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Raman thermography, a new technique for measuring channel temperature in semiconductor electronic devices developed at the University of Bristol, has been used by many companies to characterise their semiconductor devices. The technology has enabled companies to develop more robust, reliable, higher performing devices and circuits for high-end space, radar, communication and power conversion applications. This is illustrated here in detail on the example of the company, United Monolithic Semiconductor (UMS) (Germany-France), which used the technique to improve the lifetime of its Gallium Nitride (GaN) and Gallium Arsenide (GaAs) semiconductor devices so that they meet customer requirements for product qualification. Corresponding impact resulted for the companies TriQuint (USA), Northrup Grumman (USA), QinetiQ (UK), Selex Galileo (UK & Italy), NXP (UK & Netherlands), Thales Alenia Spaciale (France), Sharp (Japan) and Hitachi Cable (Japan).
Research on the growth of gallium nitride (GaN) light-emitting diode (LED) structures has led to the creation of two spin-out businesses (subsequently sold), has assisted Forge Europa Ltd in expanding its sales of LED-lighting products, has helped AIXTRON to achieve sales of related GaN-growth equipment [text removed for publication], & has enabled Plessey Semiconductors Ltd to manufacture the world's first commercially available LEDs on 6-inch Si (& the first LEDs to be manufactured in the UK).
The development by Cambridge University staff of compact semiconductor sources and detectors of Terahertz radiation has opened up this part of the electromagnetic spectrum to commercial use for the first time, enabling many applications. In medicine these applications include the analysis of drugs and the detection and imaging of cancer; in security applications the detection and imaging of explosives; and in the semiconductor industry the detection and imaging of buried defects in semiconductor wafers. High power Terahertz lasers are used in gas sensors, for imaging and as local oscillators. This technology has been exploited by a spin-off company TeraView which has 25 employees, has raised £16M in funding, £3.5M since 2008, and has sold 70 imaging systems, half since 2008 at an average cost of $300K each.
Researchers within the Department of Physics and Astronomy at UCL have investigated the properties of defects in bulk HfO2 and at Si/SiOx/HfO2 interfaces. Results have been used by an industrial partner, SEMATECH (SMT), to improve the quality and reliability of high-performance microelectronic devices based on transistors. This has helped SMT to meet project objectives on behalf of member companies such as Intel and IBM, and UCL research results have been consistently highly evaluated by these companies. Recommendations made by SMT have been implemented by industrial partners in their currently manufactured devices, such as the 22nm process technology released by Intel in 2011.
Research carried out at Warwick into the growth of silicon-based layered semiconductors has had a variety of impacts in the fields of microelectronics and solar energy generation. In 2004, a spin- out company AdvanceSis was created to exploit the patent portfolio of Warwick's NanoSilicon Group, with an initial £300 k of Regional Development Fund support. The company, having focused on the business of solar energy generation through concentrator photovoltaic (CPV) technology and renamed Circadian Solar, was valued at £3.5 million by the end of 2011. Further impact of the Warwick silicon research, in the period since 2008, has come in the form of joint R&D programmes with companies in the electronics and ICT sectors, including supplying advanced semiconductor materials and by providing highly skilled employees trained in the research group.
Research at Manchester has led to the development of a new class of high performance magnesium alloys based on the addition of rare-earth alloying elements. The new alloys combine low density and the highest strength of any magnesium alloy. Used to substitute for aluminium in aerospace and automotive they produce weight savings of 35% improving performance and reducing fuel consumption. Commercialisation of these alloys by Magnesium Elektron (ME), the international leader in magnesium alloy development, contributes over $20m per annum to company revenue. This includes development of the first commercial product available for bioresorbable magnesium implants, SynermagTM, launched in 2012.
The development of the chemistry of Selectfluor® (F-TEDA-BF4) has resulted in this Manchester-discovered reagent becoming the world's most widely used commercial electrophilic fluorinating agent to introduce fluorine into a range of pharmaceuticals and agrochemicals. Annual worldwide production is ca. 25 tonnes and sales estimated to be US$7.5m. Selectfluor is used in the synthesis of fluticasone, a fluorinated corticosteroid which is the active ingredient in GSK's Advair ($3.6bn sales in 2010) used in the treatment of asthma and chronic obstructive pulmonary disease symptoms; top 25 selling drugs Flixonase, Flixotide, Flonase, Flovent HFA and Advair Diskus which had total sales of over $17bn between 2009-2012.
Research on ester liquids (ELs) has proved they can be used in high-voltage (HV) transformers, bringing economic and safety advantages to the power industry and environmental benefits to society. Impact includes revisions to National Grid's oil policy recommending ester-filled HV transformers for use in London and the design and operation of the first 132kV "green" transformer (valued between £1m and £2m). The research has led directly to the creation of two international standards for professionals in global power utilities specifying the use of ELs in transformers. These developments have contributed directly to Manchester SME M&I Materials increasing sales from £15m (2008) to £29m (2012).
Our research on semiconductor materials and devices has led to the establishment by e2v Technologies of a combined manufacturing, research and development facility within the School of Physics and Astronomy. We have adapted and transferred device simulation software to e2v, and have provided epitaxially-grown semiconductors and access to fabrication facilities which have been used in their manufacturing processes. Devices fabricated within the facility, which was opened in 2011, have generated sales of £7M for e2v. This initiative has also led to shifts in the investment priorities of e2v, and mitigated risks to the company arising from import restrictions associated with the US International Traffic in Arms Regulations (ITAR).
Research (1993-2008) on novel silicon architectures and design methodologies for digital signal and video processing led to the creation of world leading semiconductor IP cores (chip designs) for implementing the main video and image compression standards including H.264, MPEG4, MPEG2, and JPEG2000. These have been licensed to semiconductor manufacturers worldwide including Panasonic, Sony, Toshiba and Sharp. Since 2008, such encoders/decoders have been incorporated into all DTV/HDTV SoCs produced by Conexant, NXP, Trident Microsystems and Entropic. They have also been used as the hardware acceleration engines in Intel's C2110 Media Processor. At least 150 million chips worldwide having been manufactured incorporating this technology.