SnO<sub>2</sub> nanosheet as a photoanode interfacial layer for dye-sensitized solar cells

Feng-shi Cai; Jing Wang; Zhi-hao Yuan; Yue-qin Duan

doi:10.1007/s11801-011-1025-8

Optoelectronics Letters ›› 2011, Vol. 7 ›› Issue (5) : 321-324. DOI: 10.1007/s11801-011-1025-8

Article

SnO₂ nanosheet as a photoanode interfacial layer for dye-sensitized solar cells

Feng-shi Cai¹^,²^,³^,^a ,
Jing Wang¹^,² ,
Zhi-hao Yuan¹^,²^,³ ,
Yue-qin Duan¹^,²

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Abstract

SnO₂ nanosheet films about 200 nm in thickness are successfully fabricated on fluorine-doped tin oxide (FTO) glass by a facile solution-grown approach. The prepared SnO₂ nanosheet film is applied as an interfacial layer between the nanocrystalline TiO₂ film and the FTO substrate in dye-sensitized solar cells (DSCs). Experimental results show that the introduction of a SnO₂ nanosheet film not only suppresses the electron back-transport reaction at the electrolyte/FTO interface but also provides an efficient electron transition channel along the SnO₂ nanosheets, and as a result, increasing the open circuit voltage and short current density, and finally improving the conversion efficiency for the DSCs from 3.89% to 4.62%.

Keywords

SnO2 Nanosheet / Short Current Density / Nanosheet Film / Nanosheet Layer / Propylimidazolium Iodide

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Feng-shi Cai, Jing Wang, Zhi-hao Yuan, Yue-qin Duan. SnO₂ nanosheet as a photoanode interfacial layer for dye-sensitized solar cells. Optoelectronics Letters, 2011, 7(5): 321‒324 https://doi.org/10.1007/s11801-011-1025-8

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This work has been supported by the National Natural Science Foundation of China (Nos.20903073 and 20671070), the Key Project of Education Ministry of China (No.207008), the Natural Science Foundation of Tianjin (No.09JCYBJC07000), and the Science and Technology Developing Foundation for Tianjin Universities (No.20080309).