Abstract
GaAs/Alo.3Gao.7As quantum-well LEDs with an asymmetric photonic-crystal structure in the 850 nm range is reported. The device consists of bottom distributed Bragg reflector (DBR), quantum wells (QWs), and top DBR, with a photonic-crystal structure formed within the p-type ohmic contact ring for light extraction. The collimated light output was obtained using an asymmetric photonic-crystal structure for light extraction. The spontaneous emission can be transmitted out of photonic-crystal air-holes.
Original language | English |
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Pages (from-to) | 327-332 |
Number of pages | 6 |
Journal | International Journal of Electrical Engineering |
Volume | 16 |
Issue number | 4 |
State | Published - 1 Aug 2009 |
Keywords
- Asymmetric
- Light-emitting diode (LED)
- Photonic-crystal (PhC)