CuInS2-Sensitized Quantum Dot Solar Cell. Electrophoretic Deposition, Excited-State Dynamics, and Photovoltaic Performance

被引：223

作者：

Santra, Pralay K. ^{[1
,2
]}

Nair, Pratheesh V. ^{[1
,2
,3
]}

Thomas, K. George ^{[3
]}

Kamat, Prashant V. ^{[1
,2
]}

机构：

[1] Univ Notre Dame, Radiat Lab, Dept Chem & Biochem, Notre Dame, IN 46556 USA

[2] Univ Notre Dame, Dept Chem & Biomoelcular Engn, Notre Dame, IN 46556 USA

[3] Indian Inst Sci Educ & Res Thiruvananthapuram IIS, Sch Chem, Thiruvananthapuram 695016, Kerala, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 05期

基金：

美国能源部;

关键词：

ELECTRON-TRANSFER; COLLOIDAL CUINS2; LIGHT ENERGY; CDSE; DYE; EFFICIENCY; RECOMBINATION; LUMINESCENT; INJECTION;

D O I：

10.1021/jz400181m

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：

Ternary metal chalcogenides such as CuInS2 offer new opportunities to design quantum dot solar cells (QDSC). Chemically synthesized CuInS2 quantum dots (particle diameter, 2.6 nm) have been successfully deposited within the mesoscopic TiO2 film using electrophoretic deposition (150 V cm(-1) dc field). The primary photoinduced process of electron injection from excited CuInS2 into TiO2 occurs with a rate constant of 5.75 x 10(11) s(-1). The TiO2/CuInS2 films are photoactive and produce anodic photocurrent with a power conversion efficiency of 1.14%. Capping the TiO2/CuInS2 film with a CdS layer decreases the interfacial charge recombination and thus offers further improvement in the power conversion efficiency (3.91%). The synergy of using CdS as a passivation layer in the composite film is also evident from the increased external quantum efficiency of the electrode in the red region where only CuInS2 absorbs the incident light.

引用

页码：722 / 729

页数：8

共 42 条

[11] Dye versus Quantum Dots in Sensitized Solar Cells: Participation of Quantum Dot Absorber in the Recombination Process [J].

Hod, Idan ;

Gonzalez-Pedro, Victoria ;

Tachan, Zion ;

Fabregat-Santiago, Francisco ;

Mora-Sero, Ivan ;

Bisquert, Juan ;

Zaban, Arie .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2011, 2 (24) :3032-3035

[12] Comparison of Dye- and Semiconductor-Sensitized Porous Nanocrystalline Liquid Junction Solar Cells [J].

Hodes, Gary .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (46) :17778-17787

[13] Aqueous colloidal CuInS2 for quantum dot sensitized solar cells [J].

Hu, Xing ;

Zhang, Quanxin ;

Huang, Xiaoming ;

Li, Dongmei ;

Luo, Yanhong ;

Meng, Qingbo .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (40) :15903-15905

[14]

Ip AH, 2012, NAT NANOTECHNOL, V7, P577, DOI [10.1038/NNANO.2012.127, 10.1038/nnano.2012.127]

[15]

Johnson B., 2009, J APPL PHYS, P106

[16] Meeting the clean energy demand: Nanostructure architectures for solar energy conversion [J].

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (07) :2834-2860

[17] Beyond Photovoltaics: Semiconductor Nanoarchitectures for Liquid-Junction Solar Cells [J].

Kamat, Prashant V. ;

Tvrdy, Kevin ;

Baker, David R. ;

Radich, James G. .

CHEMICAL REVIEWS, 2010, 110 (11) :6664-6688

[18] Colloidal Quantum Dot Photovoltaics: A Path Forward [J].

Kramer, Illan J. ;

Sargent, Edward H. .

ACS NANO, 2011, 5 (11) :8506-8514

[19] Efficient Synthesis of Highly Luminescent Copper Indium Sulfide-Based Core/Shell Nanocrystals with Surprisingly Long-Lived Emission [J].

Li, Liang ;

Pandey, Anshu ;

Werder, Donald J. ;

Khanal, Bishnu P. ;

Pietryga, Jeffrey M. ;

Klimov, Victor I. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (05) :1176-1179

[20] Solution synthesis of high-quality CuInS2 quantum dots as sensitizers for TiO2 photoelectrodes [J].

Li, Tzung-Luen ;

Teng, Hsisheng .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (18) :3656-3664

← 1 2 3 4 5 →