Panchromatic thin perovskite solar cells with broadband plasmonic absorption enhancement and efficient light scattering management by Au@Ag core-shell nanocuboids

Nianqing Fu, Zhi Yong Bao, Yong Liang Zhang, Guoge Zhang, Shanming Ke, Peng Lin, Jiyan Dai, Haitao Huang, Dang Yuan Lei

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

Herein, we propose an improved light harvesting and management strategy by using rationally-designed Au@Ag core-shell nanocuboids as plasmonic inclusions, aiming at achieving panchromatic thin PSCs. Compared to conventional metal nanostructures with a single narrow plasmon resonance band, the Au@Ag nanocuboids exhibit multiple broader and stronger plasmon resonances that can be tuned by adjusting structural dimensions to spectrally match the absorption band of the perovskite, particularly in its weak absorption region. By carefully tailoring the location of the Au@Ag nanocuboids in the electrodes, both plasmonic near-field enhancement and increased light-scattering effects can be fully exploited to boost up the performance of the PSCs. As a result, the hybrid devices demonstrate high photon-to-electron conversion efficiency (IPCE) over the entire visible range, with a remarkable IPCE enhancement (ΔIPCE/IPCE) of 20–60% in the range of 550–750 nm, compared with pristine devices. This also leads to an average power conversion efficiency (PCE) of 17.83% for the optimized Au@Ag incorporated cells, with a champion PCE of 18.31% recorded for the best plasmonic PSC, corresponding to a PCE enhancement of 20.8%.
Original languageEnglish
Pages (from-to)654-664
Number of pages11
JournalNano Energy
Volume41
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • Broadband light harvesting
  • Core-shell nanocuboids
  • Light management
  • Perovskite solar cells
  • Plasmonic enhancement

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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