Browsing Weidong Zhou, Ph.D. by Title
Now showing items 1-10 of 10
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Colloidal quantum dot absorption enhancement in flexible Fano filters
(IEEE, 2010-02-25)We report here modified absorption property of colloidal quantum dots CQDs inside flexible Fano filters—made of patterned single crystalline silicon nanomembrane transferred onto flexible plastic substrates. Enhanced ... -
Coupled Bilayer Photonic Crystal Slab Electro-Optic Spatial Light Modulators
(IEEEDepartment of Electrical Engineering, The University of Texas at Arlington, March 1, 2)We demonstrate here a surface-normal ultracompact Fano resonance electro-optic spatial light modulator employing a stacked photonic crystal membrane capacitor-like structure. Vertically coupled optical resonance near 1.5 ... -
Encapsulation for efficient electrical injection of photonic crystal defect mode surface-emitting lasers
(IEEE, 2006-01-31)We propose and report an encapsulated photonic crystal concept for efficient electrical injection of photonic crystal surface-emitting lasers. Detailed rate equation analysis reveals a significant threshold current ... -
Fano filters based on transferred silicon nanomembranes on plastic substrates
(IEEE, 2008-08-13)We report here the characteristics of surface-normal optical filters based on Fano resonances on patterned single crystalline silicon nanomembranes SiNMs , which were fabricated and transferred onto transparent plastic ... -
Large-area InP-based crystalline nanomembrane flexible photodetectors
(IEEE, 2010-03-25)Large-area (3x3 mm2) flexible photodetectors were realized, based on crystalline InP semiconductor nanomembranes transferred to flexible polyethylene terephthalate substrates. Very low dark current a few microamperes ... -
Microstructured surface design for omnidirectional antireflection coatings on solar cells
(Original publisher: American Institute of PhysicsDepartment of Electrical Engineering, 2007-11-27)We recently demonstrated a new process for the formation of partially spherical structures as an omnidirectional antireflection coating (omni-AR). In this paper, we report the simulation results of the angular and spectral ... -
Optical Refractive Index Sensing Based on High-Q Bound States in the Continuum in Free-Space Coupled Photonic Crystal Slabs
(MDPIDepartment of Electrical Engineering, The University of Texas at Arlington, 2017-08-11)High sensitivity (S) and high quality factor (Q) are desirable to achieve low detection limit in label-free optical sensors. In this paper, we theoretically demonstrate that single-layer and coupled bi-layer photonic crystal ... -
Resonance control of membrane reflectors with effective index engineering
(IEEE, 2009-07-14)We report here broadband membrane reflectors based on Fano resonances in patterned silicon nanomembranes. Resonance control of the reflectors was realized either by partially removing buried oxide layer underneath the ... -
Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells
(Original publisher: Journal of Applied PhysicsUniversity of Texas at ArlingtonDepartment of Electrical Engineering, NanoFAB Center, 2009-05)Solution-processed spherical surface textures are demonstrated on commercial amorphous silicon solar cells. The texture is formed with a monolayer of silica microspheres by convective coating, followed by a spin-on-glass ... -
Surface texturing by solution deposition for omnidirectional antireflection
(Original publisher: Applied Physics LettersUniversity of Texas at ArlingtonDepartment of Electrical Engineering, 2007-08)Surface texturing by solution deposition has been developed for antireflection in solar cells. The surface texture is formed by a monolayer of microscale silica particles partially immersed into a spin-on-glass film with ...