Vertical Cavity Surface Emitting LED/Laser Based on Er- Doped Porous Poly-Si on Glass Substrates

Information

  • NSF Award
  • 9461668
Owner
  • Award Id
    9461668
  • Award Effective Date
    2/1/1995 - 29 years ago
  • Award Expiration Date
    11/30/1995 - 29 years ago
  • Award Amount
    $ 64,920.00
  • Award Instrument
    Standard Grant

Vertical Cavity Surface Emitting LED/Laser Based on Er- Doped Porous Poly-Si on Glass Substrates

This project will fabricate a vertical cavity surface-emitting LED/laser by implanting Er into porous silicon (produced from poly-porous silicon on glass). Spire was the first to demonstrate: (a) porous polysilicon with quantum-confined properties and (b) strong, room-temperature IR emission from Er-doped porous Si. Their results clearly indicate that optical emission efficiency of Er in porous silicon at room temperature is comparable to In0.53Ga0.47As material, used for commercial infrared LEDs. Strong temperature dependence of IR intensity for Er-implanted bulk Si is a major obstacle preventing the application of Si:Er in optoelectronics. Results show about a 50% decrease in IR intensity for porous Si when the temperature is raised from 77K to room temperature, as compared to a decrease of a factor of 1000 for Er in bulk Si. In Phase I, they will deposit a transparent conductor (such as ITO) onto a glass substrate, followed by polysilicon. After processing to fabricate porous polysilicon with quantum-confined properties, samples will be implanted with erbium and annealed to recrystallize the silicon nanostructures. Finally, they will deposit a thin metal film mirror/contact, to complete a porous polycrystalline silicon-based infrared Schottky LED. Phase II will concentrate on optimization and commercialization of the devices, and on formation of optical cavities to produce IR lasers.

  • Program Officer
    Ritchie B. Coryell
  • Min Amd Letter Date
    1/30/1995 - 29 years ago
  • Max Amd Letter Date
    1/30/1995 - 29 years ago
  • ARRA Amount

Institutions

  • Name
    Spire Corporation
  • City
    BEDFORD
  • State
    MA
  • Country
    United States
  • Address
    1 PATRIOTS PARK
  • Postal Code
    017302396
  • Phone Number
    7812756000

Investigators

  • First Name
    Fereydoon
  • Last Name
    Namavar
  • Email Address
    fnamavar@unmc.edu
  • Start Date
    1/30/1995 12:00:00 AM

FOA Information

  • Name
    Engineering-Electrical
  • Code
    55