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Title: Pathways for mitigating thermal losses in solar photovoltaics

Abstract

To improve the performance of solar photovoltaic devices one should mitigate three types of losses: optical, electrical and thermal. However, further reducing the optical and electrical losses in modern photovoltaic devices is becoming increasingly costly. Therefore, there is a rising interest in minimizing the thermal losses. These correspond to the reduction in electrical power output resultant of working at temperatures above 25 °C and the associated accelerated aging. Here, we quantify the impact of all possible strategies to mitigate thermal losses in the case of the mainstream crystalline silicon technology. Results indicate that ensuring a minimum level of conductive/convective cooling capabilities is essential. We show that sub-bandgap reflection and radiative cooling are strategies worth pursuing and recommend further field testing in real-time operating conditions. The general method we propose is suitable for every photovoltaic technology to guide the research focused on reducing thermal losses.

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. Claude Bernard Lyon, Villeurbanne (France). CNNRS, INSA-Lyon; Univ. of Utah, Salt Lake City, UT (United States). Dept. of Mechanical Engineering; Univ. Politecnica de Madrid (Spain). Inst. de Energia Solar
  2. Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Microengineering, Photovoltaics and Thin-Film Electronics Lab
  3. Portland State Univ., Portland, OR (United States). Dept. of Mechanical and Materials Engineering
  4. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Mechanical Engineering
Publication Date:
Research Org.:
Portland State Univ., Portland, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1467158
Alternate Identifier(s):
OSTI ID: 1545763
Grant/Contract Number:  
EE0008168
Resource Type:
Published Article
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

Citation Formats

Vaillon, Rodolphe, Dupré, Olivier, Cal, Raúl Bayoán, and Calaf, Marc. Pathways for mitigating thermal losses in solar photovoltaics. United States: N. p., 2018. Web. doi:10.1038/s41598-018-31257-0.
Vaillon, Rodolphe, Dupré, Olivier, Cal, Raúl Bayoán, & Calaf, Marc. Pathways for mitigating thermal losses in solar photovoltaics. United States. doi:10.1038/s41598-018-31257-0.
Vaillon, Rodolphe, Dupré, Olivier, Cal, Raúl Bayoán, and Calaf, Marc. Mon . "Pathways for mitigating thermal losses in solar photovoltaics". United States. doi:10.1038/s41598-018-31257-0.
@article{osti_1467158,
title = {Pathways for mitigating thermal losses in solar photovoltaics},
author = {Vaillon, Rodolphe and Dupré, Olivier and Cal, Raúl Bayoán and Calaf, Marc},
abstractNote = {To improve the performance of solar photovoltaic devices one should mitigate three types of losses: optical, electrical and thermal. However, further reducing the optical and electrical losses in modern photovoltaic devices is becoming increasingly costly. Therefore, there is a rising interest in minimizing the thermal losses. These correspond to the reduction in electrical power output resultant of working at temperatures above 25 °C and the associated accelerated aging. Here, we quantify the impact of all possible strategies to mitigate thermal losses in the case of the mainstream crystalline silicon technology. Results indicate that ensuring a minimum level of conductive/convective cooling capabilities is essential. We show that sub-bandgap reflection and radiative cooling are strategies worth pursuing and recommend further field testing in real-time operating conditions. The general method we propose is suitable for every photovoltaic technology to guide the research focused on reducing thermal losses.},
doi = {10.1038/s41598-018-31257-0},
journal = {Scientific Reports},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1038/s41598-018-31257-0

Citation Metrics:
Cited by: 3 works
Citation information provided by
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Works referenced in this record:

Radiative cooling to low temperatures: General considerations and application to selectively emitting SiO films
journal, June 1981

  • Granqvist, C. G.; Hjortsberg, A.
  • Journal of Applied Physics, Vol. 52, Issue 6, p. 4205-4220
  • DOI: 10.1063/1.329270