A model for the electrical activity of hydrogen in almost any material - semiconductor, insulator and even aqueous solution - has been developed by Chris G Van de Walle of the Palo Alto Research Center (PARC) and J Neugebauer of Berlins Fritz Haber Institut der Max Planck Gesellschaft (Nature, June 5, 2003).

The model only needs some basic information about
the electronic band structure of the host material.

The theoretical presentation provides a physical explanation that connects
the behaviour of hydrogen to the line-up of electronic band structures at
heterojunctions. The researchers use the local density approximation and the
pseudo-potential-plane-wave method of density functional theory.

The scientists believe that a better understanding of hydrogen in solids is
needed to support improved high-permittivity dielectrics (high-k in the semi
world) for ICs, hydrogen storage systems and proton-exchange membranes for
fuel cells.

AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

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