Process Controls of Sol-Gel Methods and Preparation of Functional Films Using Organic-Inorganic Hybrids

1)枞酸衍生物对PZT溶胶性能及铁电薄膜制备的影响研究发现，某些枞酸衍生物对PZT溶胶的凝胶化有抑制作用。利用该效果，获得了适合于丝网印刷的浆料。采用丝网印刷法制备了PZT薄膜，并对其电学性能进行了研究。PZT薄膜的铁电性能与PZT溶胶的组成和加热温度有关。2）化学改性剂和有机聚合物对凝胶薄膜结构的控制研究了溶胶-凝胶法制备TiO_2薄膜的工艺条件对薄膜性能的影响。薄膜的形貌随有机添加剂的种类而变化。利用大比表面积的TiO_2薄膜提高了染料敏化太阳能电池的光电性能。3）甲基丙烯酸化学改性的杂化凝胶薄膜的光敏性研究发现，用β-二酮和甲基丙烯酸改性的锆醇盐得到的光敏凝胶薄膜比不加甲基丙烯酸的凝胶薄膜厚。4）金属氧化物衍生的凝胶薄膜的微观结构研究用双光束干涉法在β-二酮修饰的ZrO_2凝胶膜上制备了二维表面浮雕光栅，并对光栅的表面形貌和浮雕效应进行了表征。光栅的形貌随激光照射时间、浸出条件等的变化而变化，在石英玻璃基片上形成岛状二维光栅，在1.3 ~ 2.6 μm波长范围内显著降低了其表面的反射。

1) Effects of Abietic Acid Derivatives on Properties of PZT Sols and Preparation of Ferroelectric FilmsIt has been found that some Abietic acid derivatives depress gelation of PZT sols. Utilizing the effect, pasts suited for the screen printing were obtained. PZT films were fabricated by the screen printing and their electrical properties were studied. The ferroelectric properties of the PZT films have been found to depend on the composition of the PZT sol and the heating temperature.2) Structual Controls of Gel Films by Addition of Chemical Modification Reagents and Organic PolymersWe investigated the effect of preparation conditions for TiO_2 films by the sol-gel method on the properties of the film. The morphology of the films changed with the kind of organic additives. Photoelectric properties of dye-sensitized solar cells were improved by the use of TiO_2 films having large surface areas.3) Photosensitivities of Hybrid Gel Films Chemically-Modified with Methacrylic AcidIt has been found that the photosensitive gel films obtained from Zr-alkoxide modified with β-diketone and methacrylic acid can be thicker than the gel films without methacrylic acid.4) Micro-Structures of Gel Films Derived from Metal-Alkoxides modified with β-DiketonesTwo-dimensional (2D) surface-relief gratings were fabricated by the two-beam interference method on photosensitive ZrO_2 gel films, which are derived from Zr-alkoxides modified with β-diketones, and characterized with respect to surface morphology and antireflection effect. The morphology of the gratings changed with irradiation time of laser, leaching conditions and so on. The formation of 2D-grating of island type on a silica glass substrate substantially reduced the reflection at its surface in a wavelength range of 1.3 to 2.6 μm.