苯氟酮和茜素在染料敏化太阳能电池中的无金属敏化剂作用

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-05-10 DOI:10.1016/j.mseb.2025.118390

Ewelina Krawczak , Agata Zdyb , Marcin Łapiński , Agnieszka Nosal-Wiercińska , Grzegorz Gazdowicz

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引用次数: 0

摘要

将茜素和苯基氟酮无金属染料吸附在TiO2纳米颗粒表面，构成光阳极的介孔涂层，作为染料敏化太阳能电池（DSSC）的敏化剂。由于吸附作用，光吸收范围扩大到600 nm，光收集效率超过65%。利用x射线光发射光谱（XPS）和x射线吸收光谱（XAS）研究了敏化前后TiO2纳米粒子表面的化学状态，结果表明，TiO2纳米粒子表面以Ti-Ti键为主，呈连续晶体结构。研究了傅里叶变换红外光谱（FTIR）测量的条带位置与吸附过程相关的变化。电化学阻抗谱（EIS）测定的电池内阻较低，与苯基荧光酮的良好光伏参数一致。光电池的老化和后反射层的引入提高了它们的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Phenylfluorone and alizarin as metal-free sensitizers in dye sensitized solar cells

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Phenylfluorone and alizarin as metal-free sensitizers in dye sensitized solar cells

The alizarin and phenylfluorone metal-free dyes were adsorbed on the surface of TiO₂ nanoparticles constituting mesoporous coating of the photoanode, and acted as sensitizers in dye-sensitized solar cells (DSSC). Due to adsorption, the light absorption was extended to 600 nm and light harvesting efficiency exceeded 65 %. The chemical state of the surface of TiO₂ nanoparticles was investigated before and after sensitization by X-ray photoemission spectroscopy (XPS) and X-ray absorption spectroscopy (XAS), showing that Ti-Ti bonds dominate and continuous crystalline structure is present up to the surface. The positions of bands measured by Fourier transform infrared spectroscopy (FTIR) was studied in the context of changes linked to the adsorption process. Better photovoltaic parameters for phenylfluorone are consistent with lower internal resistance of the cells determined by electrochemical impedance spectroscopy (EIS). Ageing of the photocells and introduction of a back reflective layer improved their performance.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.