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Front Cover CS V6mg.Indd 1 31/08/2017 16:10 Untitled-1 1 26/07/2017 09:21 Viewpoint by Dr Richard Stevenson, Editor Volume 23 Issue 6 August / September 2017 @compoundsemi www.compoundsemiconductor.net Lighting up silicon with InAs quantum dots MACOM Enabling breakthroughs in optical bandwidth density Novel cooling aid high-power laser diodes Easing the use of GaN power electronics An abundance of key elements for chipmakers Ultraviolet LEDs take aim at disinfection News Review, News Analysis, Features, Research Review, and much more... inside Free Weekly E News round up go to: www.compoundsemiconductor.net Front Cover CS v6MG.indd 1 31/08/2017 16:10 Untitled-1 1 26/07/2017 09:21 Viewpoint By Dr Richard Stevenson, Editor Telling our story POPULAR SCIENCES BOOKS aim to educate the layman. By better is to tell the story the way Johnstone does. It begins with eradicating equations, offering analogies and telling a story with a meeting of visionaries that plot out the rate of improvement a human touch, Joe Public can be entertained while learning in these devices, see where they are destined to go, and put the basics of a subject. plans in place to make this happen. Instrumental in the success is the backing by government, which uses its money very But that’s not the only benefi t of these books. They can be read effectively, alongside the introduction of standards that quash by experts, so that when they are at social gatherings and are the availability of inferior bulbs. asked what they do for a living, they can draw on what’s been written to give an answer that’s engaging and understandable. Read this book and you will also be able to wax lyrical about the benefi ts of LEDs in It is for that reason that I recommend Bob Johnstone’s new agriculture, and how the tuning of the book L.E.D. A History of the Future of Lighting (I offer a emission spectrum throughout the review on p.36) day can help schoolchildren to learn better. Even if you don’t work in the LED sector, you might fi nd that the best way to talk about our industry’s success is to highlight So don’t ignore this book – or, for its key role in the lighting revolution. After all, there’s a good that matter, others that cover great chance that those that you meet in a social setting will advances in our industry, such as have seen LED bulbs in hardware stores. Maybe Jerry Neal’s personal account of they even own some. And are they the growth of RFMD. It is given in impressed by how long they last? Fire in the Belly: Building a World-Leading High-Tech Company If they are rather astute, they might from Scratch in Tumultuous Times. ask what it took to take those puny indicator Armed with anecdotes from books lamps and make them bright enough to such as this one you’ll be able to light up a room. Answering this is not easy. do your bit to promote the benefi ts You could talk about improvements in light of our industry . extraction effi ciency and reductions in droop – but don’t expect this to go down well. Far Editor Richard Stevenson [email protected] +44 (0)1291 629640 Circulation Director Jan Smoothy [email protected] +44 (0)1923 690200 Contributing Editor Rebecca Pool [email protected] Chief Executive Offi cer Stephen Whitehurst [email protected] +44 (0)2476 718970 News Editor Christine Evans-Pughe [email protected] Directors Bill Dunlop Uprichard – EC, Stephen Whitehurst – CEO, Jan Smoothy – CFO, Sales Executive Jessica Harrison [email protected] +44 (0)2476 718209 Jackie Cannon, Scott Adams, Sharon Cowley, Sukhi Bhadal, Jason Holloway USA Representatives Tom Brun Brun Media [email protected] +001 724 539-2404 Janice Jenkins [email protected] +001 724-929-3550 Published by Angel Business Communications Ltd, Hannay House, 39 Clarendon Road, Publisher Jackie Cannon [email protected] +44 (0)1923 690205 Watford, Herts WD17 1JA, UK. T: +44 (0)1923 690200 E: [email protected] Director of Logistics Sharon Cowley [email protected] +44 (0)1923 690200 Design & Production Manager Mitch Gaynor [email protected] +44 (0)1923 690214 Accounts & Multi Media Angel Business Communications Ltd, Unit 6, Bow Court, Fletchworth Gate, Burnsall Road, Coventry CV5 6SP, UK. T: +44 (0)2476 718 970 E: [email protected] The Professional Publishers Association Member Compound Semiconductor is published eight times a year on a controlled circulation basis. Non-qualifying individuals can subscribe at: £105.00/e158 pa (UK & Europe), £138.00 pa (air mail), $198 pa (USA). Cover price £4.50. All information herein 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 publication are not necessarily those of the publisher. Every effort has been made to obtain copyright permission for the material contained in this publication. Angel Business Communications Ltd will be happy to acknowledge any copyright oversights in a subsequent issue of the publication. Angel Business Communications Ltd © Copyright 2017. All rights reserved. Contents may not be reproduced in whole or part without the written consent of the publishers. The paper used within this magazine is produced by chain of custody certifi ed 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 by Angel Business Communications Ltd, Unit 6, Bow Court, Fletchworth Gate, Burnsall Rd, Coventry CV5 6SP. UK. The 2017 US annual subscription 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 Semiconductor, Air Business Ltd, c/o Worldnet Shipping Inc., 156-15, 146th Avenue, 2nd Floor, Jamaica, NY 11434, USA. Printed by: The Manson Group. ISSN 1096-598X (Print) ISSN 2042-7328 (Online) © Copyright 2017. COPYRIGHT COMPOUND SEMICONDUCTOR l AUGUST / SEPTEMBER 2017 l WWW.COMPOUNDSEMICONDUCTOR.NET 3 ViewPoint v3MG.indd 3 31/08/2017 14:58 Volume 23 ISSUE 6 AUGUST / SEPTEMBER 2017 CONTENTS COVER STORY 30 36 So, what do you do? Do you dread trying to explain what we do as an 16 Enabling breakthroughs industry? If so, try reading and re-counting Bob Johnstone’s new book on the LED lighting revolution in optical bandwidth density 40 The monolithic Integrated optical components for long haul, metro and cloud data centres are benefiting from excellence integration of GaN in analogue and photonics technology Combining trench isolation with silicon-on-insulator technology enables monolithic integration of fully isolated power devices 22 Lighting up silicon with quantum dots 44 Power electronics: InAs quantum dots lasers are ideal for silicon Easing the use of GaN photonics: they draw very little power, take up very little space, and can operate over a wide Simplifying a designer’s life with a process design kit temperature range for GaN-based integrated circuits 30 An abundance of key 52 Novel cooling aids elements high-power lasers If demand for GaAs, InP and germanium substrates An efficient cooling architecture holds the key to grows, it can be fulfilled, thanks to sufficient availability trimming the size, weight and power of diode-pumped of gallium, germanium, and indium laser systems 4 WWW.COMPOUNDSEMICONDUCTOR.NET l AUGUST / SEPTEMBER 2017 l COPYRIGHT COMPOUND SEMICONDUCTOR Contents v1.indd 4 31/08/2017 15:07 CONTENTS 44 52 news news analysis 06 Lighting not driving LED growth 12 Ultraviolet LEDs take aim at in 2017 disinfection 07 ARPA-E awards $30 million to research review develop better power converters 58 Understanding microLED 10 08 Hanergy and Audi to integrate deficiencies GaAs solar panels into cars 60 UV LEDs exceed 1W output 10 Osram IR LEDs feature in FOVE Eye-tracking VR headset 61 Uncovering the origin of stacking faults 11 II-VI acquires UK compound semiconductor fab for $80 million 12 COPYRIGHT COMPOUND SEMICONDUCTOR l AUGUST / SEPTEMBER 2017 l WWW.COMPOUNDSEMICONDUCTOR.NET 5 Contents v1.indd 5 31/08/2017 15:07 s news review Lighting not driving LED growth in 2017 STRONG GROWTH in packaged LED and buses. Automotive packaged LED lighting revenue from 2007 to 2014 revenue is forecast to grow 9.2 percent in was the result of consumers replacing 2017, from $1.9 billion to $2.1 billion. incandescent and fluorescent lighting Signage use is boosted by the trend with LED lighting. However, price erosion towards finer pitch displays and the due to competition and the trend toward fact that LED displays are not a mature less robust, inexpensive 2835 packages market; growth is possible by finding new caused revenues to decline by 9 percent business, not only replacement. Signage in 2015 and only 1 percent in 2016, markets include large full colour displays according Jamie Fox, principal analyst, known as videowalls, as well as road lighting and LEDs group, IHS Markit. signs, traffic lights and building lettering. Signage is forecast to grow 11.5 percent Starting in 2017, revenue growth is from $1.8 to $2.0 billion. Horticulture expected to increase by 3 percent as is a smaller market but in percentage prices settle. In 2017, automotive and terms will grow even faster in 2017 than signage segments are growing as signage and automotive. much as lighting, with each of the three applications forecast to be $200 million Lighting growth from 2018 to 2022 higher than packaged LED revenue in is forecast to increase 6 to 7 percent 2016.
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