Mesoscopic nitrogen-doped TiO2 spheres for quantum dot-sensitized solar cells

被引：43
作者：
Shu, Ting [1 ]
Xiang, Peng [1 ]
Zhou, Zi-Ming [1 ]
Wang, Heng [1 ]
Liu, Guang-Hui [1 ]
Han, Hong-Wei [1 ]
Zhao, Yuan-Di [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2012年 / 68卷
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
TiO2; Spheres; Nitrogen-doped; Quantum dot-sensitized solar cell; ELECTRON-DIFFUSION; CHARGE-TRANSPORT; RECOMBINATION; CDSE; SIZE; IMPEDANCE; BEADS; FILM;
D O I：
10.1016/j.electacta.2012.02.068
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The photovoltaic performance of quantum dot-sensitized solar cell (QDSSC) based on mesoscopic nitrogen-doped TiO2 spheres prepared by solvothermal method was investigated. The results indicate that CdSexS(1-x)/CdSe QDSSC based on this mesoscopic nitrogen-doped TiO2 spheres shows an energy conversion efficiency of 3.67%, which is higher than that of the undoped TiO2 spheres (2.14%). The electrochemical impedance spectroscopy shows retards charge recombination is occurred on nitrogen-doped TiO2 spheres photoanode. The improvement of the photovoltaic performance of QDSSC could be attributed to the retarding charge recombination, the acceleration of the transfer rate of electrons, higher quantum dots loading and enhanced light scattering in the N-doped TiO2 spheres film. A higher photovoltaic performance could be expected for other QDSSC with this N-doped TiO2 sphere material. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：166 / 171
页数：6
相关论文
共 33 条
  • [1] Quantum Dot Sensitized Solar Cells. A Tale of Two Semiconductor Nanocrystals: CdSe and CdTe
    Bang, Jin Ho
    Kamat, Prashant V.
    [J]. ACS NANO, 2009, 3 (06) : 1467 - 1476
  • [2] Bisquert J, 2002, J PHYS CHEM B, V106, P325, DOI 10.1021/jp01194lg
  • [3] Doubling exponent models for the analysis of porous film electrodes by impedance.: Relaxation of TiO2 nanoporous in aqueous solution
    Bisquert, J
    Garcia-Belmonte, G
    Fabregat-Santiago, F
    Ferriols, NS
    Bogdanoff, P
    Pereira, EC
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (10) : 2287 - 2298
  • [4] Mesoporous Anatase TiO2 Beads with High Surface Areas and Controllable Pore Sizes: A Superior Candidate for High-Performance Dye-Sensitized Solar Cells
    Chen, Dehong
    Huang, Fuzhi
    Cheng, Yi-Bing
    Caruso, Rachel A.
    [J]. ADVANCED MATERIALS, 2009, 21 (21) : 2206 - +
  • [5] Tantalum-Doped Titanium Dioxide Nanowire Arrays for Dye-Sensitized Solar Cells with High Open-Circuit Voltage
    Feng, Xinjian
    Shankar, Karthik
    Paulose, Maggie
    Grimes, Craig A.
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (43) : 8095 - 8098
  • [6] CdSe Quantum-Dot-Sensitized Solar Cell with ∼100% Internal Quantum Efficiency
    Fuke, Nobuhiro
    Hoch, Laura B.
    Koposov, Alexey Y.
    Manner, Virginia W.
    Werder, Donald J.
    Fukui, Atsushi
    Koide, Naoki
    Katayama, Hiroyuki
    Sykora, Milan
    [J]. ACS NANO, 2010, 4 (11) : 6377 - 6386
  • [7] QUANTUM-SIZE EFFECTS IN THE STUDY OF CHEMICAL SOLUTION DEPOSITION MECHANISMS OF SEMICONDUCTOR-FILMS
    GORER, S
    HODES, G
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (20) : 5338 - 5346
  • [8] Photoelectrochemical cells
    Grätzel, M
    [J]. NATURE, 2001, 414 (6861) : 338 - 344
  • [9] Influence of nitrogen dopants on N-doped TiO2 electrodes and their applications in dye-sensitized solar cells
    Guo, Wei
    Shen, Yihua
    Boschloo, Gerrit
    Hagfeldt, Anders
    Ma, Tingli
    [J]. ELECTROCHIMICA ACTA, 2011, 56 (12) : 4611 - 4617
  • [10] Solar conversion efficiency of photovoltaic and photoelectrolysis cells with carrier multiplication absorbers
    Hanna, M. C.
    Nozik, A. J.
    [J]. JOURNAL OF APPLIED PHYSICS, 2006, 100 (07)
1234