Efficiency Enhancement of ZnO Dye-sensitized Solar Cells by Modifying Photoelectrode and Counterelectrode

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• 作者：Kritsada Hongsith^a ; ^b ; Niyom Hongsith^b ; ^c ; Duangmanee Wongratanaphisan^a ; ^b ; Atcharawon Gardchareon^a ; ^b ; Surachet Phadungdhitidhada^a ; ^b ; Supab Choopun^a ; ^b ; ^{supab99@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Dye-sensitized solar cells ; ZnO ; Platinum ; Nanoparticles ; Sparking technique
• 刊名：Energy Procedia
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：79
• 期：Complete
• 页码：360-365
• 全文大小：850 K

文摘

In this research, ZnO photoelectrode and Platinum counterelectrode in dye-sensitized solar cells (DSSCs) were modified by sparking technique and investigated photoconversion properties. The ZnO photoelectrode was adjusted by using double-layered technique. Here, the DSSC structures were FTO/double-layered ZnO/N719/electrolyte/Pt counterelectrode. The efficiency characteristics for DSSCs were measured under illumination of simulated sunlight with the radiant power of 100 mW/cm². It was found that the best results of DSSCs were observed with power conversion efficiency of 2.53% at 250 sparking cycles for ZnO nanopowder over-layered which was significantly higher than 1.83% of the reference cell. The efficiency enhancement can be explained by the arising of short-circuit photocurrent due to increasing of light scattering and dye adsorption for double-layered photoelectrode and the increasing of the active surface area of Platinum nanoparticles in counterelectrode.