期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 112, 期 33, 页码 13037-13042出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp803726c
关键词
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资金
- National Basic Research Program of China [2007CB613301]
- National Science Foundation of China [20503009, 20777026]
- Program for New Century Excellent Talents in University [NCET-07-0352]
- Ministry of Education of China [108097]
FeS and FeS2 nanosheet films were selectively synthesized on iron substrates through one-step hydrothermal treatment of iron foil and sulfur powder in the presence or absence of hydrazine. The resulting FeSx (x = 1, 2) nanosheet films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) and used as novel photocathodes in tandem solar cells with dye-sensitized TiO2 nanorod films as the corresponding photoanode. The photovoltaic properties of the tandem dye-sensitized solar cells were carefully studied. We found that the performance of the FeS nanosheet film photocathode was better than that of the FeS2 one in the tandem dye-sensitized solar cells. In the case of the FeS nanosheet film photocathode, a short circuit photocurrent (I-sc) of 2.53 mA/cm(2), an open circuit photovoltage (V-oc) of 0.60 V, a fill factor (FF) of 0.31, and conversion efficiency (eta) of 1.32% were obtained under an illumination of 100 mW/cm(2). This study suggests that these iron sulfide nanosheet films are attractive photocathodes for tandem dye-sensitized solar cells.
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