Regensburg 2004 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 15: Photonische Kristalle III
HL 15.2: Vortrag
Dienstag, 9. März 2004, 10:30–10:45, H17
Periodically Arranged Point Defects in a Two Dimensional Photonic Crystal — •Stefan Richter1, Stefan Schweizer2, Cecile Jamois1, Reinald Hillebrand1, Nikolai Gaponik3, Andrey Rogach4, Ralf Wehrspohn2, and Margit Zacharias1 — 1Max-Planck-Institut für Mikrostrukturphysik — 2Universität Paderborn — 3Universität Hamburg — 4Ludwig-Maximilians-Universtität München
We present and charcterize hexagonal point defects in a two dimensional photonic crystal based on macroporous silicon. These point defects are prepatterned periodically, forming a superstructure within the photonic crystal after electrochemical etching. Spatially resolved, optical investigations related to morphological properties, like defect concentration and pore radius, are compared to bandstructure calculations. The confined defect states are identified and their interaction is evaluated quantitatively. To investigate the influence of the cavity on internal light emitters, colloidal HgTe quantum dots have been infiltrated into single cavities and their emission was measured by photoluminescence.