Physicists at Aalto University have made a breakthrough in revising methods largely discarded 15 years ago.
They have discovered a microscopic mechanism that will allow gallium nitride semiconductors to be used in electronic devices that distribute large amounts of electric power.
The trick is to be able to use beryllium atoms in gallium nitride. Gallium nitride is a compound widely used in semiconductors in consumer electronics from LED lights to game consoles. To be useful in devices that need to process considerably more energy than in your everyday home entertainment, though, gallium nitride needs to be manipulated in new ways on the atomic level.
“There is growing demand for semiconducting gallium nitride in the power electronics industry. To make electronic devices that can process the amounts of power required in, say, electric cars, we need structures based on large-area semi-insulating semiconductors with properties that allow minimising power loss and can dissipate heat efficiently. To achieve this, adding beryllium into gallium nitride – or ‘doping’ it – shows great promise,” explains Professor Filip Tuomisto from Aalto University.
Experiments with beryllium doping were conducted in the late 1990s in the hope that beryllium would prove more efficient as a doping agent than the prevailing magnesium used in LED lights. The work proved unsuccessful, however, and research on beryllium was largely discarded.
Working with scientists in Texas and Warsaw, researchers at Aalto University have now managed to show – thanks to advances in computer modelling and experimental techniques – that beryllium can actually perform useful functions in gallium nitride. The article published in Physical Review Letters shows that depending on whether the material is heated or cooled, beryllium atoms will switch positions, changing their nature of either donating or accepting electrons.
“Our results provide valuable knowledge for experimental scientists about the fundamentals of how beryllium changes its behaviour during the manufacturing process. During it – while being subjected to high temperatures – the doped compound functions very differently than the end result,” describes Tuomisto.
If the beryllium-doped gallium nitride structures and their electronic properties can be fully controlled, power electronics could move to a whole new realm of energy efficiency.
“The magnitude of the change in energy efficiency could as be similar as when we moved to LED lights from traditional incandescent light bulbs. It could be possible to cut down the global power consumption by up to ten per cent by cutting the energy losses in power distribution systems,” says Tuomisto.
The Latest on: Global power consumption
- Cirrus Logic Introduces Industry’s Smallest, Low-Power Boosted Smart Audio Amplifier to Support Global Shift to Mobile Stereo on February 19, 2019 at 7:10 am
Its advanced battery management system and predictive algorithms adapt to changing audio, speaker and battery conditions to minimize power consumption and battery current, without sacrificing audio pe... […]
- Risen Energy signs 323MW PV module supply contract for Ukraine's largest solar power station project on February 19, 2019 at 7:05 am
independent PV power supply systems, as well as solar cells and modules. Risen Energy has opened nearly one hundred offices worldwide and established a global sales network covering Australia ... […]
- BP’s Energy Outlook, 2019 Clean200 Show Undeniable Power of Renewables on February 19, 2019 at 6:20 am
The power sector uses around 75 percent of the increase in ... Demand for oil grows in the first half of the Outlook period before gradually plateauing, while global coal consumption remains broadly f... […]
- Innovation paves for next stage of global energy transformation on February 19, 2019 at 5:33 am
transmission and consumption more flexible and empowering a new generation of energy consumers. Decarbonising the global power sector in line with the Paris Agreement objectives will require an 85 per... […]
- Lenovo Gets Into Consumption-Based Data Center Space on February 19, 2019 at 5:02 am
It also includes a real-time dashboard that shows everything from usage to billing, a metering system that shows power consumption, customer service ... have become key drivers of global server revenu... […]
- Data Center Power (DCP) Market 2019 Receives a Rapid Boost in Economy due to High Emerging Demands by Forecast to 2023 on February 19, 2019 at 3:38 am
intelligent rack PDU and power usage monitoring equipment to reduce the overall power consumption. Many of the companies that are operating in the global data center power market suich as Emerson Elec... […]
- RF Power Amplifier for Cellular Terminal market detailed in new research report on February 19, 2019 at 2:29 am
The competitive analysis offered in the report includes market share, gross margin, product portfolio, consumption, market status, and technologies of leading players operating in the global RF Power ... […]
- Power Management Integrated Circuits market explored in latest research on February 19, 2019 at 1:22 am
The competitive analysis offered in the report includes market share, gross margin, product portfolio, consumption, market status, and technologies of leading players operating in the global Power Man... […]
- Global Dry Type Transformer Market Consumption Volume, Competitive Dynamics And Global Outlook 2028 on February 19, 2019 at 1:19 am
Feb 19, 2019 (WiredRelease via COMTEX) -- Dry type transformers are power transformers with windings encased in ... The Objective of the "Global Dry Type Transformer Market" report is to depict the tr... […]
- Global Power Over Ethernet (POE) Lighting Market : Key Growth Factors and Forecast 2025 | Cisco Systems, Cree, Philips Lighting, Molex, NuLEDs on February 18, 2019 at 11:05 pm
Qyresearchreports include new market research report Global Power Over Ethernet (POE ... Lighting market size (value, production and consumption), splits the breakdown (data status 2013-2018 and forec... […]
via Google News and Bing News