Jump to main content
Jump to site search


Multifunctional bipyramid-Au@ZnO core–shell nanoparticles as a cathode buffer layer for efficient non-fullerene inverted polymer solar cells with improved near-infrared photoresponse

Author affiliations

Abstract

How to enhance the light absorption of the photoactive layer with a limited thickness is still a big challenge. To take advantage of the plasmonic effects of sharp-edged metal nanoparticles and the excellent electron collection ability of ZnO in polymer solar cells (PSCs), we designed and synthesized multifunctional bipyramid-Au@ZnO core–shell nanoparticles (Au@ZnO). These materials were integrated into inverted non-fullerene PSCs with a limited photoactive layer thickness. We conducted electron mobility, dissociation probability, and time-resolved photoluminescence testing. Our results were supported by the theoretical prediction that the Au@ZnO is capable of boosting the near-infrared photo-response and effectively extracting the electrons from the photoactive layer. These features markedly improved carrier transport and enabled fast charge transfer to the electrode. Promising power conversion efficiency (PCE) values of 10.88% and 13.67% were achieved for the PBDTBDD:ITIC and PBDB-TF:IT-4F-based PSCs with a Au@ZnO cathode buffer layer (CBL). This performance was superior to that of reference devices without a Au@ZnO CBL, which showed PCEs of only 9.09% and 11.86%, respectively. Our findings suggest great potential for the design of a multifunctional CBL with good electron extraction and plasmonic properties for high performance PSCs.

Graphical abstract: Multifunctional bipyramid-Au@ZnO core–shell nanoparticles as a cathode buffer layer for efficient non-fullerene inverted polymer solar cells with improved near-infrared photoresponse

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Nov 2018, accepted on 02 Jan 2019 and first published on 04 Jan 2019


Article type: Paper
DOI: 10.1039/C8TA10549A
Citation: J. Mater. Chem. A, 2019, Advance Article
  •   Request permissions

    Multifunctional bipyramid-Au@ZnO core–shell nanoparticles as a cathode buffer layer for efficient non-fullerene inverted polymer solar cells with improved near-infrared photoresponse

    J. Li, Y. Bai, B. Yang, J. Zhang, X. Chen, T. Hayat, A. Alsaedi, Y. Yang, J. Hou and Z. Tan, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C8TA10549A

Search articles by author

Spotlight

Advertisements