compoundsemiconductor.net: in the lab

Dots speed datacom VCSELs

Mon, 29 Jun 2009 06:02:48 GMT

Transmitters operating well beyond 10 Gbit/s are needed for emerging communication standards. Quantum-dot VCSELs can operate at four times this, and even higher rates are promised with a design incorporating a modulator in the top mirror, says VI Systems' Nikolai Ledentsov.

EU GaN project shows diamond promise

Wed, 24 Jun 2009 14:57:20 GMT

"MORGaN" team demonstrates first GaN growth on single-crystal diamond with a variety of surface orientations.

SiC foundations assist AlN growth

Mon, 22 Jun 2009 06:02:39 GMT

Although AlN substrates have some great characteristics for UV-LED fabrication, it is very difficult to make this material. However, a fast sublimation growth process that deposits AlN onto SiC is producing very encouraging results, including incredibly low defect densities, say Mikael Syväjärvi, Reza Yazdi and Rositza Yakimova from Linköping University.

Tuning the gap in graphene

Tue, 16 Jun 2009 09:09:23 GMT

Results confirm wonder material's potential for future nano-electronics and photonics

Flaw revealed in theory of transistor noise

Mon, 15 Jun 2009 10:33:38 GMT

Progress to low power consumption devices may be hindered

Research Review

Mon, 15 Jun 2009 06:03:01 GMT

Nitrogen radicals repair InN epilayers…HfO₂ dielectric layer increase output power…Native platform extends emitter life.

Exploiting nature's secret stash

Mon, 08 Jun 2009 06:12:48 GMT

Phone-charging shoes? Wireless light switches? Photovoltaics that harness the warmth of radioactive isotopes? Energy harvesting is starting to gain momentum, finds Jon Cartwright.

Foxconn patents nanoparticle LED doping

Fri, 05 Jun 2009 14:01:58 GMT

The behemoth Taiwanese company seeks to protect its method for smoothing both InGaN and AlGaAs active layers.

LEDs get ready to take to the skies

Mon, 01 Jun 2009 06:12:39 GMT

Photonic quasicrystals and a droop-combating layer can create efficient LEDs with well-directed emission for navigational, taxi and landing lights in aircraft, and backlighting cockpit displays. Duncan Allsopp and Philip Shields describe the progress made under the UK's "Novelels" project.

Quantum dots rewrite memory options

Fri, 29 May 2009 12:02:18 GMT

€1 million project will investigate the potential of antimonide quantum dots for use in charge-based data storage.