Optical properties of II-VI colloidal quantum dot doped porous silicon microcavities
Date
2010
Authors
Guan, B.
Qiao, H.
Böcking, T.
Gal, M.
Gooding, J.J.
Reece, P.J.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Applied Physics Letters, 2010; 96(16, article no. 161106):1-3
Statement of Responsibility
Conference Name
Abstract
In this paper we report on the light emitting properties of mesoporous silicon vertical-cavity optical resonators with II-VI colloidal quantum dots selectively deposited in the cavity layer. Optical resonator structures exhibit reflectivity stop bands of several hundred nanometres and resonant modes with line-widths less than 3.5 nm. The observed modification of spectral and spatial emission properties of the quantum dots and tenfold enhancement at the resonance wavelength is consistent with cavity enhanced spontaneous emission. Using this hybrid fabrication approach we show that narrow band light emitting structures may be fabricated over a broad spectral region in the visible and near-infrared.