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Title: Analysis of Back-Contact Interface Recombination in Thin-Film Solar Cells

Abstract

The open-circuit voltage (VOC) in a generic TCO/buffer/absorber/back-contact thin-film solar cell device is a key parameter in the recombination analysis. In particular, VOC is sensitively influenced by the interface recombination at the buffer/absorber front interface and at the absorber/back-contact interface. This paper reports the temperature, excitation light intensity, and wavelength-dependent open-circuit voltage analysis to separate and quantify recombination rates in solar cells at the front and back interfaces, in the depletion regions, and in the quasi-neutral region. The wavelength-dependent VOC analysis is exploited to extract the absorber/back-contact recombination coefficient. The experimentally observed results are verified using SCAPS-1D (one dimensional-a solar cell capacitance simulator) simulation.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [3];  [4];  [5];  [3];  [2];  [2]; ORCiD logo [6]
  1. Texas State Univ., San Marcos, TX (United States)
  2. First Solar, Inc., Perrysburg, OH (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Ascent Solar Technologies, Inc., Thornton, CO (United States)
  5. Stion Corp., San Jose, CA (United States)
  6. National Cheng Kung Univ., Tainan City (Taiwan)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1462336
Report Number(s):
NREL/JA-5K00-72052
Journal ID: ISSN 2156-3381
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Journal of Photovoltaics
Additional Journal Information:
Journal Volume: 8; Journal Issue: 3; Journal ID: ISSN 2156-3381
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; back-contact; interface; open-circuit voltage; photovoltaics; recombination; SCAPS-1D

Citation Formats

Paul, Sanjoy, Grover, Sachit, Repins, Ingrid L., Keyes, Brian M., Contreras, Miguel A., Ramanathan, Kannan, Noufi, Rommel, Zhao, Zhibo, Liao, Feng, and Li, Jian V. Analysis of Back-Contact Interface Recombination in Thin-Film Solar Cells. United States: N. p., 2018. Web. doi:10.1109/JPHOTOV.2018.2819664.
Paul, Sanjoy, Grover, Sachit, Repins, Ingrid L., Keyes, Brian M., Contreras, Miguel A., Ramanathan, Kannan, Noufi, Rommel, Zhao, Zhibo, Liao, Feng, & Li, Jian V. Analysis of Back-Contact Interface Recombination in Thin-Film Solar Cells. United States. doi:10.1109/JPHOTOV.2018.2819664.
Paul, Sanjoy, Grover, Sachit, Repins, Ingrid L., Keyes, Brian M., Contreras, Miguel A., Ramanathan, Kannan, Noufi, Rommel, Zhao, Zhibo, Liao, Feng, and Li, Jian V. Thu . "Analysis of Back-Contact Interface Recombination in Thin-Film Solar Cells". United States. doi:10.1109/JPHOTOV.2018.2819664. https://www.osti.gov/servlets/purl/1462336.
@article{osti_1462336,
title = {Analysis of Back-Contact Interface Recombination in Thin-Film Solar Cells},
author = {Paul, Sanjoy and Grover, Sachit and Repins, Ingrid L. and Keyes, Brian M. and Contreras, Miguel A. and Ramanathan, Kannan and Noufi, Rommel and Zhao, Zhibo and Liao, Feng and Li, Jian V.},
abstractNote = {The open-circuit voltage (VOC) in a generic TCO/buffer/absorber/back-contact thin-film solar cell device is a key parameter in the recombination analysis. In particular, VOC is sensitively influenced by the interface recombination at the buffer/absorber front interface and at the absorber/back-contact interface. This paper reports the temperature, excitation light intensity, and wavelength-dependent open-circuit voltage analysis to separate and quantify recombination rates in solar cells at the front and back interfaces, in the depletion regions, and in the quasi-neutral region. The wavelength-dependent VOC analysis is exploited to extract the absorber/back-contact recombination coefficient. The experimentally observed results are verified using SCAPS-1D (one dimensional-a solar cell capacitance simulator) simulation.},
doi = {10.1109/JPHOTOV.2018.2819664},
journal = {IEEE Journal of Photovoltaics},
number = 3,
volume = 8,
place = {United States},
year = {2018},
month = {4}
}

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