CdS/CdSe Co-Sensitized Solar Cells Based on a New SnO2 Photoanode with a Three-Dimensionally Interconnected Ordered Porous Structure

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• 作者：Junyan Xiao ; Qingli Huang ; Jing Xu ; Chunhui Li ; Guoping Chen ; Yanhong Luo ; Dongmei Li ; Qingbo Meng
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：February 27, 2014
• 年：2014
• 卷：118
• 期：8
• 页码：4007-4015
• 全文大小：541K
• 年卷期：v.118,no.8(February 27, 2014)
• ISSN：1932-7455

文摘

Highly ordered SnO₂ inverse opal films with different thicknesses are prepared by our newly developed doctor-blading technique combined with liquid-phase deposition, which have been applied in CdS/CdSe co-sensitized solar cells for the first time. Up to 4.37% of light-to-electricity conversion efficiency with a high open-circuit photovoltage of 700 mV has been achieved under AM 1.5 (100 mW鈥塩m^鈥?) illumination. A careful comparison of two SnO₂ photoanodes (inverse opal structure and conventional disordered film composed of submicrometer particles) is performed by analysis of optical and photoelectrochemical properties and electrochemical impedance spectra. The comparison reveals that the highly ordered SnO₂ inverse opal structure can effectively reduce the charge recombination and increase the open-circuit photovoltage, fill factor, and cell performance.