Enhanced electron transport in mesoporous TiO 2 films modified by sol - Gel necking for dye-sensitized solar cells

Sang Yeop An; Jeong Hyun Park; Jae Hong Kim; Chel Jong Choi; Hyunsoo Kim; Kwang Soon Ahn

doi:10.1166/jnn.2012.5575

Enhanced electron transport in mesoporous TiO ₂ films modified by sol - Gel necking for dye-sensitized solar cells

Sang Yeop An
, Jeong Hyun Park
, Jae Hong Kim
, Chel Jong Choi
, Hyunsoo Kim^*
, Kwang Soon Ahn

^*Corresponding author for this work

Department of Semiconductor Science and Technology

Yeungnam University

Research output: Contribution to journal › Journal article › peer-review

7 Scopus citations

Abstract

Mesoporous TiO ₂ films modified via sol-gel necking were fabricated by dispersing Ti tetra-isopropoxide (TTIP; 8 to 16 wt% over TiO ₂) with TiO ₂ nanoparticles in isopropyl alcohol. The dyesensitized solar cells (DSSCs) with 13 wt% TTIP-modified TiO ₂ film exhibited significantly improved overall energy conversion efficiency, despite having less adsorbed dye when compared with DSSCs with untreated and TiCl ₄ post-treated TiO ₂ films. The improvement can be attributed to the sol-gel necking (or interconnection) between the nanoparticles which leads to a much faster electron transport and a suppression of the recombination (or back electron transfer) between the TiO ₂ and electrolyte.

Original language	English
Pages (from-to)	3398-3401
Number of pages	4
Journal	Journal of nanoscience and nanotechnology
Volume	12
Issue number	4
DOIs	https://doi.org/10.1166/jnn.2012.5575
State	Published - 2012

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Dye-sensitized solar cell
Mesoporous TiO
Sol-gel necking
Ti tetra-iso-propoxide

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Chemical
Chemistry
Physics & Astronomy
Biological Sciences

Access to Document

10.1166/jnn.2012.5575

Cite this

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title = "Enhanced electron transport in mesoporous TiO 2 films modified by sol - Gel necking for dye-sensitized solar cells",

abstract = "Mesoporous TiO 2 films modified via sol-gel necking were fabricated by dispersing Ti tetra-isopropoxide (TTIP; 8 to 16 wt\% over TiO 2) with TiO 2 nanoparticles in isopropyl alcohol. The dyesensitized solar cells (DSSCs) with 13 wt\% TTIP-modified TiO 2 film exhibited significantly improved overall energy conversion efficiency, despite having less adsorbed dye when compared with DSSCs with untreated and TiCl 4 post-treated TiO 2 films. The improvement can be attributed to the sol-gel necking (or interconnection) between the nanoparticles which leads to a much faster electron transport and a suppression of the recombination (or back electron transfer) between the TiO 2 and electrolyte.",

keywords = "Dye-sensitized solar cell, Mesoporous TiO, Sol-gel necking, Ti tetra-iso-propoxide",

author = "An, \{Sang Yeop\} and Park, \{Jeong Hyun\} and Kim, \{Jae Hong\} and Choi, \{Chel Jong\} and Hyunsoo Kim and Ahn, \{Kwang Soon\}",

year = "2012",

doi = "10.1166/jnn.2012.5575",

language = "English",

volume = "12",

pages = "3398--3401",

journal = "Journal of nanoscience and nanotechnology",

issn = "1533-4880",

number = "4",

}

TY - JOUR

T1 - Enhanced electron transport in mesoporous TiO 2 films modified by sol - Gel necking for dye-sensitized solar cells

AU - An, Sang Yeop

AU - Park, Jeong Hyun

AU - Kim, Jae Hong

AU - Choi, Chel Jong

AU - Kim, Hyunsoo

AU - Ahn, Kwang Soon

PY - 2012

Y1 - 2012

N2 - Mesoporous TiO 2 films modified via sol-gel necking were fabricated by dispersing Ti tetra-isopropoxide (TTIP; 8 to 16 wt% over TiO 2) with TiO 2 nanoparticles in isopropyl alcohol. The dyesensitized solar cells (DSSCs) with 13 wt% TTIP-modified TiO 2 film exhibited significantly improved overall energy conversion efficiency, despite having less adsorbed dye when compared with DSSCs with untreated and TiCl 4 post-treated TiO 2 films. The improvement can be attributed to the sol-gel necking (or interconnection) between the nanoparticles which leads to a much faster electron transport and a suppression of the recombination (or back electron transfer) between the TiO 2 and electrolyte.

AB - Mesoporous TiO 2 films modified via sol-gel necking were fabricated by dispersing Ti tetra-isopropoxide (TTIP; 8 to 16 wt% over TiO 2) with TiO 2 nanoparticles in isopropyl alcohol. The dyesensitized solar cells (DSSCs) with 13 wt% TTIP-modified TiO 2 film exhibited significantly improved overall energy conversion efficiency, despite having less adsorbed dye when compared with DSSCs with untreated and TiCl 4 post-treated TiO 2 films. The improvement can be attributed to the sol-gel necking (or interconnection) between the nanoparticles which leads to a much faster electron transport and a suppression of the recombination (or back electron transfer) between the TiO 2 and electrolyte.

KW - Dye-sensitized solar cell

KW - Mesoporous TiO

KW - Sol-gel necking

KW - Ti tetra-iso-propoxide

UR - https://www.scopus.com/pages/publications/84863313009

U2 - 10.1166/jnn.2012.5575

DO - 10.1166/jnn.2012.5575

M3 - Journal article

AN - SCOPUS:84863313009

SN - 1533-4880

VL - 12

SP - 3398

EP - 3401

JO - Journal of nanoscience and nanotechnology

JF - Journal of nanoscience and nanotechnology

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