Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells

Sachit Grover; Jian V. Li

doi:10.1109/PVSC.2015.7356039

Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells

Sachit Grover
, Jian V. Li

Department of Aeronautics and Astronautics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

Performance of solar cells and modules at operating temperature relative to standard test conditions is primarily determined by the temperature dependence of VOC. Usually this dependence is analyzed by applying a simplistic semi-analytical equation to experimental data without complete understanding of the underlying mechanisms that affect the temperature coefficient dVOC/dT (VOC'). Unanswered questions related to the temperature dependence include: separating the contribution of interface vs. absorber recombination towards VOC', temperature coefficient comparison of homojunction vs. heterojunction silicon solar cells, and dependence of VOC' on inversion strength in heterojunction cells. We derive an analytical equation that provides the explicit dependence of VOC' on the material parameters and the strength of recombination. The role of recombination in different regions of the cell is exemplified by comparing two CuInGaSe devices with different bandgaps.

Original language	English
Title of host publication	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479979448
DOIs	https://doi.org/10.1109/PVSC.2015.7356039
Publication status	Published - 2015 Dec 14
Event	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States Duration: 2015 Jun 14 → 2015 Jun 19

Publication series

Name	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

Other

Other	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
Country/Territory	United States
City	New Orleans
Period	15-06-14 → 15-06-19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

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10.1109/PVSC.2015.7356039

Cite this

Grover, S., & Li, J. V. (2015). Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells. In 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 Article 7356039 (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2015.7356039

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abstract = "Performance of solar cells and modules at operating temperature relative to standard test conditions is primarily determined by the temperature dependence of VOC. Usually this dependence is analyzed by applying a simplistic semi-analytical equation to experimental data without complete understanding of the underlying mechanisms that affect the temperature coefficient dVOC/dT (VOC'). Unanswered questions related to the temperature dependence include: separating the contribution of interface vs. absorber recombination towards VOC', temperature coefficient comparison of homojunction vs. heterojunction silicon solar cells, and dependence of VOC' on inversion strength in heterojunction cells. We derive an analytical equation that provides the explicit dependence of VOC' on the material parameters and the strength of recombination. The role of recombination in different regions of the cell is exemplified by comparing two CuInGaSe devices with different bandgaps.",

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Grover, S & Li, JV 2015, Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells. in 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015., 7356039, 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015, Institute of Electrical and Electronics Engineers Inc., 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015, New Orleans, United States, 15-06-14. https://doi.org/10.1109/PVSC.2015.7356039

Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells. / Grover, Sachit; Li, Jian V.
2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7356039 (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells

AU - Grover, Sachit

AU - Li, Jian V.

PY - 2015/12/14

Y1 - 2015/12/14

N2 - Performance of solar cells and modules at operating temperature relative to standard test conditions is primarily determined by the temperature dependence of VOC. Usually this dependence is analyzed by applying a simplistic semi-analytical equation to experimental data without complete understanding of the underlying mechanisms that affect the temperature coefficient dVOC/dT (VOC'). Unanswered questions related to the temperature dependence include: separating the contribution of interface vs. absorber recombination towards VOC', temperature coefficient comparison of homojunction vs. heterojunction silicon solar cells, and dependence of VOC' on inversion strength in heterojunction cells. We derive an analytical equation that provides the explicit dependence of VOC' on the material parameters and the strength of recombination. The role of recombination in different regions of the cell is exemplified by comparing two CuInGaSe devices with different bandgaps.

AB - Performance of solar cells and modules at operating temperature relative to standard test conditions is primarily determined by the temperature dependence of VOC. Usually this dependence is analyzed by applying a simplistic semi-analytical equation to experimental data without complete understanding of the underlying mechanisms that affect the temperature coefficient dVOC/dT (VOC'). Unanswered questions related to the temperature dependence include: separating the contribution of interface vs. absorber recombination towards VOC', temperature coefficient comparison of homojunction vs. heterojunction silicon solar cells, and dependence of VOC' on inversion strength in heterojunction cells. We derive an analytical equation that provides the explicit dependence of VOC' on the material parameters and the strength of recombination. The role of recombination in different regions of the cell is exemplified by comparing two CuInGaSe devices with different bandgaps.

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M3 - Conference contribution

AN - SCOPUS:84961644317

T3 - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

BT - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015

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ER -

Theory and analysis of temperature coefficient of open-circuit voltage (dVOC/dT) in heterojunction solar cells

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