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The research team led by Ted Sargent, a professor of electrical and computer engineering at the University of Toronto, Canada, has for the first time developed a colloidal quantum dots (CQD) double-layer solar cell that can significantly increase conversion efficiency. Colloidal quantum dots are semiconductor particles that can both absorb visible light and absorb invisible light. Theoretical conversion efficiency can reach 42%. The research results were published in the latest edition of Nature Materials magazine.
Scientific research proves that quantum dots are a very promising method that can be sprayed onto various surfaces including plastics, effectively reducing solar cell production costs.
One of the biggest challenges in this area is how to achieve the best combination of convenience and performance. The ideal design is to connect the quantum dots closely. Because of the larger spatial distance of the quantum dots, the photoelectric conversion efficiency is lower.
So far, all quantum dots are blocked in organic molecules. In order to solve the long-range movement of electrons, scientists used inorganic ligands and atoms smaller than nanometers to combine quantum dots. The close-packed arrangement and removal of the negative charge trap ensures that the electrons can move quickly and smoothly in the solar cell, providing conversion efficiency.
In this double-layer solar cell developed by the researchers, one layer of quantum dots is modulated to capture visible light while the other layer is capable of capturing infrared light. In addition, they also introduced a transition layer consisting of four different film-like metal oxides. This method can reduce the interlayer resistance. They choose transparent oxides for this layer so that light can pass through them to the underlying battery.
At present, the conversion efficiency of this double-layer solar cell is 4.2%. The team’s goal is to increase conversion efficiency to 10% over the next five years.
This double-layer battery has the maximum current and the highest conversion efficiency of colloidal quantum dot solar cells. The experimental results have been recognized by Newport, which is certified by the National Renewable Energy Laboratory.
John Asbury, a professor of chemistry at Pennsylvania State University, points out that the team at the University of Toronto has increased the theoretical efficiency from 30% to more than 40% because of the ability to make multi-layer quantum dot solar cells.
Sargent said: "The world and the market need innovation to break the existing performance and cost balance. Through the contract with the University of Toronto and the King Abdullah University of Technology, we can turn existing research into real innovation and achieve business. Application." (Translation: Owen)
Phlizon`s COB series Grow Light emits all the wavelengths of light which can be fully absorbed by the plants to create.
Best full Specturm designed to perfectly match large areas of indooor plants, especially for Medical Plant.
COB + Dual-chip,most efficient spectrum,high PPFD.Two cooling fans with double ball(import from Japan) and big aluminum heat sink to protect the grow lights from high temperature,good cooling,long lifespan.Photosynthesis and promote healthy growth budding and flowering.
1000w/2000w /3000w COB LED Grow Light, it will give you more options when your plants need different strength of illumination.
Grow Lights are a great choice for growers who are dealing with hot HPS lights and want to change to something that's going to run cooler. Although LED Grow Lights do produce heat,the smaller models might not bring up the temperature of your grow space.Even the more powerful models of LED grow lights that produce a lot of heat still have built-in cooling systems to help prevent the heat from beaming directly down onto your plants.
2000w cob led grow light Features
Indoor grow light
COB series, high power branded CREE COB with high Par value and deeper penetration
VEG/BLOOM and STRONGER switches for each grow stage.
Special spectrum for plant growing to increase the yield.
Building to Harvest: Beneficial for seeding to fruiting stage.
Good quality fans with low noise.
Easy to install by minute
Energy Saving, environmental friendly
3 Years Warranty
Compare led grow light to traditional HPS/MH grow light
WHAT MAKE UP AN EXCELLENT LED GROW LIGHT ?
1.PPFD Value : PPFD is Photosynthetic Photon Flux Density. When you choose a plant light, you should compare the PPFD values of different plant lights. The larger the value, the better the growth of the plant.
2.Actual Power: Because the actual power of the plant light always varies with different conditions, all Amazon sellers use the rated power to describe the power of the product because the rated power is constant. When you pick a LED grow light, the rated power of the plant light is a reference, and more importantly is the actual power.
3.Core Coverage: In addition to the above two, when you choose a plant light, you also need to compare the cover area of different plant lights, of course, the size of the core coverage area. In general, in germination stage, you can hang the plant light higher and the cover area is larger. In flowering stage you can hang the plant light lower and the cover area is smaller because the plant needs more light at this stage. You have to compare different coverage areas to choose the plant light that suits you.
Detailed images of 2000w cob led grow light
Applications
Hydroponics, Horticulture, Agriculture and Greenhouse
Locations: Farm, Exhibition, Garden, Home, Urban, Bonsai, and University Lab
Growth of Fruits, Vegetables, Flowers and so on
Seeding, Rooting, Breeding, Flowering and Fruiting period
Packaging and Shipping
2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time: stock avaiable sample will be delivered immediately ; 3-7 days for trial order; 7- 25 days for batch goods
Suggestions:
1.Clean the dust inside every 6 months to ensure the good heat dissipation and long life time.
2.Don`t keep too short distance to the plant canopy to avert leaves bleaching.
3. Highly hang the lamp will weaken the energy and affect the growth cycle of the plants, so the lamp should not be hang too high.
4. While taking care of the plants, please spray the leaves and branches 2-3 times everyday, to ensure the plants do not wrinkle a wither, and have no phenomenon of few fruit, and hard pericarp
Trade Terms
Payment: T/T, L/C, Paypal, 30% deposits before production, 70% balance to be paid before deliverying(Western Union are welcome)
Sample will be delivered within 7 working days.
Discounts are offered based on order quanlityes.
MOQ:sample order are acceptable
Delivery ways:DHL,UPS,FedEx,TNT, door to door,by sea,by air,etc.
If you are interested in, and
1.own several store for agriculture in your local market
2.or in the business of grow light equipment
3.or good relationship with grower or greenhouse owner
To be a distributor, max support will be offered:
1.price support
2.technical support
3.new product support
4.24 hours after-sales service online
PH-B-L4,2000W Led Grow Light,Optic Cob Led Grow Lights,450W Cree Cob Grow Light,2000W Cob Led Lights
Shenzhen Phlizon Technology Co.,Ltd. , https://www.szledaquariumgrowlight.com