On the unipolarity of charge transport in methanofullerene diodes

Optoelectronics: Unipolar electron transport in fullerene diodes Fullerenes are commonly used in organic solar cells to attract and trap negatively charged electrons, whilst being able to block positively charged holes in photodiodes applications. Then the question is whether or not fullerenes condu...

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Autores principales:	Ardalan Armin, Safa Shoaee, Qianqian Lin, Paul L Burn, Paul Meredith
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/f8aff968a51044c7af3849af1da7ee3d
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spelling	oai:doaj.org-article:f8aff968a51044c7af3849af1da7ee3d2021-12-02T18:17:29ZOn the unipolarity of charge transport in methanofullerene diodes10.1038/s41528-017-0012-y2397-4621https://doaj.org/article/f8aff968a51044c7af3849af1da7ee3d2017-12-01T00:00:00Zhttps://doi.org/10.1038/s41528-017-0012-yhttps://doaj.org/toc/2397-4621Optoelectronics: Unipolar electron transport in fullerene diodes Fullerenes are commonly used in organic solar cells to attract and trap negatively charged electrons, whilst being able to block positively charged holes in photodiodes applications. Then the question is whether or not fullerenes conduct only one type of charge carriers, namely being unipolar, or are bipolar depending on the setups. A team led by Paul Meredith at Australia's University of Queensland evaluated the electron and hole transport mobility in neat PC70BM and PC60BM films using metal-insulator-semiconductor diodes, which are sensitive to the intrinsic transport properties of the samples. Their data showed that the hole mobility in bulk fullerenes is orders of magnitude lower than that of electrons and below the limits of their measurement, 10–9 cm2/Vs, indicating fullerenes are predominately unipolar. This research may help us better design fullerene-based optoelectronics and solar cells with high charge injection and extraction capability.Ardalan ArminSafa ShoaeeQianqian LinPaul L BurnPaul MeredithNature PortfolioarticleElectronicsTK7800-8360Materials of engineering and construction. Mechanics of materialsTA401-492ENnpj Flexible Electronics, Vol 1, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Electronics TK7800-8360 Materials of engineering and construction. Mechanics of materials TA401-492 Ardalan Armin Safa Shoaee Qianqian Lin Paul L Burn Paul Meredith On the unipolarity of charge transport in methanofullerene diodes
description	Optoelectronics: Unipolar electron transport in fullerene diodes Fullerenes are commonly used in organic solar cells to attract and trap negatively charged electrons, whilst being able to block positively charged holes in photodiodes applications. Then the question is whether or not fullerenes conduct only one type of charge carriers, namely being unipolar, or are bipolar depending on the setups. A team led by Paul Meredith at Australia's University of Queensland evaluated the electron and hole transport mobility in neat PC70BM and PC60BM films using metal-insulator-semiconductor diodes, which are sensitive to the intrinsic transport properties of the samples. Their data showed that the hole mobility in bulk fullerenes is orders of magnitude lower than that of electrons and below the limits of their measurement, 10–9 cm2/Vs, indicating fullerenes are predominately unipolar. This research may help us better design fullerene-based optoelectronics and solar cells with high charge injection and extraction capability.
format	article
author	Ardalan Armin Safa Shoaee Qianqian Lin Paul L Burn Paul Meredith
author_facet	Ardalan Armin Safa Shoaee Qianqian Lin Paul L Burn Paul Meredith
author_sort	Ardalan Armin
title	On the unipolarity of charge transport in methanofullerene diodes
title_short	On the unipolarity of charge transport in methanofullerene diodes
title_full	On the unipolarity of charge transport in methanofullerene diodes
title_fullStr	On the unipolarity of charge transport in methanofullerene diodes
title_full_unstemmed	On the unipolarity of charge transport in methanofullerene diodes
title_sort	on the unipolarity of charge transport in methanofullerene diodes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f8aff968a51044c7af3849af1da7ee3d
work_keys_str_mv	AT ardalanarmin ontheunipolarityofchargetransportinmethanofullerenediodes AT safashoaee ontheunipolarityofchargetransportinmethanofullerenediodes AT qianqianlin ontheunipolarityofchargetransportinmethanofullerenediodes AT paullburn ontheunipolarityofchargetransportinmethanofullerenediodes AT paulmeredith ontheunipolarityofchargetransportinmethanofullerenediodes
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On the unipolarity of charge transport in methanofullerene diodes

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