Compounds build on foundations of silicon industry

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In recent months the technology

promising optoelectronic

downturn

has been biting harder than ever before.

much importance

Whereas

development

past market cycles have shown

integration)

that it says GaAs-on-sili

large drops in revenue, there has always

technology

been continuous

the future of its chip business (see pa;

growth in demand and

hence unit sales (albeit with lower Average time, there have been drops in unit sales of both PCs and mobile phones (see page 6).

GaAs-on-silicon Motorola

that it

before 2003). However, the mere pros1 of such a breakthrough

industry, the

silicon business has been hit far harder

ufacturing

than the compound

microelectronic

sector,

since the latter has a larger proportion next-generation less impacted

technologies by short-term

consumer-oriented,

Consequently,

by allowing higher-perform and optoelectronic

to be made on large-area

in

equipment

using established

low-profit-margin,

current-generation

(transforming

of

which are cut-backs

attracting

technology.

silicon wafe

silicon manufacturi

and economies

of scale) i!

much interest from other p, ! I)

For example,

AIXTRON has announcec

sourcing standard

HeteroWafer

technology

manufacturing

CMOS silicon process-

while focusing their own

for compoun

more on higher-value

silicon-focused

equipment

has acquired self-proclaimed

supplier Vc I “silicon-l

semiconductor technology (such as Conexant

MBE cluster tool supplier Applied Epi

- see issue 6, page 7 - and now Motorola,

claiming an interest in developing

which is closing some silicon fabs and

pound-on-silicon

expanding its CS-I GaAs fab -see page 8).

in Motorola’s

Motorola that it has demonstrated RF power amplifiers

on silicon substrates,

grown by epitaxial

of GaAs on 8” and 12” silicon

substrates

(see page 34). This has been

especially

these can be larger-diameter

the previously

(8” and I ’

match (with InP-on-silicon

Ill-Vs

RMEW

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But now the focusing of the silicon industry dramatically

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silicon epitaxy (see page 16), while m

silicon, SiGe and compound

on compound semiconductors

c

what has been in R&D for many years

have been either closing down or out-

advanced

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(even it it is only to remind everyone

silicon chip manufacturers

ing to foundries

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remain to be seen (wr

itself acknowledging

UK

Colbnte Gloss is manufactured from ECF pulp produced from renewable forest resources. ECF pulp 1s pulp bleached without using elemental chlonne

and economics

But, as a more mature and widespread

semiconductor

Printed by. Eclipse Colour Print Ltd. Kettering. Number: 02076 ISSN 0961.1290

could influence its decision

The manufacturability

Selling Prices). But recently, for the first

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is Motorola putting (

iq mmantimrer.

Mark Telford, Editor

MAGAZINE

VOL

14 - NO

8 -

October ZOOI