Accession Number : ADA615168


Title :   Photovoltaic fabrics


Descriptive Note : Final rept. Feb 2013-Oct 2014


Corporate Author : MASSACHUSETTS UNIV DARTMOUTH


Personal Author(s) : Calvert, Paul ; Gaudiana, Russ ; Kim, Yong ; Childress, Richard ; Lee, Michael ; Mayer, Joseph ; Li, Dapeng


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a615168.pdf


Report Date : 22 Apr 2015


Pagination or Media Count : 50


Abstract : This report describes a project to improve photovoltaic fabrics. It had four objectives: 1) Efficiency - make PV wires on a continuous basis that exhibit 7% efficiency; 2) Automated Welding - demonstrate an automated means of interconnecting the electrodes of one wire to the electrodes of a neighboring wire; 3) Weaving - fabric to determine the optimum wire density, relative to the co-woven inert yarn, for power production, flexibility, and wearability; 4) Battery Charging - produce fabrics that are able to charge 4AA batteries within 4 hours of exposure to direct sunlight (AM1.5). Over the duration of the project we demonstrated PV efficiency ranging from 5.04% (wire on a black background) to 8% efficiency on a white cloth background. A bare primary electrode on a nano-silver coating exhibited an efficiency of 6.45%. This high level of performance was accomplished by means of high performance active layer polymers, stainless steel electrodes with lower resistivity, optimized coating formulations for all layers, a new cladding formulation, and process optimization. We supplied several thousand feet of high performance PV wire for weaving trials and fabric delivery.


Descriptors :   *BATTERY CHARGERS , *EFFICIENCY , *FABRICS , *PHOTOELECTRIC CELLS(SEMICONDUCTOR) , *WEAVING , *WELDING , AUTOMATION , CLADDING , DENSITY , ELECTRODES , ENERGY , FIBERS , FLEXIBLE MATERIALS , LAYERS , PLASMONS , POLYESTER FIBERS , SOLAR CELLS


Subject Categories : Electrooptical and Optoelectronic Devices
      Electrochemical Energy Storage
      Textiles
      Fabrication Metallurgy
      Mfg & Industrial Eng & Control of Product Sys


Distribution Statement : APPROVED FOR PUBLIC RELEASE