Broadband light confinement using a hierarchically structured TiO2 multi-layer for dye-sensitized solar cells

被引：27
作者：
Chang, Yong-June [1 ,2 ]
Kong, Eui-Hyun [1 ,2 ]
Park, Yoon-Cheol [3 ]
Jang, Hyun Myung [1 ,2 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Div Adv Mat Sci, Pohang 790784, South Korea
[3] Res Inst Ind Sci & Technol RIST, Pohang 790784, South Korea
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 34期
基金：
新加坡国家研究基金会;
关键词：
ENERGY-CONVERSION EFFICIENCY; HIGH SURFACE-AREAS; TITANIA BEADS; SCATTERING; FILM; SIMULATIONS; PERFORMANCE; 10-PERCENT;
D O I：
10.1039/c3ta11527e
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Herein, we present a simple strategy for broadband light confinement without sacrificing dye-loading capacity by suitably combining multi-layer architecture with hierarchically structured TiO2. For this purpose, three distinct TiO2 hierarchical nanomaterials were exploited to simultaneously realize high internal surface area and a graded series of optical properties (in terms of reflectance and transmittance). The present hierarchically structured multi-layer showed a remarkable improvement in the overall efficiency for dye-sensitized solar cells (DSCs): a maximum of 11.43% at 1 Sun (12.16% at 1/8 Sun) versus 8.15% at 1 Sun (8.26% at 1/8 Sun) for the reference cell made of a nanocrystalline TiO2 single-layer. This notable result is attributed to the synergetic effects of the enhanced broadband light confinement, dye-loading, and charge-collection efficiency.
引用
收藏
页码：9707 / 9713
页数：7
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