位置:成果数据库 > 期刊 > 期刊详情页
Preparation of transparent TiO2 nanocrystalline film for UV sensor
  • ISSN号:1001-9731
  • 期刊名称:《功能材料》
  • 时间:0
  • 分类:TB321[一般工业技术—材料科学与工程]
  • 作者机构:[1]Optoelectronic Technology Institute, Dalian Maritime University, Dalian116026, China
  • 相关基金:Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant No. 60274040)
中文摘要:

nanocrystalline TiO_2 电影电极被大音阶的第五音胶化方法在不同锻烧的温度准备,它有不同电影厚度,一致透明性,以及光电的高度和机械稳定性的特征。光电的大小证明那锻烧的温度和电影厚度能显著地影响电极的光电的性质。在 450 deg C 锻烧的电影是有 highcrystallinity 和强壮的光电的活动的锐钛矿阶段,并且显示出最大的光电流。当温度比 450 deg C 低时,因为很多缺点,这部电影在这部电影有更弱的结晶度,并且这不为 pho-togenerated 搬运人的运输是有利的。并且在比 450 deg C 高的温度,电极的光电流被减少在这部电影的到期的 toanatase 金红石阶段转变。电影厚度的增加对紫外光的改进有利(紫外) 吸收总计,它将改进这部电影的光电的活动。但是,过多的厚度将在电极在减小增加 theelectron 洞对,和结果的再结合率“ s photoelectric 活动。另外,在电极生产的光电流的反应敏感和稳定性与偏爱潜力有关。在 0.4 V 的一个潜力,电极显示出 30.8 亩 Aand 的浸透的光电流 ~ 的一反应时间 1 s,建议准备 TiO_2 拍摄电极能被用于做紫外传感器。

英文摘要:

The nanocrystalline TiO2 film electrodes were prepared by sol-gel method at different calcining temperatures, which had characteristics of different film thickness, uniform transparency, as well as high photoelectric and mechanical stability. Photoelectric measurements show that calcining temperature and film thickness could remarkably influence the photoelectric properties of the electrodes. The film calcined at 450℃ is anatase phase with high crystallinity and strong photoelectric activity, and shows the largest photocurrent. When the temperature is lower than 450℃, the film has weaker crystallinity because of a large number of defects in the film, and this is not favorable for the transport of the photogenerated carriers. And at a temperature higher than 450℃, the photocurrent of the electrode is decreased due to anatase-rutile phase transition in the film. The increase in film thickness is favorable to the enhancement of ultraviolet light (UV) absorption amount, which would improve the photoelectric activity of the film. But, excessive thickness will increase the recombination rate of the electron-hole pairs, and result in a reduction in electrode's photoelectric activity. In addition, the response sensitivity and stability of the photocurrent produced in the electrode are related to bias potential. At a potential of 0.4 V, the electrode shows a saturated photocurrent of 30.8 μA and a response time of -1 s, suggesting that the prepared TiO2 film electrode can be used for making UV sensors.

同期刊论文项目
同项目期刊论文
期刊信息
  • 《功能材料》
  • 北大核心期刊(2011版)
  • 主管单位:重庆材料研究院
  • 主办单位:重庆材料研究院
  • 主编:黄伯云
  • 地址:重庆北碚区蔡家工业园嘉德大道8号
  • 邮编:400707
  • 邮箱:gnclwb@126.com
  • 电话:023-68264739
  • 国际标准刊号:ISSN:1001-9731
  • 国内统一刊号:ISSN:50-1099/TH
  • 邮发代号:78-6
  • 获奖情况:
  • 2008、2011年连续获中国精品科技期刊,2010获重庆市双十佳期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),英国英国皇家化学学会文摘,中国北大核心期刊(2000版)
  • 被引量:30166