Spin-coating of Graphene Oxide as Counter Electrode for Dye-sensitized Solar Cells in Various Dispersing Solvents

IF 3.1 4区 医学 Q2 BIOPHYSICS
T. Wu, Wei-Ming Huang, Yu-Chi Tsao, J. Tsai
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引用次数: 0

Abstract

Platinum (Pt) is the most commonly used counter electrode material for DSSCs. However, as Pt is a noble metal and expensive, researchers have tried to replace the Pt counter electrode with a variety of materials. In this study, graphene oxide (GO) powders were added to solvents of different polarities as precursor solutions for the counter electrode. The solvents were deionized water, dimethylformamide, isopropanol, and chlorobenzene in descending order of polarity. The prepared GO precursor solutions were coated on the Florine doped Tin Oxide (FTO) glass substrate via spin coating, then coated substrate subjected to thermal reduction reaction to obtain reduced graphene oxide, which was used as the counter electrode of the DSSC. The photoelectric conversion efficiency (PCE) of DSSC using deionized water as the dispersing solvent was 2.70%, which was five times higher than that of DSSC using chlorobenzene.
不同分散溶剂中氧化石墨烯对电极染料敏化太阳能电池的自旋镀膜
铂(Pt)是DSSCs最常用的对电极材料。然而,由于Pt是一种昂贵的贵金属,研究人员试图用各种材料代替Pt对电极。在这项研究中,氧化石墨烯(GO)粉末被添加到不同极性的溶剂中作为对电极的前驱体溶液。溶剂极性由高到低依次为去离子水、二甲基甲酰胺、异丙醇和氯苯。将制备好的氧化石墨烯前驱体溶液通过自旋涂层涂覆在氟掺杂氧化锡(FTO)玻璃基板上,再对基板进行热还原反应得到还原氧化石墨烯,作为DSSC的对电极。以去离子水为分散溶剂的DSSC的光电转换效率(PCE)为2.70%,比以氯苯为分散溶剂的DSSC提高了5倍。
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来源期刊
Journal of Applied Biomaterials & Functional Materials
Journal of Applied Biomaterials & Functional Materials BIOPHYSICS-ENGINEERING, BIOMEDICAL
CiteScore
4.40
自引率
4.00%
发文量
36
审稿时长
>12 weeks
期刊介绍: The Journal of Applied Biomaterials & Functional Materials (JABFM) is an open access, peer-reviewed, international journal considering the publication of original contributions, reviews and editorials dealing with clinical and laboratory investigations in the fast growing field of biomaterial sciences and functional materials. The areas covered by the journal will include: • Biomaterials / Materials for biomedical applications • Functional materials • Hybrid and composite materials • Soft materials • Hydrogels • Nanomaterials • Gene delivery • Nonodevices • Metamaterials • Active coatings • Surface functionalization • Tissue engineering • Cell delivery/cell encapsulation systems • 3D printing materials • Material characterization • Biomechanics
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