Advances at Oregon State University in manufacturing technology for “quantum dots” may soon lead to a new generation of LED lighting that produces a more user-friendly white light, while using less toxic materials and low-cost manufacturing processes that take advantage of simple microwave heating.
The cost, environmental, and performance improvements could finally produce solid state lighting systems that consumers really like and help the nation cut its lighting bill almost in half, researchers say, compared to the cost of incandescent and fluorescent lighting.
The same technology may also be widely incorporated into improved lighting displays, computer screens, smart phones, televisions and other systems.
A key to the advances, which have been published in the Journal of Nanoparticle Research, is use of both a “continuous flow” chemical reactor, and microwave heating technology that’s conceptually similar to the ovens that are part of almost every modern kitchen.
The continuous flow system is fast, cheap, energy efficient and will cut manufacturing costs. And the microwave heating technology will address a problem that so far has held back wider use of these systems, which is precise control of heat needed during the process. The microwave approach will translate into development of nanoparticles that are exactly the right size, shape and composition.
“There are a variety of products and technologies that quantum dots can be applied to, but for mass consumer use, possibly the most important is improved LED lighting,” said Greg Herman, an associate professor and chemical engineer in the OSU College of Engineering.
“We may finally be able to produce low cost, energy efficient LED lighting with the soft quality of white light that people really want,” Herman said. “At the same time, this technology will use nontoxic materials and dramatically reduce the waste of the materials that are used, which translates to lower cost and environmental protection.”
Some of the best existing LED lighting now being produced at industrial levels, Herman said, uses cadmium, which is highly toxic. The system currently being tested and developed at OSU is based on copper indium diselenide, a much more benign material with high energy conversion efficiency.
Quantum dots are nanoparticles that can be used to emit light, and by precisely controlling the size of the particle, the color of the light can be controlled. They’ve been used for some time but can be expensive and lack optimal color control. The manufacturing techniques being developed at OSU, which should be able to scale up to large volumes for low-cost commercial applications, will provide new ways to offer the precision needed for better color control.
By comparison, some past systems to create these nanoparticles for uses in optics, electronics or even biomedicine have been slow, expensive, sometimes toxic and often wasteful.
Oher applications of these systems are also possible. Cell phones and portable electronic devices might use less power and last much longer on a charge. “Taggants,” or compounds with specific infrared or visible light emissions, could be used for precise and instant identification, including control of counterfeit bills or products.
The Latest on: Quantum dot LEDs
via Google News
The Latest on: Quantum dot LEDs
- Every new Android TV announced at CES 2020on January 9, 2020 at 12:16 pm
The Q7 Series is arguably the company's flagship, sporting a QLED display with Quantum Dot technology that enables a wide color gamut. The 4K TV will come in four sizes ranging from 50 to 75 inches, ...
- CES 2020: Samsung’s 8K QLED TVs Use AI Quantum 8K SoC, Add Support For AV1 Videoon January 9, 2020 at 10:00 am
Which, as a refresher, those TVs featured a quantum dot-enhanced LED backlight that is also capable of FALD-like operation – which Samsung calls Direct Full Array Elite technology – driving a peak ...
- VIZIO introduces its brand new TV and audio line-ups at CES 2020on January 7, 2020 at 3:50 pm
Aside from the “best-in-class quantum dot performance and industry-leading peak brightness”, the company ... Take a look at the complete new line of 8K LED and 4K OLED TVs from Sony that have been ...
- TCL 6-Series TVs could bring OLED quality to budget buyers thanks to Mini-LEDon January 7, 2020 at 10:24 am
While past iterations of the 6-Series have offered Full-Array backlights and, most recently Quantum Dots to enhance color saturation, the inclusion of Mini-LED would massively boost black levels and ...
- VIZIO’s 2020 SmartCast TV Lineup Advances Picture Quality Leadership with More Quantum Color Models and First OLED TVon January 7, 2020 at 8:14 am
The TV’s full-array LED backlight with up to an incredible 792 zones of local dimming ensures the deepest blacks and eye-popping contrast. Further elevating picture performance is one of the highest ...
- TCL Mini-LED 8K Roku TV hands-on review: 8K video in all its gloryon January 6, 2020 at 3:09 pm
TCL's TV lineup just got a lot more impressive with an eye-popping 8K LCD TV that boasts thousands of mini-LED backlights, quantum-dot enhancement and a slew of other premium touches. The upcoming TCL ...
- Vizio launches first OLED TVs, plus 4K LED line-up with Dolby Vision HDRon January 6, 2020 at 1:59 pm
Vizio is one such brand – "the fastest growing TV brand with Quantum Dot" – and it has announced new 4K LED and OLED sets, its first ever, at CES 2020. The Vizio OLEDs come in 55 and 65 inch sizes and ...
- CES 2020: Konka To Unveil New LED, QLED And OLED TVson January 6, 2020 at 6:08 am
Konka said it will be first releasing three new series of LED TV and QLED TVs including the H3 Series – LED TV with Android ... Konka’s new Q7 Series – QLED TV with Quantum Dot Technology and Android ...
- Here's your guide to Samsung's 2020 4K and 8K QLED lineon January 5, 2020 at 6:39 pm
Samsung is kicking off CES 2020 with big upgrades to its home entertainment offerings. Here, we'll be breaking down the news on 4K and 8K televisions. As you might expect, it's all about enhancing the ...
- Vizio's LCD TVs go all-out on quantum dots, dimming zones and gamingon January 5, 2020 at 9:04 am
The new 2020 TVs promise better color, better contrast and improved performance for gamers in particular. The company has five ranges of LED TVs -- four of which include quantum dot technology -- and ...
via Bing News