Dr. Hae Jung Son’s team at KIST implemented high-efficiency solar cell technology on a large area through solution process method that utilizes spin coating.
CREDIT: Korea Institute of Science and Technology (KIST)
Researchers identify the principles necessary for designing the core material of large-area solution processable solar cells. Future application as plastic-based photovoltaic paint technology.
Researchers in Korea have successfully developed a high-efficiency large-area organic solution processable solar cell by controlling the speed at which the solution of raw materials for solar cells became solidified after being coated. The team led by Dr. Hae Jung Son from the Photo-electronic Hybrids Research Center of the Korea Institute of Science and Technology (KIST) announced that they have identified the difference in the mechanism of film formation between a small area and a large area of organic solar cells in a solution process and, by resolving the issue concerning the related process technology, developed a high-efficiency large-area organic photovoltaics.
If a photovoltaic material is made in the form of paint that can be applied to any surface, such as the exterior of a building or a car, it will be possible to achieve energy self-sufficiency and provide low-cost eco-friendly energy to those suffering from energy poverty. Not only that, it will be easy to utilize space for installation of photovoltaics even on urban buildings, and ideally, the photovoltaic panels will be maintained by re-applying the “paint.”
When it comes to solution processable solar cells, which work by coating the surface with the solar cell solution, the photoactive area that generates electricity still remain on a laboratory scale (less than 0.1?). When applied to a large area to produce sufficient electric power for it to be practical, there are issues related reduced performance and reproducibility due to material- and process-related limitations, and this has been an obstacle to commercialization.
Dr. Son’s team at KIST revealed that commercially available organic materials become easily crystallized, which makes them unsuitable for large-area solution processes. In the case of the large-area solution process for industrial uses, the process through which the solvent in which the solar cell material is dissolved evaporates to form a film occurs slowly, thereby resulting in agglomeration and other phenomena, and this in turn lowers the efficiency of the solar cell. As for the spin coating method, which is a small-area process employed in laboratory research, the substrated is rapidly rotated during the film formation process in order to speed up the solvent evaporation, and this makes it possible to form a film without the aforementioned problem concerning reduced efficiency.
Based on this information, KIST researchers developed high-performance large-area organic photovoltaics by controlling the solvent evaporation rate following the coating step in a large-area solution process as a way to form a film optimized for solar cell performance. As a result, high-efficiency large-area organic photovoltaics with 30% higher power conversion efficiency than existing photovoltaics were attained.
Dr. Son said, “The core design principles of solar cell materials capable of high-quality large-area using the solution will accelerate the development of solution processable solar cells in the future. [This study] has contributed to not only raising the efficiency of next-generation solution processable solar cells but also the development of core technology for manufacturing large-area solar cell materials required for commercialization.”
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- ABB Sets New Benchmark for Automating Cleanroom Applicationson September 30, 2020 at 2:52 pm
Certified to ISO 14644-1, the new cleanroom IRB 1100 combines fast performance in a compact design for industries including healthcare, pharmaceuticals, electronics, semiconductors and solar panel ...
- 2020 Hyundai Sonata Hybrid Limited deliverson September 18, 2020 at 1:12 am
The solar panel roof prevents the 12-volt battery from ... The glistening black solar panels on the roof contrasting with the dazzling silver paint job, giving it a wider and lower look that ...
- PV paint, fungus leather, air pollution and more: best of the week’s news from E&Ton September 11, 2020 at 4:32 am
However, I’ve chosen research work in Korea to develop new photovoltaic technology ... although I can’t see it getting to the point when we simply paint a PV surface onto the shed roof. Surface ...
- Photovoltaic paint has endless potentialon September 9, 2020 at 10:06 am
A team from the Photo-electronic Hybrids Research Center of the Korea Institute of Science and Technology (KIST) has developed a high-efficiency large-area organic photovoltaics that can be applied as ...
- Photovoltaic ‘paint’ could be applied to cars and homeson September 9, 2020 at 5:33 am
opening the door to applications such as plastic-based photovoltaic paint. The team from the Korea Institute of Science and Technology (KIST) has developed a high-efficiency, large-area organic ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
High-performance large-area organic photovoltaics
- Fraunhofer ISE group hits 14.9% organic solar cell conversionon September 28, 2020 at 8:08 am
ways must now be found to upscale this potential to large-area, high-performance modules. "Together with industrial partners, we will continue to bring organic photovoltaics to market maturity", said ...
- Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage losson September 25, 2020 at 9:54 am
We also achieve an efficiency of 22.31% in the large-area cell ... Most high-performance PSCs have a sandwich structure composed of a perovskite absorber between a metal oxide–based ...
- Higher Efficiencies in Organic Photovoltaics – New Record for 1 cm² Solar Cellon September 25, 2020 at 8:13 am
ways must now be found to upscale this potential to large-area, high-performance modules. "Together with industrial partners, we will continue to bring organic photovoltaics to market maturity ...
- Organic Electronics in EVon September 17, 2020 at 1:10 am
The materials used and processes employed for manufacturing Organic and Flexible Electronics differ based on usage. For manufacturing over the small and large area substrate, roll to roll ...
- More efficient large-area organic solar cells with spin coatingon September 11, 2020 at 2:31 am
The cell is described in the paper Developement [sic] of highly efficient large area organic photovoltaic module: Effects of nonfullerene acceptor, published in Nano Energy and on the ...