退火对CdSe量子点荧光影响的色度学研究

胡炼; 吴惠桢

doi:10.3788/fgxb20153606.0610

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退火对CdSe量子点荧光影响的色度学研究

材料合成及性能 | 更新时间：2020-08-12

- 退火对CdSe量子点荧光影响的色度学研究
- Colorimetric Study of Annealing Effect on Fluorescence Performance of CdSe Quantum Dots
- 发光学报 2015年36卷第6期页码：610-616
- 作者机构：
  
  1. 浙江大学物理系,310027
  2. 江南大学理学院,江苏无锡,中国,214122
- 作者简介：
- 基金信息：
  
  中央高校基本科研业务费专项资金(JUSRP11403)资助项目()
- DOI：10.3788/fgxb20153606.0610
  中图分类号： O482.31
- 纸质出版日期：2015-6-3，
  
  网络出版日期：2015-4-21，
  
  收稿日期：2015-3-24，
  
  修回日期：2015-4-10，
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胡炼, 吴惠桢,. 退火对CdSe量子点荧光影响的色度学研究[J]. 发光学报, 2015,36(6): 610-616

HU Lian, WU Hui-zhen,. Colorimetric Study of Annealing Effect on Fluorescence Performance of CdSe Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(6): 610-616
胡炼, 吴惠桢,. 退火对CdSe量子点荧光影响的色度学研究[J]. 发光学报, 2015,36(6): 610-616 DOI： 10.3788/fgxb20153606.0610.

HU Lian, WU Hui-zhen,. Colorimetric Study of Annealing Effect on Fluorescence Performance of CdSe Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(6): 610-616 DOI： 10.3788/fgxb20153606.0610.

摘要

制备出两种尺寸的CdSe量子点。结合色度学分析

比较了固化在PMMA基质中两种尺寸CdSe量子点在退火中发生的不同变化以及相应光谱颜色的改变。小尺寸CdSe量子点在退火中有团聚的趋势

退火后荧光明显红移

如果退火温度超过一定范围

会产生显著的双尺寸分布效应

对应的色度坐标有从白光区域向上移动到绿色区域的趋势。较大尺寸的CdSe量子点

其热稳定性相对更好

退火造成荧光红移

对应绿色区域中的色度坐标有向右移动的趋势

但颜色改变不明显

因此更适合于发光显示方面的应用。

Abstract

Two sized CdSe quantum dots (QDs) were synthesized

and the polymethylmethacrylate (PMMA)-QD samples were annealed. The photoluminescence (PL) spectra of the samples were measured

and the annealing-induced effects on these two sized QDs were compared with colorimetric study. The QDs with small size tend to aggregate in annealing process

which results in the bimodal size distribution phenomenon. Caused by annealing

the CIE coordinate of small CdSe QDs shifts up to the green region from white region. The bigger QDs with better thermal stability have similar emission color before and after annealing

because the CIE coordinate in green region moves toward right slightly in annealing process. After all

the better thermal stability of bigger QDs makes them more suitable for the application of light emitting display.

关键词

CdSe量子点退火双尺寸分布缺陷

Keywords

CdSequantum dotsannealingbimodal size distributiondefect states

references

Jang E, Jun S, Jang H, et al. White-light-emitting diodes with quantum dot color converters for display backlights [J]. Adv. Mater., 2010, 22(28):3076-3080.

Chen J, Zhao D W, Li C, et al. All solution-processed stable white quantum dot light-emitting diodes with hybrid ZnO@TiO2 as blue emitters [J]. Sci. Rep., 2014, 4:4085-1-8.

Dai X L, Zhang Z X, Jin Y Z, et al. Solution-processed, high-performance light-emitting diodes based on quantum dots [J]. Nature, 2014, 515(7525):96-99.

Duan H, Chen X L, Jiang H, et al. Quantum-dot submicrobead-based immunochromatographic strip for rapid and quantitative detection of plasmodium falciparum [J]. Chin. J. Anal. Chem.(分析化学), 2015, 43(3):338-343 (in Chinese).

Liu X, Luo Y. Surface modification technologies of quantum dots based biosensors and their medical applications [J]. Chin. J. Anal. Chem.(分析化学), 2014, 42(7):1061-1069 (in Chinese).

El-Kemary M, Gaber M, El-Sayed Y S, et al. Photoinduced interaction of CdSe quantum dot with coumarins [J]. J. Lumin., 2015, 159:26-31.

Chen X, Wang X, Zhao J. Temperature-dependent photoluminescence of ZnCuInS quantum dots [J]. Chin. J. Lumin.(发光学报), 2012, 33(9):923-928 (in Chinese).

Chen X H, Yuan X, Hua J, et al. Shell-dependent thermal stability of CdSe core/shell quantum dot photoluminescence [J]. Chin. J. Lumin.(发光学报), 2014, 35(9):1051-1057 (in Chinese).

Lee H S, Lee K H, Park H L, et al. Effect of thermal annealing on the interband transitions and activation energies of CdTe/ZnTe quantum dots [J]. J. Appl. Phys., 2005, 98(2):023702-1-4.

Farva U, Park C. Influence of thermal annealing on the structural and optical properties of CdSe nanoparticles [J]. Sol. Energy Mater. Sol. Cells, 2010, 94(2):303-309.

Gao Y P, Zhu J Y, Tian Y Y, et al. Annealing effects on the solution processed CdTe nanocrystals solar cells [J]. Physica E, 2014, 60:17-22.

Wu D G, Kordesch M E, Van Patten P G. A new class of capping ligands for CdSe nanocrystal synthesis [J]. Chem. Mater., 2005, 17(25):6436-6441.

Tamborra M, Striccoli M, Comparelli R, et al. Optical properties of hybrid composites based on highly luminescent CdS nanocrystals in polymer [J]. Nanotechnology, 2004, 15(4):S240-1-4.

Khanna P K, Singh N. Light emitting CdS quantum dots in PMMA: Synthesis and optical studies [J]. J. Lumin., 2007, 127(2):474-482.

Thessing J, Qian J H, Chen H Y, et al. Interparticle influence on size/size distribution evolution of nanocrystals [J]. J. Am. Chem. Soc., 2007, 129(10):2736-2737.

Chen H S, Kumar R V. Direct synthesis of quantum dots with controllable multimodal size distribution [J]. J. Phys. Chem. C, 2009, 113(28):12236-12242.

Dagtepe P, Chikan V. Quantized Ostwald ripening of colloidal nanoparticles [J]. J. Phys. Chem. C, 2010, 114(39):16263-16269.

Hu L, Wu H Z. Annealing-induced bimodal size distribution of small CdSe quantum dots with white-light emission [J]. Phys. Stat. Sol.(a), 2013, 210(9):1726-1733.

Hu L, Wu H Z, Du L X, et al. The effect of annealing and photoactivation on the optical transitions of band-band and surface trap states of colloidal quantum dots in PMMA [J]. Nanotechnology, 2011, 22(12):125202-1-5.

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