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First-Row Transition Metal Complexes for the Conversion of Light into Electricity and Electricity into Light

  • Chapter
Organometallics and Related Molecules for Energy Conversion

Part of the book series: Green Chemistry and Sustainable Technology ((GCST))

Abstract

Ruthenium and iridium complexes have been widely used as sensitizer for dye-sensitized solar cells (conversion of light into electricity) and as highly phosphorescent emitters for organic electroluminescence (conversion of electricity into light). The high costs and limited availability of these platinoid metals have motivated the search for alternatives based on first-row transition metals. First-row transition metal complexes have also been used as alternatives to existing materials as redox mediator. This chapter provides an overview of such materials used as an active component of the aforementioned devices.

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Abbreviations

Dcbpy:

4,4′-dicarboxy-2,2′-bipyridine

DSC:

dye-sensitized solar cell

ff:

fill factor

HOMO:

highest occupied molecular orbitals

IPCE:

incident monochromatic photon-to-current conversion efficiency

iTMCs:

ionic transition metal complexes

Jsc:

short-circuit current

LEC:

light-emitting electrochemical cells

LF:

ligand field

LUMO:

lowest unoccupied molecular orbitals

OLEDs:

organic light-emitting diodes

MLCT:

metal-to-ligand charge transfer

MPCT:

metal-to-particle charge transfer

ppy:

2-phenylpyridine

TADF:

thermally activated delayed fluorescence

TCO:

transparent conductive oxide

Voc:

open-circuit potential

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Acknowledgements

The financial support from the European Union (HetIridium, CIG322280) is greatly appreciated. I am very grateful to Dr John Fossey for the discussion and time for proofreading the manuscript.

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  1. School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK

    Etienne Baranoff

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  1. Etienne Baranoff
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Correspondence to Etienne Baranoff .

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  1. Department of Chemistry, Hong Kong Baptist University, Hong Kong, China

    Wai-Yeung Wong

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Baranoff, E. (2015). First-Row Transition Metal Complexes for the Conversion of Light into Electricity and Electricity into Light. In: Wong, WY. (eds) Organometallics and Related Molecules for Energy Conversion. Green Chemistry and Sustainable Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46054-2_3

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