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In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications

Sebastian Wood, Oliver Garnett, Nurlan Tokmoldin, Wing C. Tsoi, Saif A. Haque, Ji-Seon Kim, Wing Chung Tsoi Orcid Logo

Faraday Discussions

Swansea University Author: Wing Chung Tsoi Orcid Logo

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DOI (Published version): 10.1039/C4FD00141A

Abstract

The performance of hybrid (organic–inorganic) photovoltaic devices is critically dependent on the thin film morphology. This work studies the film formation process using the in situ thermal decomposition of a soluble precursor to form a well-distributed network of CdS nanoparticles within a poly(3-...

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Published in: Faraday Discussions
ISSN: 1359-6640 1364-5498
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa32052
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spelling 2017-02-23T09:32:05.4881690 v2 32052 2017-02-23 In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications 7e5f541df6635a9a8e1a579ff2de5d56 0000-0003-3836-5139 Wing Chung Tsoi Wing Chung Tsoi true false 2017-02-23 MTLS The performance of hybrid (organic–inorganic) photovoltaic devices is critically dependent on the thin film morphology. This work studies the film formation process using the in situ thermal decomposition of a soluble precursor to form a well-distributed network of CdS nanoparticles within a poly(3-hexylthiophene) (P3HT) polymer matrix. Resonant Raman spectroscopy is used to probe the formation of the inorganic nanoparticles and the corresponding changes in the molecular order of the polymer. We find that the CdS precursor decomposes rapidly upon heating to 160 °C, but that this has a disruptive effect on the P3HT. The extent of this disruption can be controlled by adjusting the annealing temperature, and nanowire aggregates of P3HT are found to have increased susceptibility. Atomic force microscopy reveals that at high temperatures (>200 °C), cracks form in the film, resulting in a ‘plateau’-like microstructure. In order to retain the preferable ‘granular’ microstructure and to control the molecular disruption, low decomposition temperatures are needed. This work identifies a particular problem for optimising the hybrid thin film morphology and shows how it can be partially overcome. Journal Article Faraday Discussions 1359-6640 1364-5498 31 12 2014 2014-12-31 10.1039/C4FD00141A COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-02-23T09:32:05.4881690 2017-02-23T09:31:20.3253367 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Sebastian Wood 1 Oliver Garnett 2 Nurlan Tokmoldin 3 Wing C. Tsoi 4 Saif A. Haque 5 Ji-Seon Kim 6 Wing Chung Tsoi 0000-0003-3836-5139 7
title In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
spellingShingle In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
Wing Chung Tsoi
title_short In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
title_full In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
title_fullStr In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
title_full_unstemmed In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
title_sort In situ formation of organic–inorganic hybrid nanostructures for photovoltaic applications
author_id_str_mv 7e5f541df6635a9a8e1a579ff2de5d56
author_id_fullname_str_mv 7e5f541df6635a9a8e1a579ff2de5d56_***_Wing Chung Tsoi
author Wing Chung Tsoi
author2 Sebastian Wood
Oliver Garnett
Nurlan Tokmoldin
Wing C. Tsoi
Saif A. Haque
Ji-Seon Kim
Wing Chung Tsoi
format Journal article
container_title Faraday Discussions
publishDate 2014
institution Swansea University
issn 1359-6640
1364-5498
doi_str_mv 10.1039/C4FD00141A
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
active_str 0
description The performance of hybrid (organic–inorganic) photovoltaic devices is critically dependent on the thin film morphology. This work studies the film formation process using the in situ thermal decomposition of a soluble precursor to form a well-distributed network of CdS nanoparticles within a poly(3-hexylthiophene) (P3HT) polymer matrix. Resonant Raman spectroscopy is used to probe the formation of the inorganic nanoparticles and the corresponding changes in the molecular order of the polymer. We find that the CdS precursor decomposes rapidly upon heating to 160 °C, but that this has a disruptive effect on the P3HT. The extent of this disruption can be controlled by adjusting the annealing temperature, and nanowire aggregates of P3HT are found to have increased susceptibility. Atomic force microscopy reveals that at high temperatures (>200 °C), cracks form in the film, resulting in a ‘plateau’-like microstructure. In order to retain the preferable ‘granular’ microstructure and to control the molecular disruption, low decomposition temperatures are needed. This work identifies a particular problem for optimising the hybrid thin film morphology and shows how it can be partially overcome.
published_date 2014-12-31T03:39:12Z
_version_ 1763751758904950784
score 11.037144

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