200mm GaN-<strong>on</strong>-Si Batch Reactor 5x200mm AIX G5+ AIX G5+ for GaN-<strong>on</strong>-Si ■ Dedicated technology package ■ Compatible with the AIX G5 HT platform ■ Enables Si-style mass manufacturing ■ Builds <strong>on</strong> planetary technology: Excellent and symmetric uniformities, c<strong>on</strong>trolled bow behavior, using standard Si substrates. AIXTRON SE · info@aixtr<strong>on</strong>.com · www.aixtr<strong>on</strong>.com
editorialview by Dr Richard Stevens<strong>on</strong>, Editor The wide bandgap war Wide bandgap poWer electr<strong>on</strong>ics is the hottest sector within our industry. sales in this market are tipped to rocket throughout the foreseeable future, leading to annual revenues for sic and gan devices to hit around $1 billi<strong>on</strong> or more by 2020. at the hugely successful cs internati<strong>on</strong>al, which was held this March, a high proporti<strong>on</strong> of presentati<strong>on</strong>s detailed advances in both classes of transistor and diode, and leading analysts predicted where these devices could make an impact. in the l<strong>on</strong>g-term, they’ll see deployment in the grid. but they’ll need a stepping-st<strong>on</strong>e to get there, which could well be the solar inverter: the time taken to recoup the additi<strong>on</strong>al outlay over an all-silic<strong>on</strong> system is dropping from a few years to a matter of m<strong>on</strong>ths, and this will spur sales of wide bandgap products in this sector. Which widegap material has the greater success in a particular applicati<strong>on</strong> may be decided by the maximum operating voltage of the device. at voltages below 1 kV, many believe that gan-<strong>on</strong>-silic<strong>on</strong> devices will be more successful than their sic cousins, due to a combinati<strong>on</strong> of lower cost and superior performance to silic<strong>on</strong> equivalents. but bey<strong>on</strong>d 1 kV, sic is tipped to dominate, because it is felt that gan-<strong>on</strong>-silic<strong>on</strong> cannot handle such high voltages. not every<strong>on</strong>e agrees with this view. a partnership from M/a com, Mit and the Us department of energy has shown that it is possible to c<strong>on</strong>struct gan-<strong>on</strong>-silic<strong>on</strong> diodes and HeMts with breakdown voltages well in excess of 2 kV. the way to do this, which is detailed in the feature “boosting gan-<strong>on</strong>-silic<strong>on</strong> blocking voltages” (see p42 ), is to use a combinati<strong>on</strong> of sophisticated buffer layers and a field plate. note that it is crucial to optimise the dimensi<strong>on</strong>s and locati<strong>on</strong> of this plate to enhance gan-<strong>on</strong>-silic<strong>on</strong> performance. this project has used commercially produced, 100 mm, gan-<strong>on</strong>-silic<strong>on</strong> epiwafers, highlighting that this combinati<strong>on</strong> can combine low costs with high levels of performance. it will be interesting to see how quickly it takes for high-voltage devices made in this way to appear <strong>on</strong> the market, where they can compete with silic<strong>on</strong> incumbents and a handful of sic products. i, for <strong>on</strong>e, will find it intriguing to watch how the battle for the power electr<strong>on</strong>ics market pans out over the next decade. Editor dr richard stevens<strong>on</strong> C<strong>on</strong>tributing Editor rebecca poole News Editor dr su Westwater Director of SEMI Publishing Jackie cann<strong>on</strong> Senior Sales Executive robin Halder Sales Manager shehzad Munshi USA Rep: brun Media: tom brun Janice Jenkins Director of Logistics shar<strong>on</strong> cowley Design & Producti<strong>on</strong> Manager Mitchell gaynor Circulati<strong>on</strong> Director Jan smoothy richardstevens<strong>on</strong>@angelbc.com +44 (0)1291 629640 editorial@rebeccapoole.com suwestwater@angelbc.com jackie.cann<strong>on</strong>@angelbc.com +44 (0)1923 690205 robin.halder@angelbc.com +44 (0)2476 718109 shehzad.munshi@angelbc.com +44 (0)1923 690215 e: tbrun@brunmedia.com tel: +001 724 539-2404 e: jjenkins@brunmedia.com tel: +001 724-929-3550 shar<strong>on</strong>.cowley@angelbc.com +44 (0)1923 690200 mitch.gaynor@angelbc.com +44 (0)1923 690214 jan.smoothy@angelbc.com +44 (0)1923 690200 Subscripti<strong>on</strong>s Manager debbie Higham debbie.higham@angelbc.com +44 (0)1923 690220 Chief Operating Officer stephen Whitehurst stephen.whitehurst@angelbc.com +44 (0)2476 718970 Directors bill dunlop Uprichard – ceo, stephen Whitehurst – coo, Jan smoothy – cFo, Jackie cann<strong>on</strong>, scott adams, shar<strong>on</strong> cowley, sukhi bhadal Published by angel business communicati<strong>on</strong>s ltd, Hannay House, 39 clarend<strong>on</strong> road, Watford, Herts Wd17 1Ja, UK. t: +44 (0)1923 690200 F: +44 (0)1923 690201 e: ask@angelbc.com angel business communicati<strong>on</strong>s ltd Unit 6, bow court, Fletchworth gate, burnsall road, coventry cV5 6sp, UK. t: +44 (0)2476 718 970 F: +44 (0)2476 718 971 e: info@angelbc.com compound semic<strong>on</strong>ductor is published eight times a year <strong>on</strong> a c<strong>on</strong>trolled circulati<strong>on</strong> basis. n<strong>on</strong>-qualifying individuals can subscribe at: £105.00/e158 pa (UK & europe), £138.00 pa (air mail), $198 pa (Usa). cover price £4.50. all informati<strong>on</strong> herein is believed to be correct at time of going to press. the publisher does not accept resp<strong>on</strong>sibility for any errors and omissi<strong>on</strong>s. the views expressed in this publicati<strong>on</strong> are not necessarily those of the publisher. every effort has been made to obtain copyright permissi<strong>on</strong> for the material c<strong>on</strong>tained in this publicati<strong>on</strong>. angel business communicati<strong>on</strong>s ltd will be happy to acknowledge any copyright oversights in a subsequent issue of the publicati<strong>on</strong>. angel business communicati<strong>on</strong>s ltd © copyright 2013. all rights reserved. c<strong>on</strong>tents may not be reproduced in whole or part without the written c<strong>on</strong>sent of the publishers. the paper used within this magazine is produced by chain of custody certified manufacturers, guaranteeing sustainable sourcing.Us mailing informati<strong>on</strong>: compound semic<strong>on</strong>ductor, issn 1096-598X, is published 8 times a year, Jan/Feb, March, april/May, June, July, august/september, october, november/ december by angel business communicati<strong>on</strong>s ltd, Unit 6, bow court, Fletchworth gate, burnsall rd, coventry cV5 6sp. UK. the 2012 Us annual subscripti<strong>on</strong> price is $198. airfreight and mailing in the Usa by agent named air business ltd, c/o Worldnet shipping inc., 156-15, 146th avenue, 2nd Floor, Jamaica, nY 11434, Usa. periodicals postage paid at Jamaica nY 11431. Us postmaster: send address changes to compound semic<strong>on</strong>ductor, air business ltd, c/o Worldnet shipping inc., 156-15, 146th avenue, 2nd Floor, Jamaica, nY 11434, Usa. printed by: pensord press. issn 1096-598X (print) issn 2042-7328 (<strong>on</strong>line) © copyright 2013. April/May 2013 www.compoundsemic<strong>on</strong>ductor.net 3
Change language