Accession Number : AD1045887


Title :   Electrodeposition of Metal Matrix Composites and Materials Characterization for Thin-Film Solar Cells


Descriptive Note : Technical Report,04 Aug 2014,04 Nov 2017


Corporate Author : University of New Mexico Albuquerque United States


Personal Author(s) : Han,Sang M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1045887.pdf


Report Date : 04 Dec 2017


Pagination or Media Count : 30


Abstract : We have demonstrated that metal matrix composites, which consist of silver-multi-walled carbon nanotube-silver, layer-by-layer stack, can electrically bridge the cracks (40 m) that appear in the semiconductor substrates and the composite grid lines. This gap bridging was proven to be repeatable through strained-to-failure/closed-gap repeat cycles. For device demonstration, the composites were integrated onto commercial triple-junction cells, and the composite-enhanced cells showed strong crack-tolerance, maintaining 95% of the short circuit current upon substrate fracture. By contrast, the conventional metallization led to 50%loss in short circuit current. The composite metallization was also superior in minimizing the overall efficiency loss against fracture, compared to the conventional metallization. During the project extension period, we have initiated composite materials modeling and circuit modeling to establish microstructure-mechanical/electrical property relationship.


Descriptors :   METAL MATRIX COMPOSITES , carbon nanotubes , SILVER , PHOTOVOLTAIC EFFECT , Solar Cells , THIN FILMS , circuits , electrical properties , mechanical properties , ELECTRODEPOSITION


Subject Categories : Laminates and Composite Materials
      Electric Power Production and Distribution


Distribution Statement : APPROVED FOR PUBLIC RELEASE