skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive: Preprint

Abstract

The rear side metallization of Si solar cells comes with a number of inherent losses and trade-offs: a larger metallized area fraction improves fill factor at the expense of open-circuit voltage, depositing directly on textured Si leads to low contact resistivity at the expense of short-circuit current, and some metallization processes create defects in Si. To mitigate many of these losses we have developed a novel approach for rear side metallization of Si solar cells, utilizing a transparent conducting adhesive (TCA) to metallize Si without exposing the wafer to the metal deposition process. The TCA consists of an insulating adhesive loaded with conductive microspheres. This approach leads to virtually no loss in implied open-circuit voltage upon metallization. Electrical measurements showed that contact resistivities of 3-9 ..omega.. cm2 were achieved, and an analysis of the transit resistance per microsphere showed that less than 1 ..omega.. cm2 should be achievable with higher microsphere loading of the TCA.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. 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)
OSTI Identifier:
1427347
Report Number(s):
NREL/CP-5J00-68679
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2017 IEEE 44th Photovoltaic Specialists Conference (PVSC), 25-30 June 2017, Washington, D.C.
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; solar cell; metallization; adhesive; TCA; transparent conductive adhesive

Citation Formats

Schnabel, Manuel, Klein, Talysa, Lee, Benjamin G, Nemeth, William M, LaSalvia, Vincenzo A, Van Hest, Marinus F, and Stradins, Paul. Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive: Preprint. United States: N. p., 2018. Web.
Schnabel, Manuel, Klein, Talysa, Lee, Benjamin G, Nemeth, William M, LaSalvia, Vincenzo A, Van Hest, Marinus F, & Stradins, Paul. Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive: Preprint. United States.
Schnabel, Manuel, Klein, Talysa, Lee, Benjamin G, Nemeth, William M, LaSalvia, Vincenzo A, Van Hest, Marinus F, and Stradins, Paul. Wed . "Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive: Preprint". United States. https://www.osti.gov/servlets/purl/1427347.
@article{osti_1427347,
title = {Novel Rear Side Metallization Route for Si Solar Cells Using a Transparent Conducting Adhesive: Preprint},
author = {Schnabel, Manuel and Klein, Talysa and Lee, Benjamin G and Nemeth, William M and LaSalvia, Vincenzo A and Van Hest, Marinus F and Stradins, Paul},
abstractNote = {The rear side metallization of Si solar cells comes with a number of inherent losses and trade-offs: a larger metallized area fraction improves fill factor at the expense of open-circuit voltage, depositing directly on textured Si leads to low contact resistivity at the expense of short-circuit current, and some metallization processes create defects in Si. To mitigate many of these losses we have developed a novel approach for rear side metallization of Si solar cells, utilizing a transparent conducting adhesive (TCA) to metallize Si without exposing the wafer to the metal deposition process. The TCA consists of an insulating adhesive loaded with conductive microspheres. This approach leads to virtually no loss in implied open-circuit voltage upon metallization. Electrical measurements showed that contact resistivities of 3-9 ..omega.. cm2 were achieved, and an analysis of the transit resistance per microsphere showed that less than 1 ..omega.. cm2 should be achievable with higher microsphere loading of the TCA.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: