Synthesis of TiO2/WO3/MnO2 Composites and High-Throughput Screening for Their Photoelectrical Properties

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• 作者：Zhijun Zou ; Yuan Liu ; Huayao Li ; Yichuan Liao ; Changsheng Xie
• 刊名：Journal of Combinatorial Chemistry
• 出版年：2010
• 出版时间：May 10, 2010
• 年：2010
• 卷：12
• 期：3
• 页码：363-369
• 全文大小：250K
• 年卷期：v.12,no.3(May 10, 2010)
• ISSN：1520-4774

文摘

On the basis of the idea of equilateral ingredient triangle, a material library of the TiO₂/WO₃/MnO₂ composite material system was designed, which consisted of 66 ingredient points. Each point in the library corresponded with a device. To fabricate the device, the technology of screen printing was used. The pastes which were suitable for this technology were prepared by ball milling. After we printed the pastes onto the alumina substrate which had been preprinted with Au interdigital electrodes, these printed samples were sintered at 550 °C for 2 h in air. The photocurrent of each device under different light sources was measured respectively using a high-throughput screening system. The largest photocurrent was observed when the mole ratio of TiO₂/WO₃ was 2/8 in the composite system. X-ray diffraction (XRD) was used to investigate the phase structure of the powder which had excellent photoelectric response.