Co-sensitized quantum dot solar cell based on ZnO nanowire

被引：66

作者：

Chen, J. ^{[1
]}

Wu, J. ^{[1
]}

Lei, W. ^{[1
]}

Song, J. L. ^{[2
]}

Deng, W. Q. ^{[2
]}

Sun, X. W. ^{[3
]}

机构：

[1] Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 639798, Singapore

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

APPLIED SURFACE SCIENCE | 2010年 / 256卷 / 24期

基金：

美国国家科学基金会;

关键词：

Quantum dot; Solar cell; CdS; CdSe; ZnO nanowire; PHOTOSENSITIZATION;

D O I：

10.1016/j.apsusc.2010.05.086

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：

An efficient photoelectrode is fabricated by sequentially assembled CdS and CdSe quantum dots (QDs) onto a ZnO-nanowire film. As revealed by UV-vis absorption spectrum and scanning electron microscopy (SEM), CdS and CdSe QDs can be effectively adsorbed on ZnO-nanowire array. Electrochemical impedance spectroscopy (EIS) measured demonstrates that the electron lifetime for ZnO/CdS/CdSe (13.8 ms) is calculated longer than that of ZnO/CdS device (6.2 ms), which indicates that interface charge recombination rate is reduced by sensitizing CdSe QDs. With broader light absorption range and longer electron lifetime, a power conversion efficiency of 1.42% is achieved for ZnO based CdS/CdSe co-sensitized solar cell under the illumination of one Sun (AM 1.5G, 100mWcm(-2)). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：7438 / 7441

页数：4

共 16 条

[1] Directly assembled CdSe quantum dots on TiO2 in aqueous solution by adjusting pH value for quantum dot sensitized solar cells [J].

Chen, J. ;

Zhao, D. W. ;

Song, J. L. ;

Sun, X. W. ;

Deng, W. Q. ;

Liu, X. W. ;

Lei, W. .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (12) :2265-2267

[2] Bilayer ZnO nanostructure fabricated by chemical bath and its application in quantum dot sensitized solar cell [J].

Chen, J. ;

Li, Chen ;

Song, J. L. ;

Sun, X. W. ;

Lei, W. ;

Deng, W. Q. .

APPLIED SURFACE SCIENCE, 2009, 255 (17) :7508-7511

[3] Two-step growth of a hierarchical ZnO nanostructure by aqueous thermal decomposition in a neutral solution and its photovoltaic property [J].

Chen, J. ;

Lei, W. ;

Song, J. L. ;

Sun, X. W. ;

Zhang, X. B. ;

Deng, W. Q. .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2009, 41 (05) :822-827

[4] An oleic acid-capped CdSe quantum-dot sensitized solar cell [J].

Chen, Jing ;

Song, J. L. ;

Sun, X. W. ;

Deng, W. Q. ;

Jiang, C. Y. ;

Lei, W. ;

Huang, J. H. ;

Liu, R. S. .

APPLIED PHYSICS LETTERS, 2009, 94 (15)

[5] Hierarchically structured ZnO film for dye-sensitized solar cells with enhanced energy conversion efficiency [J].

Chou, Tammy P. ;

Zhang, Qifeng ;

Fryxell, Glen E. ;

Cao, Guozhong .

ADVANCED MATERIALS, 2007, 19 (18) :2588-+

[6] ZnO Nanoparticles-CdS Quantum Dots/N3 Dye Molecules: Dual Photosensitization [J].

Ganesh, T. ;

Mane, Rajaram S. ;

Cai, Gangeri ;

Chang, Jin-Ho ;

Han, Sung-Hwan .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (18) :7666-7669

[7] Modeling and interpretation of electrical impedance spectra of dye solar cells operated under open-circuit conditions [J].

Kern, R ;

Sastrawan, R ;

Ferber, J ;

Stangl, R ;

Luther, J .

ELECTROCHIMICA ACTA, 2002, 47 (26) :4213-4225

[8] LUMINESCENCE OF ZNO UNDER HIGH ONE-QUANTUM AND 2-QUANTUM EXCITATION [J].

KLINGSHIRN, C .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1975, 71 (02) :547-556

[9] Highly Efficient Quantum-Dot-Sensitized Solar Cell Based on Co-Sensitization of CdS/CdSe [J].

Lee, Yuh-Lang ;

Lo, Yi-Siou .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (04) :604-609

[10] ZnO nanostructures as efficient antireflection layers in solar cells [J].

Lee, Yun-Ju ;

Ruby, Douglas S. ;

Peters, David W. ;

McKenzie, Bonnie B. ;

Hsu, Julia W. P. .

NANO LETTERS, 2008, 8 (05) :1501-1505

← 1 2 →