epitaxial layer

epitaxial layer

[‚ep·ə′tak·sē·əl ‚lā·ər]
(solid-state physics)
A semiconductor layer having the same crystalline orientation as the substrate on which it is grown.

epitaxial layer

In chip making, a semiconductor layer that is created on top of the silicon base rather than below it. See molecular beam epitaxy.
References in periodicals archive ?
GaN deposition is one of the most promising techniques to improve the light output of LEDs and involves the deposition of a thin GaN epitaxial layer on a patterned sapphire substrate (PSS).
The 'Global and Chinese LED Epiwafer Industry Report' also focuses on raw materials and devices for the industry such as different substrates (sapphire SiC Si ZnO GaN) various Epitaxial Layer Materials (GaN AlGaInP InGaN GaP GaAsP).
In the case of inversion type conductivity of the epitaxial layer, the silicon atoms continually start to form nodes inside the subnet of gallium and through this process to increase the concentration of low donor levels near the bottom of the conductivity band.
Among specific topics are growing bulk crystal at a constant rate using a new design of resistive furnace, the solution growth of 3C-SiC single crystals by the cold crucible technique, Raman scattering studies of stress distribution around dislocation, the electronic band structure of cubic silicon nanowires, the anisotropic etching of SiC in the mixed gas of chlorine and oxygen, the temperature dependence of plasma chemical vaporization machining of silicon and silicon carbide, the influence of passivation oxide properties on SiC field-plated buried gate MESFETs, a high power-density converter, surface morphology in an AIN epitaxial layer grown on various SiC substrates by the sublimation closed space technique, and diamond doped by hot iron implantation.
A structure of LED chips in which anodes and cathodes are on the epitaxial layer, and the chips are assembled after being turned upside down.
Toshiba realized this breakthrough performance enhancement by optimizing the epitaxial layer and chip structures for 6GHz-band operation and by adopting a four-chip combination structure to minimize heat build-up.
The CTC has a comprehensive schedule of classes including basic MOCVD system training, epitaxial layer optimization introductions and advanced hands-on classes in hardware maintenance and trouble-shooting.
ST has executed an innovative and effective end-run on the problem with its new 60om epitaxial layer surface-micromachining process.
5 m for both buffer and epitaxial layer, our MaGIC process uses a much thinner GaN layer compared to the 8 m thickness typical on most other LED processes," said Mike Snaith, operations director at Plessey.
HEILBRONN, Germany -- TELEFUNKEN Semiconductors announces today the availability of high quality in-line Si and SiGe epitaxial deposition service for customers, commercial and non-commercial, worldwide to address growing in-line epitaxial layer market requirement for the high speed amplifier and power driver applications.
HRXRD is capable of measuring epitaxial layer composition, thickness, density, strain and relaxation of single and multi-layer stacks.
8-micron, surface micro-machining THELMA (Thick Epitaxial Layer for Micro-gyroscopes and Accelerometers) process combines variably thick and thin poly-silicon layers for structures and interconnections.