p-type oxide semiconductors as hole collectors in dye-sensitized solid-state solar cells

被引:95
作者
Bandara, J. [1 ]
Yasomanee, J. P. [1 ]
机构
[1] Inst Fundamental Studies, Kandy, Sri Lanka
关键词
TRANSPARENT THIN-FILMS; PHOTOCURRENT; CONVERSION; DESIGN; DEVICE;
D O I
10.1088/0268-1242/22/2/004
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Oxide semiconductors with p-type conductivity were found to be good candidates to be used as hole collectors in dye sensitized solid-state solar cells (DSSC). In this paper, a delofossite p-type CuAlO2 semiconductor was synthesized by a hydrothermal method and its properties were investigated as a hole collector in DSSC. The valence band (VB) and conduction band ( CB) positions of CuAlO2 were appropriate to be used as the hole conductor in DSSC. Solar cells constructed with TiO2/Ru dye/CuAlO2 deliver I-sc = 0.08 mA cm(-2) and V-oc = 525 mV. The particle size of CuAlO2 prepared by the hydrothermal method was similar to 300-500 nm and the large CuAlO2 particle penetrates weakly into the pores of a nanocrystalline matrix resulting in the weak interaction of the dye and hole collector, which was found to be one of the reasons for the poor solar cell performance of the solar cell constructed with CuAlO2 as the hole collector. Bigger particle size and poor p-type conductivity are found to be the major limiting factors of CuAlO2 as a hole collector. The solar cell performances of electrodes constructed with TiO2/Ru dye/NiO are also discussed.
引用
收藏
页码:20 / 24
页数:5
相关论文
共 33 条
[1]   Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies [J].
Bach, U ;
Lupo, D ;
Comte, P ;
Moser, JE ;
Weissörtel, F ;
Salbeck, J ;
Spreitzer, H ;
Grätzel, M .
NATURE, 1998, 395 (6702) :583-585
[2]   The role of n-p junction electrodes in minimizing the charge recombination and enhancement of photocurrent and photovoltage in dye sensitized solar cells [J].
Bandara, J ;
Pradeep, UW ;
Bandara, RGSJ .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2005, 170 (03) :273-278
[3]   Solid-state dye-sensitized solar cell with p-type NiO as a hole collector [J].
Bandara, J ;
Weerasinghe, H .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2005, 85 (03) :385-390
[4]   Size-dependent optical properties of sputter-deposited nanocrystalline p-type transparent CuAlO2 thin films -: art. no. 084308 [J].
Banerjee, AN ;
Chattopadhyay, KK .
JOURNAL OF APPLIED PHYSICS, 2005, 97 (08)
[5]   Synthesis and characterization of p-type transparent conducting CuAlO2 thin film by DC sputtering [J].
Banerjee, AN ;
Kundoo, S ;
Chattopadhyay, KK .
THIN SOLID FILMS, 2003, 440 (1-2) :5-10
[6]  
Bard A.J., 1980, ELECTROCHEMICAL METH
[7]   CuAlO2 prepared by ion exchange from LiAiO2 [J].
Dloczik, L ;
Tomm, Y ;
Könenkamp, R ;
Lux-Steiner, MC ;
Dittrich, T .
THIN SOLID FILMS, 2004, 451 :116-119
[8]   Preparation of CuAlO2 nanocrystalline transparent thin films with high conductivity [J].
Gao, SM ;
Zhao, Y ;
Gou, PP ;
Chen, N ;
Xie, Y .
NANOTECHNOLOGY, 2003, 14 (05) :538-541
[9]   Dye-sensitized nanostructured p-type nickel oxide film as a photocathode for a solar cell [J].
He, JJ ;
Lindström, H ;
Hagfeldt, A ;
Lindquist, SE .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (42) :8940-8943
[10]   P-type electrical conduction in transparent thin films of CuAlO2 [J].
Kawazoe, H ;
Yasukawa, M ;
Hyodo, H ;
Kurita, M ;
Yanagi, H ;
Hosono, H .
NATURE, 1997, 389 (6654) :939-942