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Title: Carbon nanotubes in TiO 2 nanofiber photoelectrodes for high-performance perovskite solar cells
Authors: Batmunkh, Munkhbayar
Macdonald, Thomas J.
Shearer, C.J.
Bat-Erdene, Munkhjargal
Wang, Yun
Biggs, Mark J.
Parkin, I.P.
Nann, T.
Shapter, J.G.
Issue Date: 2017
Publisher: © 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co.
Citation: BATMUNKH, M ... et al., 2017. Carbon nanotubes in TiO 2 nanofiber photoelectrodes for high-performance perovskite solar cells. Advanced Science, 4, 1600504
Abstract: 1D semiconducting oxides are unique structures that have been widely used for photovoltaic (PV) devices due to their capability to provide a direct pathway for charge transport. In addition, carbon nanotubes (CNTs) have played multifunctional roles in a range of PV cells because of their fascinating properties. Herein, the influence of CNTs on the PV performance of 1D titanium dioxide nanofiber (TiO2 NF) photoelectrode perovskite solar cells (PSCs) is systematically explored. Among the different types of CNTs, single-walled CNTs (SWCNTs) incorporated in the TiO2 NF photoelectrode PSCs show a significant enhancement (≈40%) in the power conversion efficiency (PCE) as compared to control cells. SWCNTs incorporated in TiO2 NFs provide a fast electron transfer within the photoelectrode, resulting in an increase in the short-circuit current (J sc) value. On the basis of our theoretical calculations, the improved open-circuit voltage (V oc) of the cells can be attributed to a shift in energy level of the photoelectrodes after the introduction of SWCNTs. Furthermore, it is found that the incorporation of SWCNTs into TiO2 NFs reduces the hysteresis effect and improves the stability of the PSC devices. In this study, the best performing PSC device constructed with SWCNT structures achieves a PCE of 14.03%.
Description: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Sponsor: Munkhbayar Batmunkh acknowledges International Postgraduate Research Scholarship (IPRS) and Australian Postgraduate Award (APA) for their financial support during his study in Australia. Dr. Thomas J. Macdonald and Prof. Ivan P. Parkin acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for their financial support (EP/L015862/1). The authors acknowledge the use of South Australian nodes of the Australian Microscopy & Microanalysis Research Facility (AMMRF) and the Australian National Fabrication Facility (ANFF) at Flinders University. All theoretical research was undertaken on the supercomputer of National Computational Infrastructure (NCI) in Canberra, Australia, which is supported by the Australian Commonwealth Government. The support of the Australian Research Council Discovery Program (DP130101714, DP150101354, and DP160101301) is gratefully acknowledged.
Version: Published
DOI: 10.1002/advs.201600504
URI: https://dspace.lboro.ac.uk/2134/24844
Publisher Link: http://dx.doi.org/10.1002/advs.201600504
ISSN: 2198-3844
Appears in Collections:Published Articles (Chemistry)

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