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Catalytic platinum layers for dye solar cells: A comparative study

机译：染料太阳能电池的催化铂层：比较研究

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摘要

Comparative investigations concerning the preparation and characterization of zerovalent platinum nanoparticles to be used as precursors for dye-sensitized solar cells (DSSCs) have been carried out. Pt nanopowders were prepared via triorganohydroborate reduction, polyol method, hydrogen reduction, and thermal decomposition of complex compounds. The powders resulting from the various sources were then immobilized on support. Subsequently, the size and crystalline structure of the particles were examined using Transmission Electron Microscopy (TEM), X-Ray diffraction (XRD). The metallic state of the platinum surface- and core-atoms were studied by X-Ray Photoelectron Spectroscopy (XPS) and X-Ray Absorption Near Edge Structure (XANES) analysis. The platinum nanoparticles resulting from the various preparation pathways were each incorporated in a printable platinum paste and then printed on transparent conductive (TCO) glass. After thermal treatment (at 630℃) the electrochemical performance of the different platinum layers obtained in this study was compared applying impedance spectroscopy. The charge transfer resistance was best observed for the catalyst prepared by the hydrogen reduction method.
机译：已经进行了有关零价铂纳米粒子的制备和表征的比较研究，该零价铂纳米粒子将用作染料敏化太阳能电池（DSSC）的前体。 Pt纳米粉是通过硼氢化三有机硼酸酯还原，多元醇法，氢还原和复杂化合物的热分解制备的。然后将来自各种来源的粉末固定在载体上。随后，使用透射电子显微镜（TEM），X射线衍射（XRD）检查颗粒的尺寸和晶体结构。通过X射线光电子能谱（XPS）和X射线吸收近边缘结构（XANES）分析研究了铂表面原子和核心原子的金属状态。将来自各种制备途径的铂纳米颗粒分别掺入可印刷的铂糊中，然后印刷在透明导电（TCO）玻璃上。经过热处理（630℃）后，采用阻抗谱法比较了本研究中获得的不同铂层的电化学性能。对于通过氢还原法制备的催化剂，电荷转移阻力最佳。

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