采用溶胶－凝胶法制备出ＴｉＯ２纳米晶胶体，通过丝网印刷技术直接在导电玻璃基底上制成胶体膜，经烧结处理得到海绵状的厚约１０μｍ纳米晶ＴｉＯ２膜．由于该膜的纳米结构和多孔性使其表面积比密实平整的膜高１０００倍左右．基于纳米晶体ＴｉＯ２半导体多孔膜和具有卓越光性能的有机染料光敏化剂，一种低成本、高效率的新型的太阳能电池应运而生 TiO2 nanocrystalline colloids were prepared by sol-gel method. Colloid films were directly formed on the conductive glass substrates by screen printing technology. The sponge-like nanocrystalline TiO2 films with a thickness of about 10 μm were obtained by sintering. Due to the nanostructure and porosity of the film, its surface area is about 1000 times higher than that of a dense and flat film. Based on nanocrystalline TiO2 semiconductor porous film and organic dye sensitizer with excellent optical properties, a new type of solar cell with low cost and high efficiency has emerged