Recent Submissions

  • Resonance control of membrane reflectors with effective index engineering 

    Zhou, Weidong; Chuwongin, Santhad; Qiang, Zexuan; Chen, Li; Pang, Huiqing; Ma, Zhenqiang; Yang, Hongjun (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 ...
  • Large-area InP-based crystalline nanomembrane flexible photodetectors 

    Zhou, Weidong; Yang, Weiquan; Yang, Hongjun; Qin, Guoxuan; Ma, Zhenqiang; Berggren, Jesper; Hammar, Mattias; Soref, Richard (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 ...
  • Colloidal quantum dot absorption enhancement in flexible Fano filters 

    Zhou, Weidong; Chen, Li; Yang, Hongjun; Qiang, Zexuan; Pang, Huiqing; Sun, Lei (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 ...
  • Fano filters based on transferred silicon nanomembranes on plastic substrates 

    Zhou, Weidong; Ma, Zhenqiang; Qiang, Zexuan; Yang, Hongjun; Chen, Li; Pang, Huiqing (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 ...
  • Encapsulation for efficient electrical injection of photonic crystal defect mode surface-emitting lasers 

    Zhou, Weidong (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 ...
  • Surface texturing by solution deposition for omnidirectional antireflection 

    Zhou, Weidong; Tao, Meng; Yang, Hongjun; Chen, Li (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 ...
  • Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells 

    Zhou, Weidong; Wang, Yuehui; Tummala, Rajesh; Chen, L.; Guo, L. Qing; Tao, Meng (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 ...
  • Microstructured surface design for omnidirectional antireflection coatings on solar cells 

    Zhou, Weidong; Chen, Li; Yang, Hongjun; Tao, Meng (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 ...