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Lab & Fab


Friday 15th November 2013
USC chemists have created a solvent which is able to dissolve a series of nine semiconductors made from combinations of arsenic, antimony, bismuth, sulphur, selenium and tellurium. Applying this solution as a thin film to substrates like glass and silicon and evaporating the solvent leaves a high-quality film of crystalline semiconductor - perfect for use in electronics
Monday 11th November 2013
Using a simple barium (Ba) evaporation technique in a molecular oxygen background, it is now possible to grow crystalline BaO films on GaAs (100) substrates even at room temperature. Such a BaO buffer layer has been found to decrease the density of interface defects at the Al2O3/GaAs(100) junction
Sunday 10th November 2013
Incorporating miniscule amounts of sodium and potassium into the copper indium gallium diselenide layer can alter its electronic properties and improve efficiency
Friday 8th November 2013
Accurate realisation of resistance in terms of elementary charge e and the Planck constant h is independent of other factors. researchers say it can therefore be used as a universal standard for resistance
Sunday 20th October 2013
An optical information carrier composed of tungsten and silicon nitride can store information for extremely long periods of time, with each bit being written using etching techniques
Sunday 6th October 2013
A new type of photodiode composed of silicon carbide and gallium oxide shows promise for space-based communication and monitoring ozone depletion
Wednesday 2nd October 2013
A 1 ┬Ám diameter micropillar composed of a GaAs layer sandwiched between two 'Bragg stacks' made from alternating layers of GaAs and AlAs emits a single photon exactly at a desired moment in time
Tuesday 1st October 2013
New low-heat, high-efficiency white lighting LD options could avoid the droop issue associated with LEDs
Wednesday 25th September 2013
As the number of the cascaded LEDs increases, efficiency droop is greatly reduced
Wednesday 25th September 2013
The indium arsenide antenna arrays enable the detection of small volumes of materials with a standard infrared spectrometer
Tuesday 24th September 2013
Suitable for use in lasers, a novel preparation method of cadmium telluride quantum disks can leads to more stable nanocrystals compared to conventional preparation methods. Tuning the shape of the disks can strongly improve conditions for lasing or single-photon emission
Monday 23rd September 2013
Scrutinising samples with several microscopes reveals the presence of anti-phase boundaries in GaP that jump from one atomic plane to another
Wednesday 18th September 2013
Etching a sacrificial GaN layer with oxalic acid boosts LED light extraction
Tuesday 17th September 2013
A novel etching method can make the surface of indium phosphide nanowires much smoother, and with fewer imperfections
Tuesday 17th September 2013
It is possible to improve the passivation of PbS QDs by using an optimised lithium fluoride thickness
Wednesday 11th September 2013
Gallium nitride devices for efficient power electronics can handle currents of up to 100 A and breakdown voltages beyond 600 V
Tuesday 10th September 2013
The doped wires enable LED tuning at precise frequencies for commercial applications
Tuesday 10th September 2013
A new discovery could enhance optoelectronic devices and solar cell performance
Monday 9th September 2013
A new method to grow germanium crystals at low temperatures may lead to next-generation large-scale integrated circuits and future flexible electronics
Friday 6th September 2013
With a new connection, the overall efficiency of solar energy devices, including GaAs based ones, can reduce the cost of solar energy production
Friday 6th September 2013
Turning on a light, a composite can change from a metal to a material that partly conducts current
Monday 2nd September 2013
New research paves way for nanoparticle-based 'ink' to make printable or spray-on solar cells
Friday 30th August 2013
A novel gallium phosphide/catalyst structure can be used to absorb visible light
Tuesday 27th August 2013
A new discovery could one day lead to electronic materials that provide both computation and data storage