Photo functional metal oxide porous films with enhanced performance and a low cost film fabrication

具有增强性能和低成本薄膜制造的光功能金属氧化物多孔薄膜

• 批准号: 17560286
• 负责人: SHIRATSUCHI Ryuichi
• 金额: $ 2.44万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560286/
• 关键词: dye sensitized solar cells; photo catalyst; transparent conductive oxide; SIMS; liquid phase deposition; titanium dioxide; fluorine doped tin dioxide; CVD; ナノ微粒子; 酸化スズ; 燃料電池

Titanium dioxide was applied for photocatalyst and dye sensitized solar cells (DSSCs). A new coating technique of titanium dioxide thin films was developed in a liquid phase included titanyl nitrate. Applications of the titanium dioxide thin films are mainly studied for DSSCs. In order to lead to best cell performance, it is necessary to optimize the interface between photo sensitive materials such as titanium dioxide and transparent conductive oxides (TCO). In this report, fluorine doped tin dioxide(FTO)films were employed as the TCO films. Many problems of the interface were discussed by using polycrystalline FTO films with different preferred crystalline orientations. The compact titanium dioxide films were prepared on these FTO films, and profiles of fluorine and chlorine concentration in the interface were elucidated by SIMS analyses. The performance of DSSCs with these interfaces was estimated on AM1.5 and 100mW/cm2. On the basis of the interface analyses, it was found that the FTO films needed to be free of excess chlorine of interstitial sites and extremely preferred crystalline orientations. Moreover, FTO films on texture glass substrates with high surface roughness and tandem type cells with FTO middle layer were fabricated for enhanced cell performance. It was found that the liquid phase deposition was one of useful methods to fit the compact titanium dioxide films to the higher roughness surfaces. The leaked currents of the DSSCs were depressed as a result of the deposition of the compact films. The liquid phase deposition is very useful technique.

二氧化钛被应用于光催化剂和染料敏化太阳能电池（DSSC）。提出了一种在含有硝酸氧钛的液相中制备二氧化钛薄膜的新方法。二氧化钛薄膜的应用研究主要集中在DSSC上。为了获得最佳的电池性能，有必要优化光敏材料如二氧化钛和透明导电氧化物（TCO）之间的界面。在本报告中，采用氟掺杂二氧化锡（FTO）薄膜作为TCO薄膜。用不同择优取向的多晶FTO薄膜讨论了界面的许多问题。在FTO薄膜上制备了致密的二氧化钛薄膜，并通过西姆斯分析阐明了界面处氟和氯的浓度分布。具有这些接口的DSSC的性能在AM 1.5和100 mW/cm 2下被估计。在界面分析的基础上，发现FTO膜需要不含间隙位的过量氯和非常优选的结晶取向。此外，FTO薄膜的纹理玻璃基板上具有高的表面粗糙度和串联型电池与FTO中间层，以提高电池的性能。结果表明，液相沉积是一种有效的方法，以适应致密的二氧化钛薄膜的高粗糙度的表面。由于致密薄膜的沉积，DSSC的漏电流被抑制。液相沉积是一种非常有用的技术。