Enhancing the performance of dye-sensitized solar cells: doping SnO2 photoanodes with Al to simultaneously improve conduction band and electron lifetime

被引：51

作者：

Duan, Yandong ^{[1
,2
]}

Zheng, Jiaxin ^{[1
]}

Fu, Nianqing ^{[2
,3
]}

Fang, Yanyan ^{[2
]}

Liu, Tongchao ^{[1
]}

Zhang, Qian ^{[4
]}

Zhou, Xiaowen ^{[2
]}

Lin, Yuan ^{[1
,2
]}

Pan, Feng ^{[1
]}

机构：

[1] Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Photochem, Beijing 100190, Peoples R China

[3] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[4] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 06期

基金：

中国国家自然科学基金;

关键词：

TOTAL-ENERGY CALCULATIONS; HIGHLY EFFICIENT; HOLLOW MICROSPHERES; SOLID-STATE; SURFACE MODIFICATION; TIO2; CONVERSION; DIFFUSION; INJECTION; NB2O5;

D O I：

10.1039/c4ta05923a

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：

SnO2 is an important alternative to TiO2 for use as a semiconductor in dye-sensitized solar cell (DSSC) photoanodes. In this work, we prepared SnO2 and Al-doped SnO2 nanocrystals via a simple hydrothermal method, and found for the first time that the tuning of the conduction band and suppression of charge recombination are simultaneously improved in the Al-doped samples. The electron lifetime is significantly improved and the conduction band edge is shifted negatively by doping the SnO2 photoanode with Al. Compared to the undoped SnO2 DSSCs (AM 1.5, 100 mW cm(-2)), the power conversion efficiency (eta) of the optimized Al-doped SnO2 DSSCs is enhanced by 75%. After being treated with TiCl4, the highest eta of DSSCs based on Al-doped SnO2 nanocrystals is approximately 6.91%, which is a high overall photoconversion efficiency for SnO2-based DSSCs.

引用

页码：3066 / 3073

页数：8

共 71 条

[1] SPECTROSCOPIC PROPERTIES OF SEMICONDUCTOR CRYSTALS WITH DIRECT FORBIDDEN ENERGY-GAP [J].

AGEKYAN, VT .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 43 (01) :11-42

[2] Hierarchical Double-Shell Nanostructures of TiO2 Nanosheets on SnO2 Hollow Spheres for High-Efficiency, Solid-State, Dye-Sensitized Solar Cells [J].

Ahn, Sung Hoon ;

Kim, Dong Jun ;

Chi, Won Seok ;

Kim, Jong Hak .

ADVANCED FUNCTIONAL MATERIALS, 2014, 24 (32) :5037-5044

[3] Field-effect transistors based on single semiconducting oxide nanobelts [J].

Arnold, MS ;

Avouris, P ;

Pan, ZW ;

Wang, ZL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (03) :659-663

[4] Microwave synthesis of size-controllable SnO2 nanocrystals for dye-sensitized solar cells [J].

Asdim ;

Manseki, Kazuhiro ;

Sugiura, Takashi ;

Yoshida, Tsukasa .

NEW JOURNAL OF CHEMISTRY, 2014, 38 (02) :598-603

[5] Antimony-Doped Tin Oxide Aerogels as Porous Electron Collectors for Dye-Sensitized Solar Cells [J].

Baena, Juan Pablo Correa ;

Agrios, Alexander G. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (30) :17028-17035

[6] Electron Injection Efficiency and Diffusion Length in Dye-Sensitized Solar Cells Derived from Incident Photon Conversion Efficiency Measurements [J].

Barnes, Piers R. F. ;

Anderson, Assaf Y. ;

Koops, Sara E. ;

Durrant, James R. ;

O'Regan, Brian C. .

Journal of Physical Chemistry C, 2009, 113 (03) :1126-1136

[7] Highly efficient and stable dye-sensitized solar cells based on SnO2 nanocrystals prepared by microwave-assisted synthesis [J].

Birkel, Alexander ;

Lee, Yong-Gun ;

Koll, Dominik ;

Van Meerbeek, Xavier ;

Frank, Stefan ;

Choi, Mi Jin ;

Kang, Yong Soo ;

Char, Kookheon ;

Tremel, Wolfgang .

ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (01) :5392-5400

[8] PROJECTOR AUGMENTED-WAVE METHOD [J].

BLOCHL, PE .

PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979

[9] Hydrophobic, highly conductive ambient-temperature molten salts [J].

Bonhote, P ;

Dias, AP ;

Papageorgiou, N ;

Kalyanasundaram, K ;

Gratzel, M .

INORGANIC CHEMISTRY, 1996, 35 (05) :1168-1178

[10] High-Efficiency Dye-Sensitized Solar Cells Based on the Composite Photoanocles of SnO2 Nanoparticles/ZnO Nanotetrapods [J].

Chen, Wei ;

Qiu, Yongcai ;

Zhong, Yongchun ;

Wong, Kam Sing ;

Yang, Shihe .

JOURNAL OF PHYSICAL CHEMISTRY A, 2010, 114 (09) :3127-3138

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