Plasmonically Enhanced Spectral Upconversion for Improved Performance of GaAs Solar Cells under Nonconcentrated Solar Illumination

Huandong Chen, Sung Min Lee, Angelo Montenegro, Dongseok Kang, Boju Gai, Haneol Lim, Chayan Dutta, Wanting He, Minjoo Larry Lee, Alexander Benderskii, Jongseung Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

Spectral upconversion has the potential to compensate for sub-bandgap transparency of single-junction solar cells. Here a composite module of GaAs solar cells is presented that can improve their one-Sun photovoltaic performance by capturing long-wavelength photons below the bandgap via plasmonically enhanced spectral upconversion. Ultrathin, microscale GaAs solar cells released from the growth wafer and etched with a bottom contact layer are printed on a polymeric waveguide containing NaYF4:Er3+, Yb3+ upconversion nanocrystals (UCNC), coated on a plasmonic reflector composed of hole-post hybrid silver nanostructure. The photovoltaic efficiency of GaAs microcells on a UCNC-incorporated plasmonic substrate is increased by ∼6.4% (relative) and ∼11.8% (relative), respectively, compared to those on a nanostructured silver reflector without UCNC and on a plain silver reflector with UCNC, owing to the combined effects of local electric-field amplification to enhance the absorption of UCNC, augmented upconverted emission via coupling into radiative modes, as well as waveguided photon concentration.

Original languageEnglish (US)
Pages (from-to)4289-4295
Number of pages7
JournalACS Photonics
Volume5
Issue number11
DOIs
StatePublished - Nov 21 2018

Keywords

  • GaAs solar cell
  • III-V solar cells
  • nanomembrane
  • spectral upconversion
  • surface plasmon resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Plasmonically Enhanced Spectral Upconversion for Improved Performance of GaAs Solar Cells under Nonconcentrated Solar Illumination'. Together they form a unique fingerprint.

Cite this