Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules

Ian M. Slauch; Michael G. Deceglie; Timothy J. Silverman; Vivian E. Ferry

doi:10.1117/12.2323145

Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules

Ian M. Slauch, Michael G. Deceglie, Timothy J. Silverman, Vivian E. Ferry

Chemical Engineering and Materials Science

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

6 Scopus citations

Abstract

The efficiency of a crystalline silicon solar module decreases as its operating temperature rises. Module cooling is possible via selective reflection of sub-bandgap photons so that they are not parasitically absorbed. Selecting from a library of common dielectrics, we numerically optimize the design of two-layer mirrors at the outer glass surface of a crystalline Si solar cell module. The mirrors are designed to maximize the annual energy yield of a module by both reflecting light below the bandgap and enhancing the transmission of light above the bandgap. Combined ray-tracing and finite element simulations determine the power output and temperature of the module over time. Since any two-layer mirror would replace a conventional single-layer glass anti-reflection coating on the module glass, we study the ability of a two-layer structure to improve on a single-layer coating. The best two-layer designs improve the annual energy yield over a module with a glass anti-reflection coating and reduce the module operating temperature.

Original language	English (US)
Title of host publication	New Concepts in Solar and Thermal Radiation Conversion and Reliability
Editors	Jeremy N. Munday, Michael D. Kempe, Peter Bermel
Publisher	SPIE
ISBN (Electronic)	9781510620896
DOIs	https://doi.org/10.1117/12.2323145
State	Published - 2018
Event	New Concepts in Solar and Thermal Radiation Conversion and Reliability 2018 - San Diego, United States Duration: Aug 19 2018 → Aug 21 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10759
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	New Concepts in Solar and Thermal Radiation Conversion and Reliability 2018
Country/Territory	United States
City	San Diego
Period	8/19/18 → 8/21/18

Bibliographical note

Funding Information:
This work was authored in part by Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) Agreement Number 30312. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes.

Publisher Copyright:
© 2018 SPIE.

Keywords

Anti-reflection
Cooling
Photonic structures
Selective reflection
Solar cells
Solar modules
Solar thermal management

Publisher link

10.1117/12.2323145

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Slauch, I. M., Deceglie, M. G., Silverman, T. J., & Ferry, V. E. (2018). Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules. In J. N. Munday, M. D. Kempe, & P. Bermel (Eds.), New Concepts in Solar and Thermal Radiation Conversion and Reliability Article 1075911 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10759). SPIE. https://doi.org/10.1117/12.2323145

Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules. / Slauch, Ian M.; Deceglie, Michael G.; Silverman, Timothy J. et al.
New Concepts in Solar and Thermal Radiation Conversion and Reliability. ed. / Jeremy N. Munday; Michael D. Kempe; Peter Bermel. SPIE, 2018. 1075911 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10759).

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

Slauch, IM, Deceglie, MG, Silverman, TJ & Ferry, VE 2018, Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules. in JN Munday, MD Kempe & P Bermel (eds), New Concepts in Solar and Thermal Radiation Conversion and Reliability., 1075911, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10759, SPIE, New Concepts in Solar and Thermal Radiation Conversion and Reliability 2018, San Diego, United States, 8/19/18. https://doi.org/10.1117/12.2323145

Slauch IM, Deceglie MG, Silverman TJ, Ferry VE. Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules. In Munday JN, Kempe MD, Bermel P, editors, New Concepts in Solar and Thermal Radiation Conversion and Reliability. SPIE. 2018. 1075911. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2323145

Slauch, Ian M. ; Deceglie, Michael G. ; Silverman, Timothy J. et al. / Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules. New Concepts in Solar and Thermal Radiation Conversion and Reliability. editor / Jeremy N. Munday ; Michael D. Kempe ; Peter Bermel. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules",

abstract = "The efficiency of a crystalline silicon solar module decreases as its operating temperature rises. Module cooling is possible via selective reflection of sub-bandgap photons so that they are not parasitically absorbed. Selecting from a library of common dielectrics, we numerically optimize the design of two-layer mirrors at the outer glass surface of a crystalline Si solar cell module. The mirrors are designed to maximize the annual energy yield of a module by both reflecting light below the bandgap and enhancing the transmission of light above the bandgap. Combined ray-tracing and finite element simulations determine the power output and temperature of the module over time. Since any two-layer mirror would replace a conventional single-layer glass anti-reflection coating on the module glass, we study the ability of a two-layer structure to improve on a single-layer coating. The best two-layer designs improve the annual energy yield over a module with a glass anti-reflection coating and reduce the module operating temperature.",

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note = "Funding Information: This work was authored in part by Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy{\textquoteright}s Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) Agreement Number 30312. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes. Publisher Copyright: {\textcopyright} 2018 SPIE.; New Concepts in Solar and Thermal Radiation Conversion and Reliability 2018 ; Conference date: 19-08-2018 Through 21-08-2018",

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AB - The efficiency of a crystalline silicon solar module decreases as its operating temperature rises. Module cooling is possible via selective reflection of sub-bandgap photons so that they are not parasitically absorbed. Selecting from a library of common dielectrics, we numerically optimize the design of two-layer mirrors at the outer glass surface of a crystalline Si solar cell module. The mirrors are designed to maximize the annual energy yield of a module by both reflecting light below the bandgap and enhancing the transmission of light above the bandgap. Combined ray-tracing and finite element simulations determine the power output and temperature of the module over time. Since any two-layer mirror would replace a conventional single-layer glass anti-reflection coating on the module glass, we study the ability of a two-layer structure to improve on a single-layer coating. The best two-layer designs improve the annual energy yield over a module with a glass anti-reflection coating and reduce the module operating temperature.

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Two-layer anti-reflection coatings with optimized sub-bandgap reflection for solar modules

Abstract

Publication series

Conference

Bibliographical note

Keywords

Publisher link

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