Biological Templates for Antireflective Current Collectors for Photoelectrochemical Cell Applications

被引：73

作者：

Chiang, Chia-Ying ^{[1
]}

Epstein, Jillian ^{[1
]}

Brown, Adam ^{[2
]}

Munday, Jeremy N. ^{[3
]}

Culver, James N. ^{[2
,4
]}

Ehrman, Sheryl ^{[1
]}

机构：

[1] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

[2] Univ Maryland, Inst Biosci & Biotechnol Res, College Pk, MD 20742 USA

[3] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA

[4] Univ Maryland, Dept Plant Sci & Landscape Architecture, College Pk, MD 20742 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 11期

基金：

美国国家科学基金会;

关键词：

Photoelectrochemical cell; self assembled current collector; antireflective structure; CuO; SILICON ANODE; THIN-FILMS; WATER; CONDUCTION; DEVICE; COPPER; CUO;

D O I：

10.1021/nl303579z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three-dimensional (3D) structures such as nanowires, nanotubes, and nanorods have the potential to increase surface area, reduce light reflection, and shorten charge carrier transport distances. The assembly of such structures thus holds great promise for enhancing photoelectrochemical solar cell efficiency. In this study, genetically modified Tobacco mosaic virus (TMV1cys) was used to form self-assembling 3D nanorod current collectors and low light-reflecting surfaces. Photoactive CuO was subsequently deposited by sputtering onto these patterned nanostructures, and these structures were examined for photocurrent activity. CuO thicknesses of 520 nm on TMV1cys patterned current collectors produced the highest photocurrent density of 3.15 mA/cm(2) yet reported for a similar sized CuO system. Reflectivity measurements are in agreement with full-wave electromagnetic simulations, which can be used as a design tool for optimizing the CuO system. Thus the combined effects of reducing charge carrier transport distance, increasing surface area, and the suppression of light reflection make these virus-templated surfaces ideal for photoelectrochemical applications.

引用

页码：6005 / 6011

页数：7

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