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Title: Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint

Abstract

We study the effects of Cu composition on the CdTe/ZnTe:Cu back contact and the bulk CdTe. For the back contact, its potential barrier decreases with Cu concentration while its saturation current density increases. For the bulk CdTe, the hole density increases with Cu concentration. We identify a Cu-related deep level at0.55 eV whose concentration is significant when the Cu concentration ishigh. The device performance, which initially increases with Cu concentration then decreases, reflects the interplay between the positive influences and negative influences (increasing deep levels in CdTe) of Cu.

Authors:
; ; ; ; ; ;
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:
1047930
Report Number(s):
NREL/CP-5200-54125
TRN: US201216%%562
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2012 IEEE Photovoltaic Specialists Conference, 3-8 June 2012, Austin, Texas
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; CURRENT DENSITY; PERFORMANCE; POTENTIALS; SATURATION; SOLAR CELLS; THIN FILMS; admittance measurement; capacitance voltage (CV); CdTe; charge carrier density; contacts; defects

Citation Formats

Li, Jian V., Duenow, Joel N., Kuciauskas, Darius, Kanevce, Ana, Dhere, Ramesh G., Young, Matthew R., and Levi, Dean H. Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint. United States: N. p., 2012. Web.
Li, Jian V., Duenow, Joel N., Kuciauskas, Darius, Kanevce, Ana, Dhere, Ramesh G., Young, Matthew R., & Levi, Dean H. Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint. United States.
Li, Jian V., Duenow, Joel N., Kuciauskas, Darius, Kanevce, Ana, Dhere, Ramesh G., Young, Matthew R., and Levi, Dean H. Sun . "Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint". United States. https://www.osti.gov/servlets/purl/1047930.
@article{osti_1047930,
title = {Electrical Characterization of Cu Composition Effects in CdS/CdTe Thin-Film Solar Cells with a ZnTe:Cu Back Contact: Preprint},
author = {Li, Jian V. and Duenow, Joel N. and Kuciauskas, Darius and Kanevce, Ana and Dhere, Ramesh G. and Young, Matthew R. and Levi, Dean H.},
abstractNote = {We study the effects of Cu composition on the CdTe/ZnTe:Cu back contact and the bulk CdTe. For the back contact, its potential barrier decreases with Cu concentration while its saturation current density increases. For the bulk CdTe, the hole density increases with Cu concentration. We identify a Cu-related deep level at0.55 eV whose concentration is significant when the Cu concentration ishigh. The device performance, which initially increases with Cu concentration then decreases, reflects the interplay between the positive influences and negative influences (increasing deep levels in CdTe) of Cu.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {7}
}

Conference:
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