| Autor: |
A.A. Erchak, D.J. Ripin, S. Fan, G.S. Petrich, J.D. Joannopoulos, L.A. Kolodziejski, E.P. Ippen |
| Rok vydání: |
2000 |
| Předmět: |
|
| Zdroj: |
Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088). |
| DOI: |
10.1109/cleo.2000.906812 |
| Popis: |
Summary form only given. Enhanced light extraction is obtained from a light-emitting diode (LED) containing a two-dimensional (2D) photonic band gap (PBG) crystal. The 2D photonic crystal prohibits the propagation of light within a certain range of frequencies in the plane of the PBG. Several methods to modify light emission using a 2D photonic crystal have been studied. A 2D PBG is fabricated in the top cladding layer of an InGaP/InGaAs quantum well structure that emits at /spl lambda/=980 nm. The photonic crystal is designed such that the emission wavelength lies inside the photonic band gap eliminating the coupling to lateral guided modes within the semiconductor, that is a major source of loss in conventional LEDs. In our experiments, the surface normal photoluminescence (PL) at 980 nm is enhanced by a factor of 6 in the presence of a photonic crystal. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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