Nanowire-quantum-dot solar cells and the influence of nanowire length on the charge collection efficiency

被引：77

作者：

Leschkies, Kurtis S. ^{[1
]}

Jacobs, Alan G. ^{[1
]}

Norris, David J. ^{[1
]}

Aydil, Eray S. ^{[1
]}

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 19期

关键词：

SEMICONDUCTOR NANOCRYSTALS; PHOTOVOLTAIC DEVICES; ZNO NANOWIRES; ARRAYS; SILICON; FILMS; TRANSPORT; CDSE;

D O I：

10.1063/1.3258490

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

External quantum efficiency in solar cells based oil junctions between PbSe quantum dots (QDs) and thin ZnO films is increased by replacing the ZnO films with a vertically oriented array of single-crystalline ZnO nanowires, and infiltrating this array with colloidal QDs. When illuminated with 100 mW/cm(2) of simulated solar light. QD-nanowire solar cells exhibited power conversion efficiencies approaching 2%, approximately three times higher than that achieved with thin-film ZnO devices constructed with the same amount of QDs. Significant photocurrent and power conversion improvement with increasing nanowire length is consistent with higher exciton and charge collection efficiencies. (C) 2009 American Institute of Physics [doi:10.1063/1.3258490]

引用

页数：3

共 35 条

[1] Synthesis and characterization of ZnO nanowires and their integration into dye-sensitized solar cells [J].

Baxter, J. B. ;

Walker, A. M. ;

van Ommering, K. ;

Aydil, E. S. .

NANOTECHNOLOGY, 2006, 17 (11) :S304-S312

[2] Nanowire-based dye-sensitized solar cells [J].

Baxter, JB ;

Aydil, ES .

APPLIED PHYSICS LETTERS, 2005, 86 (05) :1-3

[3] Gallium arsenide p-i-n radial structures for photovoltaic applications [J].

Colombo, C. ;

Heiss, M. ;

Graetzel, M. ;

Fontcuberta i Morral, A. .

APPLIED PHYSICS LETTERS, 2009, 94 (17)

[4] Fast electron transport in metal organic vapor deposition grown dye-sensitized ZnO nanorod solar cells [J].

Galoppini, Elena ;

Rochford, Jonathan ;

Chen, Hanhong ;

Saraf, Gaurav ;

Lu, Yicheng ;

Hagfeldt, Anders ;

Boschloo, Gerrit .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (33) :16159-16161

[5] Silicon nanowire radial p-n junction solar cells [J].

Garnett, Erik C. ;

Yang, Peidong .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (29) :9224-+

[6] Low-temperature wafer-scale production of ZnO nanowire arrays [J].

Greene, LE ;

Law, M ;

Goldberger, J ;

Kim, F ;

Johnson, JC ;

Zhang, YF ;

Saykally, RJ ;

Yang, PD .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (26) :3031-3034

[7] Excitonic solar cells [J].

Gregg, BA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (20) :4688-4698

[8] Air-stable all-inorganic nanocrystal solar cells processed from solution [J].

Gur, I ;

Fromer, NA ;

Geier, ML ;

Alivisatos, AP .

SCIENCE, 2005, 310 (5747) :462-465

[9] Hybrid nanorod-polymer solar cells [J].

Huynh, WU ;

Dittmer, JJ ;

Alivisatos, AP .

SCIENCE, 2002, 295 (5564) :2425-2427

[10] Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters [J].

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (48) :18737-18753

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