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低温负载钛硅薄膜聚丙烯腈纱线的甲基橙光催化降解特性研究 被引量:2
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作者 张峰 李文奇 +1 位作者 余薪萍 冯传平 《水处理技术》 CAS CSCD 北大核心 2010年第10期44-47,共4页
研究采用溶胶-凝胶水热法,以钛酸四正丁酯和正硅酸乙酯为前驱体,低温条件下在聚丙烯腈(PAN)纱线表面上成功负载钛硅薄膜。通过扫描电镜和x射线衍射等方法对薄膜进行表征;并对用该纱线制成的光催化反应装置进行甲基橙光催化降解特性试验... 研究采用溶胶-凝胶水热法,以钛酸四正丁酯和正硅酸乙酯为前驱体,低温条件下在聚丙烯腈(PAN)纱线表面上成功负载钛硅薄膜。通过扫描电镜和x射线衍射等方法对薄膜进行表征;并对用该纱线制成的光催化反应装置进行甲基橙光催化降解特性试验。结果表明,当钛硅量比为1:4时,光催化剂薄膜均匀负载于纱线表面,且为锐钛型TiO2薄膜;钛硅薄膜PAN纱线具有明显的光催化活性,试验条件下,48h甲基橙溶液光催化脱色率达到92%,且多次使用后催化活性保持稳定;钛硅PAN纱线光催化降解甲基橙反应遵循一级反应动力学,反应速率随着污染物质量浓度升高而降低。 展开更多
关键词 钛硅薄膜 聚丙烯腈纱线 光催化 甲基橙
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基于硅钛氧化物复合薄膜的有机场效应晶体管
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作者 胡加兴 李乐丹 王茹霞 《半导体技术》 CAS 北大核心 2020年第12期943-947,956,共6页
研究了以硅钛氧化物复合薄膜为绝缘层、并五苯为半导体层的有机场效应晶体管(OFET),其中硅钛氧化物复合薄膜采用溶胶-凝胶法制备。采用傅里叶红外光谱仪、X射线衍射仪、原子力显微镜和扫描电子显微镜对硅钛氧化物复合薄膜进行了测试和... 研究了以硅钛氧化物复合薄膜为绝缘层、并五苯为半导体层的有机场效应晶体管(OFET),其中硅钛氧化物复合薄膜采用溶胶-凝胶法制备。采用傅里叶红外光谱仪、X射线衍射仪、原子力显微镜和扫描电子显微镜对硅钛氧化物复合薄膜进行了测试和表征。结果表明,硅钛氧化物复合薄膜中存在两种不同类型的氧化钛晶体结构(锐钛矿和金红石),具有较高的介电常数(k=9.47),在30 V偏压下漏电流密度小于1×10-9 A·cm-2。器件测试结果表明,有机场效应晶体管的载流子迁移率为0.16 cm2·V-1·s-1,开启电压为-1.9 V,亚阈值摆幅为180 mV·dec-1,开关比为1×104。高介电常数绝缘层可以有效降低有机场效应晶体管的工作电压、开启电压和亚阈值摆幅。 展开更多
关键词 氧化物复合薄膜 有机场效应晶体管(OFET) 溶胶-凝胶法 介电常数 工作电压
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反应溅射Ti-Si-N纳米晶复合薄膜研究
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作者 戴嘉维 胡祖光 +2 位作者 祝新发 陈练 李戈扬 《电子显微学报》 CAS CSCD 北大核心 2004年第4期372-372,共1页
关键词 --氮复合薄膜 纳米晶体 反应溅射法 透射电子显微镜 结构分析
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Influence of oxygen treatment and temperature on electrical properties of the epitaxial Nb-doped SrTiO_3 films on silicon 被引量:1
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作者 XIANG WenFeng WANG ShaoMin ZHAO Kun 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第10期2009-2011,共3页
We have fabricated the epitaxial Nb-doped SrTiO3(NbSTO) thin films on Si substrates using a TiN film as the buffer layer.The oxygen-treatment and temperature dependence of electrical properties has been investigated.O... We have fabricated the epitaxial Nb-doped SrTiO3(NbSTO) thin films on Si substrates using a TiN film as the buffer layer.The oxygen-treatment and temperature dependence of electrical properties has been investigated.Oxygen treatment showed the surface change of NbSTO films has immense influence on the resistance switching.The resistance ratio of two resistance states decreased after oxygen treatment.With tested-temperature rising,the resistance and resistance ratio of two resistance states increased.The resistance switching of Pt/NbSTO junction as a function of oxygen-treatment and temperature can be explained by the charge trapping and detrapping process in the Pt/NbSTO interface,which will help understand the resistance switching mechanism of oxides. 展开更多
关键词 epitaxial Nb-doped SrTiO3 films resistance switching temperature dependence oxygen treatment
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Experimental Study of Perfectly Patterned Silica-Titania Optical Waveguide 被引量:1
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作者 Rimlee DEB ROY Devika SIL +2 位作者 Sunirmal JANA Prasanta Kumar BISWAS Shyamal Kumar BHADRA 《Photonic Sensors》 SCIE EI CAS 2012年第1期81-91,共11页
Inorganic silica-titania thin films with thicknesses 150 nm-200 nm are deposited on high purity and polished silicon wafer and silica glass substrates by sol-gel dipping process and are patterned by capillary force li... Inorganic silica-titania thin films with thicknesses 150 nm-200 nm are deposited on high purity and polished silicon wafer and silica glass substrates by sol-gel dipping process and are patterned by capillary force lithography technique. Subsequently grating structure is embossed in green stage. The patterned gel films are subjected to stepwise heat treatment to 500 ℃ and above in pure oxygen atmosphere in order to achieve major conversion of mixed-gel to oxide optical films which are characterized by Ellipsometry, Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM) to optimize the fabrication parameters and to get perfectly matched film. Removal of organics and formation of perfectly inorganic silica-titania network at optimized heat treatment in controlled environment are ensured by FTIR spectral study. The difference in refractive indices between the substrate and coated film as developed waveguides for operating wavelength show the planar waveguide behavior of the films. calculated theoretically matches exactly with the (632.8 nm) and the measured optical properties 展开更多
关键词 Optical properties sol-gel technique thin films OXIDES
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