Tandem solar cells with infrared-tuned silicon bottom cells

Zhengshan Yu, Mehdi Leilaeioun, Kathryn Fisher, Mathieu Boccard, Zachary Holman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We modify silicon heterojunction solar cells for the near-infrared (NIR) spectrum and reduced generation rate that they experience in tandems, with a focus on the front transparent conductive oxide layer and rear reflector. These cells are then incorporated into both two-terminal and four-terminal tandems, including a new, optically coupled tandem architecture that utilizes a silicon "PVMirror". A PVMirror is a curved PV module that may include a spectrum-splitting film or coating on the sunward side of the cells. Near-infrared light is transmitted to the silicon cells, whereas visible (and potentially infrared) light is reflected and focused-thanks to the curvature of the PVMirror-onto a second, complementary solar converter. Though there are many potential embodiments of the PVMirror technology, this talk presents initial results for a parabolic trough PVMirror incorporating silicon "bottom" cells with a GaAs receiver at its focus. Our best NIRtuned silicon cells reach a peak spectral efficiency of 42% at 900 nm, and PVMirrors with these cells coupled with GaAs receivers demonstrate outdoor efficiencies of over 24% with respect to the global irradiance and over 28% with respect to the direct normal irradiance.

Original languageEnglish (US)
Title of host publicationOptical Nanostructures and Advanced Materials for Photovoltaics, PV 2016
PublisherOSA - The Optical Society
ISBN (Print)9780960038046
DOIs
StatePublished - Jul 21 2014
EventOptical Nanostructures and Advanced Materials for Photovoltaics, PV 2016 - Leipzig, Germany
Duration: Nov 14 2016Nov 17 2016

Other

OtherOptical Nanostructures and Advanced Materials for Photovoltaics, PV 2016
CountryGermany
CityLeipzig
Period11/14/1611/17/16

Fingerprint

Silicon
Solar cells
Infrared radiation
Oxides
Heterojunctions
Coatings
gallium arsenide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

Cite this

Yu, Z., Leilaeioun, M., Fisher, K., Boccard, M., & Holman, Z. (2014). Tandem solar cells with infrared-tuned silicon bottom cells. In Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016 OSA - The Optical Society. https://doi.org/10.1364/PV.2016.PW2B.1

Tandem solar cells with infrared-tuned silicon bottom cells. / Yu, Zhengshan; Leilaeioun, Mehdi; Fisher, Kathryn; Boccard, Mathieu; Holman, Zachary.

Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016. OSA - The Optical Society, 2014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yu, Z, Leilaeioun, M, Fisher, K, Boccard, M & Holman, Z 2014, Tandem solar cells with infrared-tuned silicon bottom cells. in Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016. OSA - The Optical Society, Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016, Leipzig, Germany, 11/14/16. https://doi.org/10.1364/PV.2016.PW2B.1
Yu Z, Leilaeioun M, Fisher K, Boccard M, Holman Z. Tandem solar cells with infrared-tuned silicon bottom cells. In Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016. OSA - The Optical Society. 2014 https://doi.org/10.1364/PV.2016.PW2B.1
Yu, Zhengshan ; Leilaeioun, Mehdi ; Fisher, Kathryn ; Boccard, Mathieu ; Holman, Zachary. / Tandem solar cells with infrared-tuned silicon bottom cells. Optical Nanostructures and Advanced Materials for Photovoltaics, PV 2016. OSA - The Optical Society, 2014.
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