Enhanced Conversion Efficiency of Dye-Sensitized Solar Cells by Optimization of Photoanode Modification Process

被引：1

作者：

Kim, Jong Tae ^{[1
]}

Kang, Cheon Su ^{[2
]}

Han, Yoon Soo ^{[3
]}

机构：

[1] DGIST, Green Energy Res Div, Taegu 711873, South Korea

[2] Kyungpook Natl Univ, Dept Elect Engn & Comp Sci, Taegu 702701, South Korea

[3] Catholic Univ Daegu, Dept Adv Energy Mat Sci & Engn, Gyeongbuk 712702, South Korea

来源：

JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS | 2013年 / 8卷 / 06期

关键词：

Surface Modification; TiO2; Photoanode; LiOH; Dye-Sensitized Solar Cell; SHELL NANOPOROUS ELECTRODE; BAND-EDGE MOVEMENT; NANOCRYSTALLINE TIO2; ENERGY-CONVERSION; PERFORMANCE; FILMS; STATE; RECOMBINATION; PHOTOVOLTAGE; CORE;

D O I：

10.1166/jno.2013.1518

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：

Surface modification of nanoporous TiO2 photoanodes was conducted by simple dipping process using aqueous lithium hydroxide (LiOH) solution at varied temperatures and dipping time, and the modified photoanodes were applied to dye-sensitized solar cells (DSSCs). By the optimization of surface-modification temperature (40 degrees C) and time (10 min), DSSC with LiOH-modified TiO2 layer showed a considerable improvement (8.19%) of about 20% in power conversion efficiency due to an enhanced open circuit voltage and a fill factor, compared to that (6.85%) of reference device with bare TiO2 layer. The enhancement was mainly attributed to negative shifts of conduction band edges of TiO2 by LiOH modification.

引用

页码：519 / 524

页数：6

共 24 条

[1] Dye-sensitized solar cells based on nanocrystalline TiO2 films surface treated with Al3+ ions:: Photovoltage and electron transport studies
Alarcón, H
Boschloo, G
Mendoza, P
Solis, JL
Hagfeldt, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (39) : 18483 - 18490
[2] Modification of nanostructured TiO2 electrodes by electrochemical Al3+ insertion:: Effects on dye-sensitized solar cell performance
Alarcon, Hugo
Hedlund, Maria
Johansson, Erik M. J.
Rensmo, Hakan
Hagfeldt, Anders
Boschloo, Gerrit
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (35) : 13267 - 13274
[3] Tuning of the flat-band potentials of nanocrystalline TiO2 and SnO2 particles with an outer-shell MgO layer
Bandara, J.
Pradeep, U. W.
[J]. THIN SOLID FILMS, 2008, 517 (02) : 952 - 956
[4] Physical chemical principles of photovoltaic conversion with nanoparticulate, mesoporous dye-sensitized solar cells
Bisquert, J
Cahen, D
Hodes, G
Rühle, S
Zaban, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (24) : 8106 - 8118
[5] Characterization of titanium dioxide blocking layers in dye-sensitized nanocrystalline solar cells
Cameron, PJ
Peter, LM
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (51) : 14394 - 14400
[6] Preparation of Nb2O5 coated TiO2 nanoporous electrodes and their application in dye-sensitized solar cells
Chen, SG
Chappel, S
Diamant, Y
Zaban, A
[J]. CHEMISTRY OF MATERIALS, 2001, 13 (12) : 4629 - 4634
[7] Core-shell nanoporous electrode for dye sensitized solar cells:: the effect of the SrTiO3 shell on the electronic properties of the TiO2 core
Diamant, Y
Chen, SG
Melamed, O
Zaban, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (09) : 1977 - 1981
[8] Core-shell nanoporous electrode for dye sensitized solar cells: the effect of shell characteristics on the electronic properties of the electrode
Diamant, Y
Chappel, S
Chen, SG
Melamed, O
Zaban, A
[J]. COORDINATION CHEMISTRY REVIEWS, 2004, 248 (13-14) : 1271 - 1276
[9] Solar energy conversion by dye-sensitized photovoltaic cells
Grätzel, M
[J]. INORGANIC CHEMISTRY, 2005, 44 (20) : 6841 - 6851
[10] Molecular photovoltaics
Hagfeldt, A
Grätzel, M
[J]. ACCOUNTS OF CHEMICAL RESEARCH, 2000, 33 (05) : 269 - 277

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