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Solution-Based Phot...
Solution-Based Phototransformation of C-60 Nanorods : Towards Improved Electronic Devices
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- Barzegar, Hamid Reza (författare)
- Umeå universitet,Institutionen för fysik
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- Larsen, Christian (författare)
- Umeå universitet,Institutionen för fysik
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- Edman, Ludvig (författare)
- Umeå universitet,Institutionen för fysik
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- Wågberg, Thomas (författare)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- 2013-06-05
- 2013
- Engelska.
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Ingår i: Particle & particle systems characterization. - : Wiley-VCH Verlagsgesellschaft. - 0934-0866 .- 1521-4117. ; 30:8, s. 715-720
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A modified liquid-liquid interface precipitation synthesis of C-60 nanorods, effects and opportunities following an in situ photochemical transformation in the liquid state, and an electronic characterization using a field-effect transistor (FET) geometry are reported. The nanorods feature a high aspect ratio of approximate to 10(3) and a notably small average diameter of 172 nm. Interestingly, it is found that a decreased nanorod diameter appears to correlate with distinctly improved electronic properties, and an average electron mobility of 0.30 cm(2) V-1 s(-1), as measured in a FET geometry, is reported for as-grown nanorods, with the peak value being an impressive 1.0 cm(2) V-1 s(-1). A photoexposure using green laser light ( = 532 nm) is demonstrated to result in the formation of a polymer-C-60 shell encapsulating a monomer-C-60 bulk; such photo-transformed nanorods exhibit an electron mobility of 4.7 x 10(-3) cm(2) V-1 s(-1). It is notable that the utilized FET geometry only probes the polymer-C-60 nanorod surface shell, and that the monomer-C-60 bulk is anticipated to exhibit a higher mobility. Importantly, photoexposed nanorods can be conveniently processed as a stabile dispersion in common hydrophobic solvents, and this finding is attributed to the insoluble character of the polymer-C-60 shell.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Nyckelord
- C-60 nanorods
- nanowhiskers
- field-effect transistors
- liquid-liquid-interface precipitation
- photopolymerization
- Raman spectroscopy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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