Fabrication of carbon-coated silicon nanowires and their application in dye-sensitized solar cells

Junhee Kim, Jeongmin Lim, Minsoo Kim, Haeseok Lee, Yongseok Jun, Donghwan Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report the fabrication of silicon/carbon core/shell nanowire arrays using a two-step process, involving electroless metal deposition and chemical vapor deposition. In general, foreign shell materials that sheath core materials change the inherent characteristics of the core materials. The carbon coating functionalized the silicon nanowire arrays, which subsequently showed electrocatalytic activities for the reduction of iodide/triiodide. This was verified by cyclic voltammetry and electrochemical impedance spectroscopy. We employed the carbon-coated silicon nanowire arrays in dye-sensitized solar cells as counter electrodes. We optimized the carbon shells to maximize the photovoltaic performance of the resulting devices, and subsequently, a peak power conversion efficiency of 9.22% was achieved.

Original languageEnglish
Pages (from-to)18788-18794
Number of pages7
JournalACS Applied Materials and Interfaces
Volume6
Issue number21
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Silicon
Nanowires
Carbon
Fabrication
Iodides
Electrochemical impedance spectroscopy
Conversion efficiency
Cyclic voltammetry
Chemical vapor deposition
Metals
Coatings
Electrodes
Dye-sensitized solar cells

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Fabrication of carbon-coated silicon nanowires and their application in dye-sensitized solar cells. / Kim, Junhee; Lim, Jeongmin; Kim, Minsoo; Lee, Haeseok; Jun, Yongseok; Kim, Donghwan.

In: ACS Applied Materials and Interfaces, Vol. 6, No. 21, 01.01.2014, p. 18788-18794.

Research output: Contribution to journalArticle

@article{3aa89e223d884325894bd6ba89132fab,
title = "Fabrication of carbon-coated silicon nanowires and their application in dye-sensitized solar cells",
abstract = "We report the fabrication of silicon/carbon core/shell nanowire arrays using a two-step process, involving electroless metal deposition and chemical vapor deposition. In general, foreign shell materials that sheath core materials change the inherent characteristics of the core materials. The carbon coating functionalized the silicon nanowire arrays, which subsequently showed electrocatalytic activities for the reduction of iodide/triiodide. This was verified by cyclic voltammetry and electrochemical impedance spectroscopy. We employed the carbon-coated silicon nanowire arrays in dye-sensitized solar cells as counter electrodes. We optimized the carbon shells to maximize the photovoltaic performance of the resulting devices, and subsequently, a peak power conversion efficiency of 9.22{\%} was achieved.",
keywords = "carbon, core/shell nanostructure, counter electrode, dye-sensitized solar cells, silicon nanowire",
author = "Junhee Kim and Jeongmin Lim and Minsoo Kim and Haeseok Lee and Yongseok Jun and Donghwan Kim",
year = "2014",
month = "1",
day = "1",
doi = "10.1021/am504469y",
language = "English",
volume = "6",
pages = "18788--18794",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "21",

}

TY - JOUR

T1 - Fabrication of carbon-coated silicon nanowires and their application in dye-sensitized solar cells

AU - Kim, Junhee

AU - Lim, Jeongmin

AU - Kim, Minsoo

AU - Lee, Haeseok

AU - Jun, Yongseok

AU - Kim, Donghwan

PY - 2014/1/1

Y1 - 2014/1/1

N2 - We report the fabrication of silicon/carbon core/shell nanowire arrays using a two-step process, involving electroless metal deposition and chemical vapor deposition. In general, foreign shell materials that sheath core materials change the inherent characteristics of the core materials. The carbon coating functionalized the silicon nanowire arrays, which subsequently showed electrocatalytic activities for the reduction of iodide/triiodide. This was verified by cyclic voltammetry and electrochemical impedance spectroscopy. We employed the carbon-coated silicon nanowire arrays in dye-sensitized solar cells as counter electrodes. We optimized the carbon shells to maximize the photovoltaic performance of the resulting devices, and subsequently, a peak power conversion efficiency of 9.22% was achieved.

AB - We report the fabrication of silicon/carbon core/shell nanowire arrays using a two-step process, involving electroless metal deposition and chemical vapor deposition. In general, foreign shell materials that sheath core materials change the inherent characteristics of the core materials. The carbon coating functionalized the silicon nanowire arrays, which subsequently showed electrocatalytic activities for the reduction of iodide/triiodide. This was verified by cyclic voltammetry and electrochemical impedance spectroscopy. We employed the carbon-coated silicon nanowire arrays in dye-sensitized solar cells as counter electrodes. We optimized the carbon shells to maximize the photovoltaic performance of the resulting devices, and subsequently, a peak power conversion efficiency of 9.22% was achieved.

KW - carbon

KW - core/shell nanostructure

KW - counter electrode

KW - dye-sensitized solar cells

KW - silicon nanowire

UR - http://www.scopus.com/inward/record.url?scp=84910137158&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84910137158&partnerID=8YFLogxK

U2 - 10.1021/am504469y

DO - 10.1021/am504469y

M3 - Article

AN - SCOPUS:84910137158

VL - 6

SP - 18788

EP - 18794

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 21

ER -