二氧化钛阵列的制备及其光学性能

张建城; 陈红婉; 吴坦洋; 李昆燕; 金云霞

doi:10.3788/fgxb20194007.0879

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二氧化钛阵列的制备及其光学性能

器件制备及器件物理 | 更新时间：2020-08-12

- 二氧化钛阵列的制备及其光学性能
- Synthesis and Optical Properties of TiO₂ Array
- 发光学报 2019年40卷第7期页码：879-884
- 作者机构：
  
  1. 云南民族大学电气信息工程学院, 云南昆明 650031
  2. 云南民族大学云南省高校无线传感器网络技术重点实验室, 云南昆明 650031
- 作者简介：
- 基金信息：
  
  国家自然科学基金（11564045）资助项目()
- DOI：10.3788/fgxb20194007.0879
  中图分类号： O482;TB383
- 纸质出版日期：2019-7-5，
  
  网络出版日期：2018-10-15，
  
  收稿日期：2018-8-2，
  
  修回日期：2018-9-26，
扫描看全文
张建城, 陈红婉, 吴坦洋等. 二氧化钛阵列的制备及其光学性能[J]. 发光学报, 2019,40(7): 879-884

ZHANG Jian-cheng, CHEN Hong-wan, WU Tan-yang etc. Synthesis and Optical Properties of TiO<sub>2</sub> Array[J]. Chinese Journal of Luminescence, 2019,40(7): 879-884
张建城, 陈红婉, 吴坦洋等. 二氧化钛阵列的制备及其光学性能[J]. 发光学报, 2019,40(7): 879-884 DOI： 10.3788/fgxb20194007.0879.

ZHANG Jian-cheng, CHEN Hong-wan, WU Tan-yang etc. Synthesis and Optical Properties of TiO<sub>2</sub> Array[J]. Chinese Journal of Luminescence, 2019,40(7): 879-884 DOI： 10.3788/fgxb20194007.0879.

摘要

以水热法制备了由纳米棒组成的二氧化钛阵列。通过控制反应时间，对组成阵列的二氧化钛纳米棒的尺寸进行调节。利用扫描电镜和X射线衍射光谱分析了样品的形貌和晶体结构，发现将反应时间由4 h延长至8 h，二氧化钛纳米棒的直径由100 nm增大到200 nm。利用紫外-可见吸收光谱测量了样品的光吸收特性，发现了尺寸效应引起的吸收边和带隙变化，反应时间由4 h延长至8 h，样品带隙由3.09 eV变化至2.97 eV。利用荧光光谱研究样品的光致发光性能，发现了样品的近带边发光（382 nm左右）、自陷激子发光（420 nm左右）、束缚激子发光（456 nm左右）和缺陷能级发光（492 nm左右）。

Abstract

TiO

array was synthesized by hydrothermal method. The scanning electron microscopy(SEM) and X-ray diffraction(XRD) are used to detect their morphology and structure. The average diameter of TiO

nanorods was increased from 100 nm to 200 nm

when the hydrothermal reaction time changed from 4 h to 8 h. UV-vis spectra were used to detect their absorption properties. The TiO

array with shorter diameter shows blue shift of absorption edge and broadened band gap. The band gap of TiO

nanorod was decreased from 3.09 eV to 2.97 eV

when the hydrothermal reaction time changed from 4 h to 8 h. Photoluminescence spectra were used to detect their optical properties. Near absorption edgee mission(about 382 nm)

self-trapped exciton emission(about 420 nm)

bound exciton emission(about 456 nm)

and defect site emission(about 492 nm) are obtained under the examination by PL spectra.

关键词

水热法二氧化钛阵列光致发光

Keywords

hydrothermal methodTiO2 arrayoptical properties

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