Incorporation of multiwalled carbon nanotubes into TiO2 nanowires for enhancing photovoltaic performance of dye-sensitized solar cells via highly efficient electron transfer

被引：37
作者：
Ahn, Ji Young [1 ]
Kim, Ji Hoon [1 ]
Moon, Kook Joo [2 ]
Kim, Jong Hyun [4 ]
Lee, Chang Sun [4 ]
Kim, Min Young [4 ]
Kang, Jae Wook [3 ]
Kim, Soo Hyung [1 ,2 ,4 ]
机构：
[1] Pusan Natl Univ, Dept Nanofus Technol, Pusan 609735, South Korea
[2] Pusan Natl Univ, Dept Samsung Adv Integrated Circuit, Pusan 609735, South Korea
[3] Chonbuk Natl Univ, Dept Flexible & Printable Elect, Jeonju 561756, South Korea
[4] Pusan Natl Univ, Dept Nanomechatron Engn, Pusan 609735, South Korea
来源：
SOLAR ENERGY | 2013年 / 92卷
基金：
新加坡国家研究基金会;
关键词：
Multiwalled carbon nanotubes; TiO2; nanowires; Electrospinning; Electron transfer; Dye-sensitized solar cells; ARRAYS;
D O I：
10.1016/j.solener.2013.02.031
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Multiwalled carbon nanotube (MWCNT)-embedded TiO2 nanowires (NWs) were synthesized by a combination of electrospinning and calcination processes. We examined the effect of the MWCNT mass fraction in the MWCNT-TiO2 composite NW-based photoelectrode on the photovoltaic properties of the resulting dye-sensitized solar cells (DSSCs). The MWCNT (5 wt%)-TiO2 composite NW-based DSSC fabricated in this study showed a significantly improved short circuit current density and power conversion efficiency (PCE) compared to pure TiO2 NW (i.e., MWCNT 0 wt%)-based DSSCs (the values increased from 2.91 +/- 0.15 to 10.72 +/- 0.21 mA/cm(2) and from 1.44 +/- 0.10% to 5.03 +/- 0.35%, respectively). This improvement was due to an increase in rapid electron transfer and suppression in charge recombination caused by MWCNTs embedded in the TiO2 matrix NWs. These specially designed MWCNT-TiO2 composite NW-based photoelectrodes have great potential as an effective charge transfer medium to inherently enhance the photovoltaic performance of DSSCs. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：41 / 46
页数：6
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