Journal article
From light to hydrogen: the complete life cycle of free charges in photocatalytic nanoparticles
JM de la Perrelle, RJ Hudson, A Dolan, S Jana, X Pan, MR Andersson, HS Tan, ZH Alotaibi, GG Andersson, TA Smith, DM Huang, TW Kee
Sustainable Energy and Fuels | Published : 2024
DOI: 10.1039/d4se00190g
Abstract
The blend of donor PM6 and non-fullerene acceptor Y6 is high performing as both an active layer in organic photovoltaics and as a component of photocatalysts for the renewable production of hydrogen gas. Despite the high performance of PM6:Y6 blends, many aspects of the photophysics of this material remain unclear. Here we present a detailed spectroscopic analysis of bulk heterojunction PM6:Y6 nanoparticles, in the presence and absence of the Pt co-catalyst and hole scavenger ascorbic acid, over 11 orders of magnitude in time, ranging from tens of femtoseconds to hundreds of microseconds. We find that the excitation of Y6 primarily results in the formation of charges first in Y6 domains, fol..
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Grants
Awarded by Australian Centre for Advanced Photovoltaics
Funding Acknowledgements
J. M. d. l. P. and A. D. acknowledge support from an Australian Government Research Training Program (RTP) Stipend. J. M. d. l. P. acknowledges a Playford Trust PhD Scholarship, a Constance Fraser Supplementary Scholarship, and a Forrest George and Sandra Lynne Young Supplementary Scholarship. T. A. S., M. R. A., and T. W. K. were supported by research grants from the Australian Research Council (DP160103797, DP220102900, and LE0989747). T. A. S. and R. J. H. were supported the Australian Research Council (ARC) Centre of Excellence in Exciton Science (CE170100026), the ARC Linkage Infrastructure, Equipment and Facilities Scheme (LE200100051), and the Australian Centre for Advanced Photovoltaics (ACAP) infrastructure scheme. H.-S. T. acknowledges support from the Singapore Ministry of Education Academic Research Fund (RG9/21). The authors acknowledge the facilities, and the scientific and technical assistance of Microscopy Australia and the Australian National Fabrication Facility (ANFF) under the National Collaborative Research Infrastructure Strategy, at the South Australian Regional Facility, Flinders Microscopy and Microanalysis, Flinders University. The authors thank Gregory Metha for providing the solar-like light source and Pt salt.