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  • 1
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    Novel Passivating/Antireflective Coatings for Space Solar Cells (2005)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: We are developing a novel process to grow passivating/antireflective (AR) coatings for terrestrial and space solar cells. Our approach involves a Room Temperature Wet Chemical Growth (RTWCG) process, which was pioneered, and is under development at SPECMAT, Inc., under a Reimbursable Space Act Agreement with NASA Glenn Research Center. The RTWCG passivating/AR coatings with graded index of refraction are applied in one easy step on finished (bare) cells. The RTWCG coatings grown on planar, textured and porous Si, as well as on poly-Si, CuInSe2, and III-V substrates, show excellent uniformity irrespective of surface topography, crystal orientation, size and shape. In this paper we present some preliminary results of the RTWCG coatings on Si and III-V substrates that show very good potential for use as a passivation/AR coating for space solar cell applications. Compared to coatings grown using conventional techniques, the RTWCG coatings have the potential to reduce reflection losses and improve current collection near the illuminated surface of space solar cells, while reducing the fabrication costs.
    Keywords: Solid-State Physics
    Type: 16th Space Photovoltaic Research and Technology Conference; 220-229; NASA/CP-2001-210747/REV1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Electrical Characterization of Defects in SiC Schottky Barriers (2005)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: We have been investigating the effect of screw dislocation and other structural defects on the electrical properties of SiC. SiC is a wide-bandgap semiconductor that is currently received much attention due to its favorable high temperature behavior and high electric field breakdown strength. Unfortunately, the current state-of-the-art crystal growth and device processing methods produce material with high defect densities, resulting in a limited commercial viability
    Keywords: Solid-State Physics
    Type: 16th Space Photovoltaic Research and Technology Conference; 183-188; NASA/CP-2001-210747/REV1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Advanced Solar Cell Testing and Characterization (2005)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: The topic for this workshop stems from an ongoing effort by the photovoltaic community and U.S. government to address issues and recent problems associated with solar cells and arrays experienced by a number of different space systems. In April 2003, a workshop session was held at the Aerospace Space Power Workshop to discuss an effort by the Air Force to update and standardize solar cell and array qualification test procedures in an effort to ameliorate some of these problems. The organizers of that workshop session thought it was important to continue these discussions and present this information to the entire photovoltaic community. Thus, it was decided to include this topic as a workshop at the following SPRAT conference.
    Keywords: Solid-State Physics
    Type: 18th Space Photovoltaic Research and Technology Conference; 299-302; NASA/CP-2005-213431
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Liquid-Phase Deposition of Single-Phase Alpha-Copper-Indium-Diselenide (2005)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: The success of exploratory missions in outer space often depends on a highly efficient renewable energy supply, as provided by solar cells. Figure 1 shows a well-known example: The robotic vehicle "Rover," constructed for NASA s "Mars Pathfinder" mission. The solar cells for such applications not only need to have high conversion efficiency, but must possess a high specific power, thus a high power output per unit mass. Since future missions will demand for large aggregates of solar cells and space flights are expensive, the solar cells must furthermore be available at low costs (per unit power output) and - very important in outer space - have a long lifetime and a high resistance against structural damage introduced by irradiation with high-energy electrons and protons.
    Keywords: Solid-State Physics
    Type: 18th Space Photovoltaic Research and Technology Conference; 273-284; NASA/CP-2005-213431
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    16th Space Photovoltaic Research and Technology Conference (2005)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The purpose of the SPRAT conference is to bring members of the space solar cell community together in a relatively informal conference setting to discuss the recent developments in solar cell technology and to discuss the future directions of the field. The conference is sponsored by the Photovoltaic and Space Environmental Effects Branch at the NASA Glenn Research Center.
    Keywords: Solid-State Physics
    Type: NASA/CP-2001-210747/REV1 , E-12676-1/REV1 , 16th Space Photovoltaic Research and Technology Conference; Aug 31, 1999 - Sep 02, 1999; Brook Park, OH; United States
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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