Ultraviolet light-emitting diodes operating in the 340 nm wavelength range and application to time-resolved fluorescence spectroscopy

Peng, H.; Makarona, E.; He, Y.; Song, Y.-K.; Nurmikko, A. V.; Su, J.; Ren, Z.; Gherasimova, M.; Jeon, S.-R.; Cui, G.; Han, J.
August 2004
Applied Physics Letters;8/23/2004, Vol. 85 Issue 8, p1436
Academic Journal
We report on the development of UV light-emitting diodes in the 340 nm wavelength range, based on quaternary AlGaInN quantum-well active media. Output powers up to 1 mW from small area devices (<100 μm diameter) directly off a planar chip have been achieved. The devices have been operated as subnanosecond pulsed sources to demonstrate their applicability to compact time-resolved fluorescence spectroscopy.


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