Visible-wavelength surface-emitting devices with a 15-fold improvement in electrical-to-optical power conversion efficiency
- 9 January 1995
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 66 (2) , 127-129
- https://doi.org/10.1063/1.113538
Abstract
An AlxGa1−xAs p-n junction light emitting diode, with a thin In2O3 current spreading layer, on the top side, and an indirect band-gap AlAs-Al0.6Ga0.4As distributed Bragg reflector, on the bottom side, has been fabricated and characterized under continuous-wave, room-temperature operation. These relatively simple modifications yield a 15-fold increase in electrical-to-optical power conversion efficiency at λ∼675 nm, and a significant reduction in active region heating—in comparison with standard devices prepared and tested as controls.Keywords
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