摘要
一维TiO_2纳米材料良好的电子传输特性为有效提高钙钛矿太阳电池等新型太阳电池的光电性能提供了理论基础。采用水热法在FTO上制备了垂直定向生长的一维单晶金红石相TiO_2纳米棒薄膜;利用XRD、SEM、UV-Vis、TEM和SAED对样品进行了表征;研究了钛酸丁酯的用量和水热反应次数对纳米棒薄膜的形态和光学性能的影响。结果表明,在水∶浓盐酸∶钛酸丁酯=30∶30∶1(体积比)和循环水热反应2次时,得到均匀致密且沿[001]晶向定向生长的一维单晶TiO_2纳米棒薄膜,它在紫外光、可见光区的光吸收增强,且带边红移,禁带宽度为3.0eV。
The good electron transport properties of one-dimensional TiO2 nanomaterials provide theoretical feasibility for effectively improving the photoelectric properties of new solar cells such as perovskite solar cells. In this paper, the vertically oriented one-dimensional single crystal rutile TiO2 nanorods thin films were prepared by hydrothermal method on FTO. The samples were characterized by XRD, SEM, UV-Vis, TEM and SAED. The effects of the amount of butyl titanate and the number of hydrothermal reaction on the morphology and optical properties of nanorods thin films were investigated. The results show that when the volume ratio of water, hydrochloric acid and butyl titanate is 30∶30∶1, under circulating hydrothermal reaction of two times, one-dimensional single crystal TiO2 nanorods thin films with uniformly dense and oriented crystal growth along the[001]orientation were obtained. The photoabsorption of the nanorods thin films in UV and visible regions was enhanced, the photoabsorption edge was red-shifted, and the band gap was 3.0eV.
作者
邓亚丰
李新利
马战红
明晓丽
任凤章
DENG Yafeng;LI Xinli;MA Zhanhong;MING Xiaoli;REN Fengzhang(School of Materials Science and Engin.,He'nan University of Science and Technol.;He'nan Key Lab.of Non-Ferrous Materials Science &Processing Technol.;He'nan Collaborative Innovation Centre of Non-Ferrous Generic Technol.,Luoyang 471023,CHN)
出处
《半导体光电》
CAS
北大核心
2018年第6期836-842,共7页
Semiconductor Optoelectronics
基金
河南省国际科技合作计划项目(152102410035)
河南省科技创新人才计划项目(144200510001)
关键词
一维单晶TiO2纳米棒薄膜
水热法
钛酸丁酯用量
水热反应次数
one-dimensional single crystal TiO2 nanorods thin films
hydrothermal method
amount of butyl titanate
number of hydrothermal reaction
