NY -- (SBWIRE) -- 02/05/2019 -- This report presents the worldwide Perovskite Solar Cell Module market size (value, production and consumption), splits the breakdown (data status 2013-2018 and ... […]
- Recent research: Global Perovskite Solar Cells Module industry market analysis & forecast 2018-2023 on February 4, 2019 at 1:53 pm
3.1 Global Perovskite Solar Cells Module Production and Share by Manufacturers Global 3.2 Global Perovskite Solar Cells Module Revenue and Share by Manufacturers Global 3.3 Global Perovskite Solar Cel... […]
- Helmholtz Center achieves 21.6% for perovskite CIGS tandem solar cell on February 4, 2019 at 8:06 am
Scientists at the Helmholtz Center Berlin (HZB) claim to have produced a thin-film solar cell made of perovskite and copper-indium-gallium-selenide (CIGS) with an efficiency of 21.6%. The achievement ... […]
- 'Inkjet' solar panels poised to revolutionise green energy on February 2, 2019 at 8:35 pm
... method for perovskites -- a new generation of cheaper solar cells -- that makes it possible to produce solar panels under lower temperatures, thus sharply reducing costs. Indeed, perovskite techno... […]
via Bing News