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science: u of t. making cheaper, tougher solar electricity cells

by:Dolight LED Panel     2019-09-06
Researchers have made significant progress in developing solar photovoltaic cells that are cheaper and more durable than traditional solar power generation technologies.
It\'s based on CQD or collodial-quantum-
It\'s Nano.
Zoom the semiconductor that captures the light and converts it to energy.
University of Toronto researcher, King Abdullah
Science and Technology, the report of Penn State University found in the latest issue of \"natural materials\" entitled \"Collodial-quantum-
Point photovoltaic using atoms
The ligand is passive, \"he said ,\".
\"Because of their small size, these points can be sprayed on flexible surfaces, including plastic.
This makes production cheaper and more durable than a wider range of solar cellsknown silicon-
According to a copy of T. U. news release.
In this paper, the researchers demonstrated how to reduce the packaging of encapsulated quantum dots to just one layer of atoms.
Professor Ted Sargent said: \"We have come up with how to reduce the passive material to the smallest size that can be imagined . \" Counterpart author of the work and holder of the Canadian Research Chair of nanotechnology
At the press conference.
One of the biggest obstacles to widespread adoption of solar energy as a green technology is the cost of producing solar energy-the price of crystalline silicone panels is about four times that of wind or hydro, according to some estimates, the greenhouse gas generated in the process of manufacturing traditional solar cells is larger than the amount of gas offset in the battery life.
CQD technology can change this.
The cell efficiency produced by the researchers is 6%, while the traditional silicon-
The base version is about 29%.
That means you get four times the energy from one person.
For example, using traditional solar technology, the square meter panel on the roof of your house.
But there are many reasons for the CQD News.
For example, it is cheaper to produce CQD.
Compared to the temperature from 2000 to 350 degrees Celsius, you can do this at room temperature so that you consume less energy in manufacturing.
They are also less fragile-Ontario\'s severe winter threat to the CQD panel is much smaller than the crystalline silicone panel.
If they can continue to improve the manufacturing process, it may be possible to increase the amount of electricity that CQD panels can produce, which may lead to a wider application of solar power generation.
Here is the rest of the news release.
[Key Challenges]CQD]
Field balanced between convenience and performance.
The ideal design is to tightly package quantum dots together.
The greater the distance between quantum dots, the lower the efficiency.
However, quantum dots are usually covered by organic molecules with one or two nanometers added.
When working on a nano scale, the volume is large.
Organic molecules, however, are an important ingredient in the production of colloidal, which is a substance dispersed in another substance.
This makes it possible to plot quantum dots on other surfaces.
To solve this problem, the researchers turned to inorganic ligand, which combines quantum dots together while using less space.
The result is the same colloidal properties, but there are no large organic molecules.
\"We wrap a layer of atoms around each particle.
So they fill quantum dots into very tight solids . \"
Jiang Tang is the first author of the paper, he conducted a study after publishing the paper
Dr. researcher in Edward\'s age
Department of Electrical and Computer Engineering, Rogers University
The team demonstrated the highest current ever and the highest overall power conversion efficiency for CQD solar cells.
Performance results are certified by Newport, an external laboratory certified by the United StatesS.
National Laboratory of renewable energy
Professor John Asbury of Penn State University said: \"The research team has shown that we are able to remove the charge trap-where the electrons are stuck-while still packing the quantum dots tightly together . \"
Author of the work.
\"The combination of tight packaging and charge trap elimination enables electrons to pass through solar cells quickly and smoothly, providing record efficiency.
Professor Dmitri Talapin of the University of Chicago said: \"This discovery proves the ability of inorganic ligand in building practical devices . \" He is a research leader in the field.
\"This new surface chemistry provides the way for efficient and stable quantum dot solar cells.
It should also affect other electronic and optoelectronic devices that utilize colloidal nanoparticles.
All the advantages-
Inorganic methods include greatly improving electronic transport and routingterm stability.
\"At KAUST, we were able to imagine the submarine at an incredible resolution
Professor Aram Amassian of KAUST said: \"nano longitudinal scale, the structure and composition of this striking new material
Author of the work.
\"We demonstrate that the inorganic passiv agent is closely related to the location of quantum dots;
It is this new method of chemical passivation, not the order of the nano-crystals, that has led to this record --
\"Breaking the performance of the colloidal quantum dot solar cell,\" he added . \".
Due to the potential found in this study, U and KAUST of T signed a technical licensing agreement by MaRS Innovations (MI)
This will commercialize the new technology globally.
\"The world and the market need solar innovation to break the compromise between existing performance and cost.
With the cooperation of T, MI and KAUST, we are ready to translate exciting research into tangible innovations that can be commercialized, \"said sakint.
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