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

基本信息

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

项目摘要

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.

二氧化钛用于光催化剂和染料敏化太阳能电池（DSSC）。在包含硝酸氧钛的液相中开发了一种新的二氧化钛薄膜涂层技术。二氧化钛薄膜的应用主要研究在 DSSC 中。为了获得最佳的电池性能，有必要优化二氧化钛等光敏材料和透明导电氧化物（TCO）之间的界面。在本报告中，采用掺氟二氧化锡（FTO）薄膜作为TCO薄膜。通过使用具有不同优选晶向的多晶FTO薄膜讨论了界面的许多问题。在这些 FTO 薄膜上制备了致密的二氧化钛薄膜，并通过 SIMS 分析阐明了界面中氟和氯浓度的分布。具有这些接口的 DSSC 的性能在 AM1.5 和 100mW/cm2 上进行了估计。在界面分析的基础上，发现 FTO 薄膜需要不含间隙位点的过量氯和极其优选的晶体取向。此外，在具有高表面粗糙度的纹理玻璃基板上制造FTO薄膜和具有FTO中间层的串联型电池以增强电池性能。研究发现，液相沉积是将致密二氧化钛薄膜贴合到较高粗糙度表面的有用方法之一。 DSSC 的漏电流因致密薄膜的沉积而降低。液相沉积是非常有用的技术。