Imperial College London
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Professor Martyn A McLachlan

Faculty of Engineering, Department of Materials

Professor of Thin Films, Interfaces and Electronic Devices
 
 
 
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Contact

 

+44 (0)20 7594 9692martyn.mclachlan Website

 
 
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Location

 

401 HMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Macdonald:2019:10.1002/smtd.201900164,
author = {Macdonald, TJ and Batmunkh, M and Lin, C-T and Kim, J and Tune, DD and Ambroz, F and Li, X and Xu, S and Sol, C and Papakonstantinou, I and McLachlan, MA and Parkin, IP and Shapter, JG and Durrant, JR},
doi = {10.1002/smtd.201900164},
journal = {Small Methods},
pages = {1--10},
title = {Origin of performance enhancement in TiO2-carbon nanotube composite perovskite solar cells},
url = {http://dx.doi.org/10.1002/smtd.201900164},
volume = {3},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Carbon nanotubes are shown to be beneficial additives to perovskite solar cells, and the inclusion of such nanomaterials will continue to play a crucial role in the push toward developing efficient and stable device architectures. Herein, titanium dioxide/carbon nanotube composite perovskite solar cells are fabricated, and device performance parameters are correlated with spectroscopic signatures of the materials to understand the origin of performance enhancement. By probing the charge carrier dynamics with photoluminescence and femtosecond transient absorption spectroscopy, the results indicate that charge transfer is not improved by the presence of the carbon nanotubes. Instead, carbon nanotubes are shown to passivate the electronic defect states within the titanium dioxide, which can lead to stronger radiative recombination in the titanium dioxide/carbon nanotube films. The defect passivation allows the perovskite solar cells made using an optimized titanium dioxide/carbon nanotube composite to achieve a peak power conversion efficiency of 20.4% (19% stabilized), which is one of the highest values reported for perovskite solar cells not incorporating a mixed cation light absorbing layer. The results discuss new fundamental understandings for the role of carbon nanomaterials in perovskite solar cells and present a significant step forward in advancing the field of highperformance photovoltaics.
AU  - Macdonald,TJ
AU  - Batmunkh,M
AU  - Lin,C-T
AU  - Kim,J
AU  - Tune,DD
AU  - Ambroz,F
AU  - Li,X
AU  - Xu,S
AU  - Sol,C
AU  - Papakonstantinou,I
AU  - McLachlan,MA
AU  - Parkin,IP
AU  - Shapter,JG
AU  - Durrant,JR
DO  - 10.1002/smtd.201900164
EP  - 10
PY  - 2019///
SN  - 2366-9608
SP  - 1
TI  - Origin of performance enhancement in TiO2-carbon nanotube composite perovskite solar cells
T2  - Small Methods
UR  - http://dx.doi.org/10.1002/smtd.201900164
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000490288400019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/full/10.1002/smtd.201900164
UR  - http://hdl.handle.net/10044/1/74619
VL  - 3
ER  -
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