Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry

S Mitra, S Cook, V Svrcek, RA Blackley, W Zhou, J Kovac�, U Cvelbar, D Mariotti

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We have demonstrated that three-dimensional (3D) surface engineering of silicon nanocrystals (SiNCs) by direct current microplasma processing in water with poly(3,4-ethylenedioxythiophene) doped by poly(styrenesulfonate) (PEDOT:PSS) can lead to nanocomposites with enhanced optoelectronic performance. Specifically, we have successfully shown improved photoluminescence properties of SiNCs inside water-based solution. The results also confirm that SiNCs become stable in water with potential application impact for biorelated applications. We have also shown that the microplasma processing in the presence of the polymer helps prevent the fast oxidation process over a longer period of time in comparison to the unprocessed sample. Furthermore, the assessment of transport properties confirmed the improvement of exciton dissociation after microplasma surface engineering; this can have direct implications for higher performance optoelectronic devices including solar cells.
LanguageEnglish
Pages23198-23207
JournalThe Journal of Physical Chemistry C
Volume117
Issue number44
DOIs
Publication statusPublished - 2013

Fingerprint

microplasmas
nanocomposites
nanocrystals
chemistry
polymers
silicon
liquids
engineering
water
optoelectronic devices
solar cells
transport properties
direct current
excitons
dissociation
photoluminescence
oxidation

Cite this

Mitra, S ; Cook, S ; Svrcek, V ; Blackley, RA ; Zhou, W ; Kovac�, J ; Cvelbar, U ; Mariotti, D. / Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry. In: The Journal of Physical Chemistry C. 2013 ; Vol. 117, No. 44. pp. 23198-23207.
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Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry. / Mitra, S; Cook, S; Svrcek, V; Blackley, RA; Zhou, W; Kovac�, J; Cvelbar, U; Mariotti, D.

In: The Journal of Physical Chemistry C, Vol. 117, No. 44, 2013, p. 23198-23207.

Research output: Contribution to journalArticle

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