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  • An Angel Business Communications publication August / September 2011 Volume 17 Number 6

    RED LASERSCinema screens and medicine

    can spur market growth

    Solid-state lightingGaN-on-silicon LEDsclose the gap withconventionalequivalents

    ICNS-9LED droop debaterages on in Glasgow

    RF powerNXP complementsits silicon LDMOSwith GaN HEMTs

    Faster transistorsNovel designs andmaterials aid thesurge towards ultra-high speeds

    The time for CPVDeployment of grid-tied MW systems starts to take off

    LED researchAtom probe rejectsindium clustering inquantum wells

    Front Cover Final2.qxp 19/8/11 14:28 Page 1

  • Solutions for HIGH BRIGHTNESS LEDManufacturing

    Nano Imprint Lithography for beam shaping and enhanced light extraction

    Handling and processing of thin and bowed wafers

    Wafer bonding for layer transfer

    Optical lithography and resist processing solutions

    Project1 24/1/11 14:07 Page 30

  • August / September 2011 3


    Editor-in-ChiefDavid Ridsdale +44 (0)1923 690200

    Consultant EditorRichard Stevenson PhD +44 (0)1291 629640

    News EditorDr. Su Westwater

    Director of SOLAR & IC PublishingJackie Cannon +44 (0)1923 690205

    Account ManagersRobin Halder (0)2476 718109

    Shehzad Munshi (0)1923 690215

    USA RepresentativesBrun MediaTom Brun E: tbrun@brunmedia.comTel: 724 539-2404

    Janice Jenkins E: jjenkins@brunmedia.comTel: 724-929-3550

    Director of Logistics Sharon Cowley (0)1923 690200

    Design & Production Manager Mitchell Gaynor +44 (0)1923 690214

    Circulation DirectorJan Smoothy +44 (0)1923 690200

    Subscriptions ManagerDebbie Higham (0)1923 690220

    Chief Operating OfficerStephen Whitehurst (0)2476 718970

    Directors Bill Dunlop Uprichard CEOStephen Whitehurst COOJan Smoothy CFOJackie Cannon, Scott Adams,Sharon Cowley, Sukhi Bhadal

    Published byAngel Business Communications Ltd,Hannay House, 39 Clarendon Road,Watford, Herts WD17 1JA, UKT: +44 (0)1923 690200F: +44 (0)1923 690201

    Angel Business Communications LtdUnit 6, Bow Court, Fletchworth Gate,Burnsall Road, Coventry CV5 6SPT: +44 (0)2476 718 970F: +44 (0)2476 718 971

    Compound Semiconductor is published eight times a year ona controlled circulation basis. Non-qualifying individuals cansubscribe at: 105.00/158 pa (UK & Europe), 138.00 pa (air mail), $198 pa (USA). Cover price 4.50. All informationherein is believed to be correct at time of going to press.The publisher does not accept responsibility for any errors and omissions. The views expressed in this publicationare not necessarily those of the publisher. Every effort hasbeen made to obtain copyright permission for the material contained in this publication.Angel Business Communications Ltd will be happy toacknowledge any copyright oversights in a subsequent issueof the publication. Angel Business Communications Ltd Copyright 2011. All rights reserved. Contents may not bereproduced in whole or part without the written consent ofthe publishers. The paper used within this magazine isproduced by chain of custody certified manufacturers,guaranteeing sustainable sourcing.

    US mailing information: Compound Semiconductor (ISSN 1096-598X) is published 8 times a year Jan/Feb, March,April/May, June, July, August/September, October,November/December for a subscription of $198 by Angel Business Communications Ltd, Hannay House,39 Clarendon Road, Watford, Herts WD17 1JA, UK.Periodicals postage paid at Rahway, NJ. POSTMASTER: sendaddress changes to: Compound Semiconductor,c/o Mercury International Ltd, 365 Blair Road, Avenel, NJ 07001

    Printed by: Pensord Press.ISSN 1096-598X (Print)ISSN 2042-7328 (Online) Copyright 2011.

    August / September 2011Volume 17 Number 6


    Keeping the communitytogetherIve just returned from the ninth International Conference on Nitride Semiconductors, which was,without doubt, a very good meeting.

    You know that a strong programme has been put together when you want to be in two places atonce. And thats how I felt on several occasions, including the time I went to an excellent talkfrom Toyota on a pair of devices that it is developing for delivering electrical conversion in hybridelectric vehicles. While I was there, I had to miss what was certain to be an interestingpresentation from Samsung on their development of GaN LEDs on 8-inch silicon.

    This Korean outfit gave several talks, including a fascinating account of how to produce LEDsspanning a vast colour range on pyramid-shaped nanostructures. Vertical variants producingpromising results were reported by Osram Opto Semiconductors, and this company alsorevealed its progress in green lasers.

    However, these companies were not joined by other big names in the opto-field, such asLumileds, Cree and Nichia, who didnt speak at the meeting. In my opinion, it was their absencethat prevented the conference from being a truly great one, like it was in Las Vegas in 2007,when on one memorable afternoon several of the big LED chipmakers went head-to-head asthey detailed their latest lab results.

    Input from companies was also lacking on the laser diode front, with the likes of Nichia, Rohmand Sumitomo not giving talks at the conference. And unfortunately GaN RF manufacturerswere even thinner on the ground.

    Given that the vast majority of academic research presented at the conference targetsimprovements to device performance, I feel that the lack of talks by the leading chipmakers isnot healthy. That is because presentations by the big firms detailing state-of-the-art performanceand potential roadblocks for further success will motivate many academics and show themareas where tomorrows research can have commercial impact.

    The absence of the GaN RF makers is not a really big concern for me, because these firms doget together at other conferences, such as CS Europe and CS Mantech. But what about theLED chipmakers that will together drive a revolution in general illumination?

    As far as Im aware, these firms dont have a conference that focuses at the chip level on LEDmanufacturing. And judging by the evolution of the silicon industry, really high volumeproduction requires such gatherings, which can play a role in agreeing standards and helping toimprove manufacturing processes.

    It will be interesting to see what happens. And while I wait, Ill look forward to hearing manygreat talks at the next ICNS, which will be held in Washington DC in 2013.

    Richard Stevenson PhDConsultant Editor

    Comment Final.qxp 18/8/11 16:32 Page 3

  • Strength of Europe 35 Years SEMICON Europa - Building on the

    Co-located with Plastic ElectronicsConference and Exhibition 2011

    Exhibition and Programs focus on the hot Topics and current Challenges: MEMS












    350+ Exhibitors

    40+ Programs and Events

    the elements of innovation

    11-13 October Dresden, Germany

    Untitled-9 1 06/06/2011 12:42

  • August / September 2011 5

    Volume 17 Number 6


    industry & technology





    11 12


    06 India is set to benefit from CPV First Solar heads to Copper Mountain for new deal

    07 China heading for global LED leadership by 2015Saphire sales for ARC

    08 Mobile shipments see massive growth in 2011Model K1 expands operations

    10 Kyma adds n+ bulk GaNAscent Solar signs strategic deal inChina opening opportunities

    11 Agilent teams up with DavisCree achieves record revenueGaAs cells launched into space

    12 Chinas LED outlook as been boosted with new entrants into the expanding market

    14 Crowd pleasing topicsGreen lasers and LED droop were two of thebig topics at this years ICNS-9. Richard Stevenson reports on the many and varied highlights at this international event

    23 Going with GaNNXP has spent many years developing power transistors and it now reveals its GaN-on-SiC products that are designed to complement its current portfolio

    28 Red laser market ignitesRed lasers have had a major if unknown rolein the film world and with recent advances the cinematic role is about to explode

    33 GaN 500 GHz transistorsResearchers are turning to novel transistor geometries and new faces of GaN to spur the speed of these devices to unprecedented levels

    36 CPV momentum starts increasingThe concentrated photovoltaic market has been one of great potential for some time.With recent technological advances and cost reductions it is beginning to show the results it has been promising

    41 Research ReviewAtom probe unveils indium clusteringTiny lasers show PIC promiseTelecom credentials bolstered by dotsAuger is not to blame for LED droopSapphire cuts current leakage in HEMTs

    Contents Final02.qxp 22/8/11 08:59 Page 5

  • 6 August / September 2011

    news review

    India is set to benefit from CPVTHERMAX LIMITED and Amonix, Inc. haveannounced an agreement that will brin