Displays - Page 6

Researchers at the Daegu Gyeongbuk Institute of Science and Technology (DGIST) in South Korea and the University of Basel in Switzerland have developed a new graphene-based photodetector, that is regarded as the world's first graphene-based microwave photodetector. The sensor can reportedly detect 100,000 times less light energy than any existing graphene photodetector and may be useful in applications like wearable devices and flexible displays.

The teams studied the microwave absorption capabilities of bilayer graphene arranged into p-n junctions. Previous attempts to study the microwave range in photodetection met a considerable obstacle - the microwave on the detector itself had much smaller energy than the surface potential difference caused by the surrounding environment. This included residues on the surface of graphene that were left behind during its fabrication.

Today we published a new version of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to November 2016.

The Graphene Batteries Market Report:

• The advantages using graphene batteries
• The different ways graphene can be used in batteries
• Various types of graphene materials
• What's on the market today
• Detailed specifications of some graphene-enhanced anode material
• Personal contact details into most graphene developers

The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!

Researchers at the University of Sussex in England have found that a hybrid material consisting of silver nanowires that are linked together with graphene could be a strong contender in the battle to replace indium tin oxide as the transparent conductor in touch screen displays.

This material is said to be much cheaper to use since only a small amount of it is necessary in order to attain the properties of ITO. The graphene, according to the team, acts as a linker between the nanowires, which means that the network does not need to be dense. The graphene is deposited onto a sprayed network of nanowires by film deposition.

Researchers at Exeter have devised a graphene composite (GraphExeter) that is highly conducting, and now they demonstrate the first prototype of the material in an electroluminescent device, showing its feasibility for luminescent textiles and flexible displays.

The high conductivity of GraphExeter can introduce many improvements to flexible displays. Large screens using existing materials fade to a darker region in the middle due to the sheet resistance. This places a practical limitation in the range of square centimetres on how large the screen can be. The extremely low sheet resistance of GraphExeter - less than 8Ω/□ compared with 1000Ω/□ for pristine single layer graphene and 850Ω/□ for the more commonly used PEDOT/PSS means that screens several square metres in size are feasible.

Today we published a new version of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to July 2016.

The Graphene Batteries Market Report:

• The advantages using graphene batteries
• The different ways graphene can be used in batteries
• Various types of graphene materials
• What's on the market today
• Detailed specifications of some graphene-enhanced anode material
• Personal contact details into most graphene developers

The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!

Researchers from Korea's ETRI Institute developed the world's first transparent OLED prototype that uses a graphene transparent electrode. ETRI demonstrated the new display at the SID 2016 tradeshow.

The prototype display was 26x26 mm in size, with a resolution of 155x60 (121 PPI). The display was a monochrome (orange) display. In the display on show, the graphene-based electrodes were deposited on the backplane of the display.

Researchers from Bilkent University in Turkey developed a new display prototype that is based on a graphene ink deposited on a regular paper. The paper display has high optical contrast and a fast response time. Such a paper-like display can be very flexible and foldable.

To create this display, the researchers used electro-modulation of the optical properties of the multilayer graphene via blocking the interband electronic transitions.

Researchers from Korea's KAIST institute developed a rollable OLED device that uses graphene-based electrodes. The researchers say that the new OLED is much more durable when bent compared to current devices made with ITO electrodes.

The electrodes were made from a stack of materials - titanium oxdies, graphene and conductive polymers. The new OLEDs were also brighter than current devices, and with a higher color gamut. This was achieved by maximizing the resonance within the OLED.

Innova Research recently published a survey that states that the Chinese graphene market revenue for 2015 was estimated at $6.1 million, a 335.7% jump from $1.4 million for 2014.

The survey also specifies that significant progress has been made on the adoption of graphene in a number of industrial applications in 2015, namely touch screens, anti-corrosive coating, and lithium-ion batteries (LIBs). These adoptions are the primary reasons for the soaring Chinese graphene market revenue in 2015.

China-based e-paper developer Guangzou OED Technologies announced that it has developed a new graphene e-paper technology. The company aims to start producing these new screens within a year.

The company says that the new graphene-based paper is brighter and more flexible. The graphene paper is also said to have "more intensity", although it's unclear exactly what this means. It's also not clear what the role of the graphene in this new screen is, but it's likely used as a conductor material in the display's touch panel. It is also possible that the display itself uses graphene electrodes, but this technology is far less mature.