Preparation and Optical Properties of Zinc Oxide, Carbon and Their Quantum Dot Mixture

YANG Guang-wu; ZHANG Shou-chao; WANG Cui-hong; ZHU Fei; JIANG Yue

doi:10.3788/fgxb20173810.1287

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Preparation and Optical Properties of Zinc Oxide, Carbon and Their Quantum Dot Mixture

更新时间：2020-08-12

- Preparation and Optical Properties of Zinc Oxide, Carbon and Their Quantum Dot Mixture
- Chinese Journal of Luminescence Vol. 38, Issue 10, Pages: 1287-1294(2017)
- 作者机构：
  
  天津城建大学理学院天津,300384
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11604238)。
- DOI：10.3788/fgxb20173810.1287
  CLC： O469;O482.31
- Received：02 March 2017，
  
  Revised：13 April 2017，
  
  Published Online：29 June 2017，
  
  Published：05 October 2017
- 稿件说明：
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杨广武, 张守超, 王翠红等. 氧化锌量子点和碳量子点及其复合物的制备与发光性能的研究[J]. 发光学报, 2017,38(10): 1287-1294

YANG Guang-wu, ZHANG Shou-chao, WANG Cui-hong etc. Preparation and Optical Properties of Zinc Oxide, Carbon and Their Quantum Dot Mixture[J]. Chinese Journal of Luminescence, 2017,38(10): 1287-1294
杨广武, 张守超, 王翠红等. 氧化锌量子点和碳量子点及其复合物的制备与发光性能的研究[J]. 发光学报, 2017,38(10): 1287-1294 DOI： 10.3788/fgxb20173810.1287.

YANG Guang-wu, ZHANG Shou-chao, WANG Cui-hong etc. Preparation and Optical Properties of Zinc Oxide, Carbon and Their Quantum Dot Mixture[J]. Chinese Journal of Luminescence, 2017,38(10): 1287-1294 DOI： 10.3788/fgxb20173810.1287.

摘要

采用溶胶凝胶方法和水热法制备了水溶性荧光氧化锌量子点（ZnO-QDs）和碳量子点（C-QDs），其量子效率分别达到38%和61%。基于所合成的ZnO-QDs和C-QDs制备了氧化锌和碳量子点复合物（ZnO/C-QDs），并分别对其发光特性进行了研究。透射电镜（TEM）图像表明，所合成的ZnO-QDs和碳量子点尺寸分布在3~6 nm之间，分散均匀。光致发光光谱表明，ZnO-QDs和碳量子点的发光峰中心分别位于540 nm和450 nm，两者发光峰的最佳激发波长为370 nm和350 nm。通过调整ZnO-QDs和C-QDs的体积比，所制备的ZnO/C-QDs能够实现荧光光谱的连续可调，并产生了白色荧光。

Abstract

Water-soluble fluorescence zinc oxide quantum dots (ZnO-QDs) and carbon quantum dots (C-QDs) were prepared by sol-gel and hydrothermal method

and their quantum yields were 38% and 61%

respectively. ZnO and carbon quantum dots mixtures (ZnO/C-QDs) were prepared based on the as-prepared ZnO-QDs and C-QDs

and their optical properties were investigated

respectively. The transmission electron microscopy (TEM) images indicate that the size of ZnO-QDs and C-QDs are around 3-6 nm and disperse uniformly. The photoluminescence (PL) spectra of ZnO-QDs and C-QDs dominate by a broad emission centered at around 540 nm and 450 nm

and their optimal excitation wavelengths are 370 nm and 350 nm. By adjusting the volume ratio between ZnO-QDs and C-QDs

the spectra of as-prepared ZnO/C-QDs show continuously variable properties

and white fluorescence can be observed from the ZnO/C-QDs.

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references

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