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Title: Development of Low-Cost, Crack-Tolerant Metallization Using Screen Printing

Abstract

One of the ways to reduce the cost of solar electricity to 3/kWh, thus reaching parity with fossil-fuel-based generation, is to reduce the degradation rate of solar modules and extend their lifetime well beyond 30 years. The extended module lifetime in turn can positively influence the financial model and the bankability of utility-scale PV projects. Today, the highest-riskpriority solar module degradation mechanism is what is known as hot spots, often induced by cell cracks. In order to address this degradation mechanism, we make use of low-cost, multi-walled carbon nanotubes embedded in commercial screen-printable silver pastes. When the carbon nanotubes are properly functionalized and appropriately incorporated into commercial silver pastes, the resulting metal contacts on solar cells, after screen-printing and firing, show exceptional fracture toughness. These composite metal contacts possess increased ductility, electrical gap-bridging capability up to 50 um, and 'self-healing' to regain electrical continuity even after cycles of complete electrical failure under extreme strain.

Authors:
 [1];  [2];  [1];  [2];  [3];  [3];  [3];  [3];  [4];  [4]
  1. Osazda Energy, LLC
  2. Osazda Energy, LLC; University of New Mexico
  3. Georgia Institute of Technology
  4. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S), Durable Modules Consortium (DuraMAT)
OSTI Identifier:
1603908
Report Number(s):
NREL/CP-5K00-76280
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 16-21 June 2019, Chicago, Illinois
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING; cracks; ductility; fracture toughness; multi-wall carbon nanotubes; printing; silver; solar cells

Citation Formats

Abudayyeh, Omar K., Chavez, Andre, Chavez, John, Han, Sang M., Zimbardi, Francesco, Rounsaville, Brian, Upadhyaya, Vijay, Rohatgi, Ajeet, McDanold, Byron, and Silverman, Timothy J. Development of Low-Cost, Crack-Tolerant Metallization Using Screen Printing. United States: N. p., 2020. Web. doi:10.1109/PVSC40753.2019.8980800.
Abudayyeh, Omar K., Chavez, Andre, Chavez, John, Han, Sang M., Zimbardi, Francesco, Rounsaville, Brian, Upadhyaya, Vijay, Rohatgi, Ajeet, McDanold, Byron, & Silverman, Timothy J. Development of Low-Cost, Crack-Tolerant Metallization Using Screen Printing. United States. https://doi.org/10.1109/PVSC40753.2019.8980800
Abudayyeh, Omar K., Chavez, Andre, Chavez, John, Han, Sang M., Zimbardi, Francesco, Rounsaville, Brian, Upadhyaya, Vijay, Rohatgi, Ajeet, McDanold, Byron, and Silverman, Timothy J. Thu . "Development of Low-Cost, Crack-Tolerant Metallization Using Screen Printing". United States. https://doi.org/10.1109/PVSC40753.2019.8980800.
@article{osti_1603908,
title = {Development of Low-Cost, Crack-Tolerant Metallization Using Screen Printing},
author = {Abudayyeh, Omar K. and Chavez, Andre and Chavez, John and Han, Sang M. and Zimbardi, Francesco and Rounsaville, Brian and Upadhyaya, Vijay and Rohatgi, Ajeet and McDanold, Byron and Silverman, Timothy J},
abstractNote = {One of the ways to reduce the cost of solar electricity to 3/kWh, thus reaching parity with fossil-fuel-based generation, is to reduce the degradation rate of solar modules and extend their lifetime well beyond 30 years. The extended module lifetime in turn can positively influence the financial model and the bankability of utility-scale PV projects. Today, the highest-riskpriority solar module degradation mechanism is what is known as hot spots, often induced by cell cracks. In order to address this degradation mechanism, we make use of low-cost, multi-walled carbon nanotubes embedded in commercial screen-printable silver pastes. When the carbon nanotubes are properly functionalized and appropriately incorporated into commercial silver pastes, the resulting metal contacts on solar cells, after screen-printing and firing, show exceptional fracture toughness. These composite metal contacts possess increased ductility, electrical gap-bridging capability up to 50 um, and 'self-healing' to regain electrical continuity even after cycles of complete electrical failure under extreme strain.},
doi = {10.1109/PVSC40753.2019.8980800},
url = {https://www.osti.gov/biblio/1603908}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {2}
}

Conference:
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