Antimonide and Dilute Nitride Nanostructures for Mid-infrared Light Sources

When?

Monday 6 December 2010, 16:00

Where?

2ATI02

Open to:

Staff, Students

Speaker:

Prof. Tony Krier, Lancaster University

The mid-infrared spectral range (2-5 μm) is of great interest since light sources and detectors operating in this wavelength range could be used for a wide variety of applications. However, there are challenges in achieving efficient device operation in narrow gap III-V materials due to unfavourable band structure and strong non-radiative recombination. The development of dilute nitride alloys and InSb quantum dots offers some potential to overcome these limitations. MBE growth and characterization of InAsN, InAsN(Sb) strain balanced MQW and type II InSb quantum dot structures will be described along with results from mid-infrared LEDs and lasers.