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

Somak Mitra; Steffan Cook; Vladimir Svrcek; Ross A. Blackley; Wuzong Zhou; Janez Kovac; Uros Cvelbar; Davide Mariotti

doi:10.1021/jp400938x

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

Somak Mitra, Steffan Cook, Vladimir Svrcek, Ross A. Blackley, Wuzong Zhou, Janez Kovac, Uros Cvelbar, Davide Mariotti^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

36 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.

Original language	English
Pages (from-to)	23198-23207
Number of pages	10
Journal	Journal of Physical Chemistry C
Volume	117
Issue number	44
DOIs	https://doi.org/10.1021/jp400938x
Publication status	Published - 7 Nov 2013

Keywords

POROUS SILICON
OPTICAL-PROPERTIES
SURFACE-CHEMISTRY
SI NANOCRYSTALS
QUANTUM DOTS
SOLAR-CELLS
FILMS
LUMINESCENCE
TEMPERATURE
LASER

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10.1021/jp400938x

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title = "Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry",

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.",

keywords = "POROUS SILICON, OPTICAL-PROPERTIES, SURFACE-CHEMISTRY, SI NANOCRYSTALS, QUANTUM DOTS, SOLAR-CELLS, FILMS, LUMINESCENCE, TEMPERATURE, LASER",

author = "Somak Mitra and Steffan Cook and Vladimir Svrcek and Blackley, {Ross A.} and Wuzong Zhou and Janez Kovac and Uros Cvelbar and Davide Mariotti",

year = "2013",

month = nov,

day = "7",

doi = "10.1021/jp400938x",

language = "English",

volume = "117",

pages = "23198--23207",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

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T1 - Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry

AU - Mitra, Somak

AU - Cook, Steffan

AU - Svrcek, Vladimir

AU - Blackley, Ross A.

AU - Zhou, Wuzong

AU - Kovac, Janez

AU - Cvelbar, Uros

AU - Mariotti, Davide

PY - 2013/11/7

Y1 - 2013/11/7

N2 - 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.

AB - 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.

KW - POROUS SILICON

KW - OPTICAL-PROPERTIES

KW - SURFACE-CHEMISTRY

KW - SI NANOCRYSTALS

KW - QUANTUM DOTS

KW - SOLAR-CELLS

KW - FILMS

KW - LUMINESCENCE

KW - TEMPERATURE

KW - LASER

U2 - 10.1021/jp400938x

DO - 10.1021/jp400938x

M3 - Article

SN - 1932-7447

VL - 117

SP - 23198

EP - 23207

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 44

ER -

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

Abstract

Keywords

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