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Lookup NU author(s): Hannes Michaels, Dr Fabio Cucinotta, Dr Paul Waddell, Professor Mike ProbertORCiD, Professor Marina FreitagORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 The Royal Society of Chemistry. Emerging technologies in solar energy will be critical in enabling worldwide society in overcoming the present energy challenges and reaching carbon net zero. Inefficient and unstable charge transport materials limit the current emerging energy conversion and storage technologies. Low-dimensional coordination polymers represent an alternative, unprecedented class of charge transport materials, comprised of molecular building blocks. Here, we provide a comprehensive study of mixed-valence coordination polymers from an analysis of the charge transport mechanism to their implementation as hole-conducting layers. CuII dithiocarbamate complexes afford morphology control of 1D polymer chains linked by (CuI2X2) copper halide rhombi. Concerted theoretical and experimental efforts identified the charge transport mechanism in the transition to band-like transport with a modeled effective hole mass of 6me. The iodide-bridged coordination polymer showed an excellent conductivity of 1 mS cm−1 and a hole mobility of 5.8 10−4 cm2 (V s)−1 at room temperature. Nanosecond selective hole injection into coordination polymer thin films was captured by nanosecond photoluminescence of halide perovskite films. Coordination polymers constitute a sustainable, tunable alternative to the current standard of heavily doped organic hole conductors.
Author(s): Michaels H, Golomb MJ, Kim BJ, Edvinsson T, Cucinotta F, Waddell PG, Probert MR, Konezny SJ, Boschloo G, Walsh A, Freitag M
Publication type: Article
Publication status: Published
Journal: Journal of Materials Chemistry A
Year: 2022
Volume: 10
Issue: 17
Pages: 9582-9591
Online publication date: 17/03/2022
Acceptance date: 14/03/2022
Date deposited: 03/05/2022
ISSN (print): 2050-7488
ISSN (electronic): 2050-7496
Publisher: Royal Society of Chemistry
URL: .DOI https://doi.org/10.1039/D2TA00267A
DOI: 10.1039/d2ta00267a
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