Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells

被引：27

作者：

Liu, Tingliang ^{[1
]}

Zhang, Xing ^{[1
]}

Zhang, Jingquan ^{[1
]}

Wang, Wenwu ^{[1
]}

Feng, Lianghuan ^{[1
]}

Wu, Lili ^{[1
]}

Li, Wei ^{[1
]}

Zeng, Guanggen ^{[1
]}

Li, Bing ^{[1
]}

机构：

[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China

来源：

INTERNATIONAL JOURNAL OF PHOTOENERGY | 2013年 / 2013卷

关键词：

BAND ALIGNMENT;

D O I：

10.1155/2013/765938

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：

Transparent ITO/ZnO and ITO/SnO2 complex conductive layers were prepared by DC- and RF-magnetron sputtering. Their structure and optical and electronic performances were studied by XRD, UV/Vis Spectroscopy, and four-probe technology. The interface characteristic and band offset of the ITO/ZnO, ITO/SnO2, and ITO/CdS were investigated by Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray Photoelectron Spectroscopy (XPS), and the energy band diagrams have also been determined. The results show that ITO/ZnO and ITO/SnO2 films have good optical and electrical properties.. e energy barrier those at the interface of ITO/ZnO and ITO/SnO2 layers are almost 0.4 and 0.44 eV, which are lower than in ITO/CdS heterojunctions (0.9 eV), which is beneficial for the transfer and collection of electrons in CdTe solar cells and reduces the minority carrier recombination at the interface, compared to CdS/ITO. The effects of their use in CdTe solar cells were studied by AMPS-1D so. ware simulation using experiment values obtained from ZnO, ITO, and SnO2. From the simulation, we confirmed the increase of E-ff, FF, V-oc, and I-sc by the introduction of ITO/ZnO and ITO/SnO2 layers in CdTe solar cells.

引用

页数：8

共 17 条

[1] Band alignment at the interface of a SnO2/gamma-In2Se3 heterojunction [J].

Bernede, JC ;

Marsillac, S .

MATERIALS RESEARCH BULLETIN, 1997, 32 (09) :1193-1200

[2] Numerical simulation of CuInxGa1-xSe2 solar cells by AMPS-1D [J].

Bouloufa, A. ;

Djessas, K. ;

Zegadi, A. .

THIN SOLID FILMS, 2007, 515 (15) :6285-6287

[3] Thin-film solar cells: An overview [J].

Chopra, KL ;

Paulson, PD ;

Dutta, V .

PROGRESS IN PHOTOVOLTAICS, 2004, 12 (2-3) :69-92

[4] Optimization of CBD CdS process in high-efficiency Cu(In,Ga)Se2-based solar cells [J].

Contreras, MA ;

Romero, MJ ;

Hasoon, BTE ;

Noufi, R ;

Ward, S ;

Ramanathan, K .

THIN SOLID FILMS, 2002, 403 :204-211

[5] Achievements and Challenges of CdS/CdTe Solar Cells [J].

Fang, Zhou ;

Wang, Xiao Chen ;

wu, Hong Cai ;

Zhao, Ce Zhou .

INTERNATIONAL JOURNAL OF PHOTOENERGY, 2011, 2011

[6] Transparent conductors and buffer layers for CdTe solar cells [J].

Ferekides, CS ;

Mamazza, R ;

Balasubramanian, U ;

Morel, DL .

THIN SOLID FILMS, 2005, 480 :224-229

[7] High efficiency CSSCdTe solar cells [J].

Ferekides, CS ;

Marinskiy, D ;

Viswanathan, V ;

Tetali, B ;

Palekis, V ;

Selvaraj, P ;

Morel, DL .

THIN SOLID FILMS, 2000, 361 (361) :520-526

[8]

Fonash Stephen., 1981, Solar cell device physics

[9] Photovoltaic windows by chemical bath deposition [J].

Herrero, J ;

Gutiérrez, MT ;

Guillén, C ;

Doña, JM ;

Martínez, MA ;

Chaparro, AM ;

Bayón, R .

THIN SOLID FILMS, 2000, 361 :28-33

[10] Photoemission studies of barrier heights in metal-semiconductor interfaces and heterojunctions [J].

Horn, K .

APPLIED SURFACE SCIENCE, 2000, 166 (1-4) :1-11

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