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Author Yin, Jian ♦ Wang, Xiaowei ♦ Paiella, Roberto ♦ Cui, Xiaorui ♦ Sookchoo, Pornsatit ♦ Lagally, Max G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CRYSTALS ♦ EFFICIENCY ♦ FILMS ♦ FLEXIBILITY ♦ GERMANIUM ♦ LASERS ♦ LAYERS ♦ MEMBRANES ♦ OPTOELECTRONIC DEVICES ♦ PEAKS ♦ PHOTOLUMINESCENCE ♦ RESONANCE ♦ STRAINS ♦ STRESSES ♦ VISIBLE RADIATION
Abstract Flexible photonic-crystal cavities in the form of Si-column arrays embedded in polymeric films are developed on Ge nanomembranes using direct membrane assembly. The resulting devices can sustain large biaxial tensile strain under mechanical stress, as a way to enhance the Ge radiative efficiency. Pronounced emission peaks associated with photonic-crystal cavity resonances are observed in photoluminescence measurements. These results show that ultrathin nanomembrane active layers can be effectively coupled to an optical cavity, while still preserving their mechanical flexibility. Thus, they are promising for the development of strain-enabled Ge lasers, and more generally uniquely flexible optoelectronic devices.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-06-13
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 24


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