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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 www.compoundsemiconductor.net 3
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August / September 2011Volume 17 Number 6
CONNECTING THE COMPOUND SEMICONDUCTOR COMMUNITY
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
40+ Programs and Events
the elements of innovation
11-13 October Dresden, Germany
Untitled-9 1 06/06/2011 12:42
August / September 2011 www.compoundsemiconductor.net 5
Volume 17 Number 6
CONNECTING THE COMPOUND SEMICONDUCTOR COMMUNITY contents
industry & technology
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 www.compoundsemiconductor.net August / September 2011
India is set to benefit from CPVTHERMAX LIMITED and Amonix, Inc. haveannounced an agreement that will brin