news digest ♦ Novel Devices
metal, Pt/Au and found similar results concluding this is a general property of metal-AlGaN/GaN Schottky diodes.
From these results, the researchers think it would be possible to realise synchronous radio-frequency/ optical communications using an AlGaN/GaN HEM- LET, and an all-on-chip opto-coupler for III-nitride power electronics.
They also suggest that the metal-AlGaN/GaN light- emitting Schottky diode provides an alternative for micro-display with unique advantages. The back electrode is served by a high-mobility 2DEG channel, and the pixel is defined by the top Schottky contact, eliminating th mesa etching process and current spreading design and allowing for a higher resolution and smaller pixel size.
‘P-doping-free III-nitride high electron mobility light- emitting diodes and transistors’ by Baikui Li et al, appears i Appl. Phys. Lett. 105, 032105 (2014);
http://dx.doi.org/10.1063/1.4890238
competitors to produce materials in volume similar to ours without breaching our patents.”
The patents provide broad IP protection for advances Quantum Materials has achieved in economical high-volume quantum dot (QD) manufacturing. In addition, the Bayer patents cover volume production technology for heavy metal-free (HMF) quantum dots and nano-particles; increasing quantum yields for HMF quantum dots; and hybrid organic quantum dot solar cell (QDSC) production as well as a surface modification process for increased efficiency of high performance solar cells and printed electronics. The patent families were acquired through a cash purchase agreement and financial details will remain private.
The quantum dot-related patents extend Quantum Materials’ ability to synthesise numerous heavy metal-free organic periodic table groups in addition to its own inorganic Group II-VI composites. The company intends to incorporate each patent into its advanced production processes, including high yield InP/ZnS nanocrystals, a heavily researched QD in high demand in optoelectronics.
Quantum Materials buys Bayer’s Quantum Dot Patents Deal protects IP for automated QD manufacturing
The solar-related patents describe the fundamental design of quantum dot solar cells and processes for optimising quantum dots for solar and other printed electronics applications. The solar patents enhance Quantum Material’s licensed patent on printing OLED and QD solar cells and other printed electronic devices by gravure or high-speed roll-to- roll.
Quantum Materials Corporation (QMC)) has bought five sets of patent families from Bayer Technology Services GmbH, the major innovation driver for Bayer AG of Leverkusen, Germany.
“We acquired these patents to not only expand our technology portfolio in heavy metal-free and QDSC production, but also to protect the advances we have made to date in the volume manufacturing of nanoparticles, including quantum dots,” said Stephen Squires, Quantum Materials’ CEO and president. “Bayer is a research pioneer in the nanotech and QD fields and these early filings were awarded with broad claims. It will be very difficult for
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www.compoundsemiconductor.net Issue VI 2014
“Bayer Technology Services has been successfully working in the field of nanotechnology for more than 30 years . We are very happy that Quantum Materials is also using our patents to invest into new markets Bayer is not focusing on,” adds Guenter Bachlechner, head of technology development and senior vice president of Bayer Technology Services .
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