Optical Technique, Volume. 48, Issue 6, 674(2022)
Synthesis and luminescent property of cysteamine-CdSe quantum dots
CdSe QDs are important semiconductor nanomaterials. The water soluble cysteamine (CA)-CdSe QDs were one-step synthesized by using SeO2, cysteamine and CdCl2·2.5H2O as precursors. The influences of the refluxing time, pH of original solution, the precursor Se/Cd molar ratios, and reaction temperature on the luminescence properties of the obtained CdSe QDs have been systematically investigated.The structure and optical properties of CdSe QDs were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), UV-vis absorption spectra, and photoluminescence (PL) spectra. The results showed that QDs with CA modification for CdSe were of cubic crystal structure, particle size was about 2.0nm,and the emission spectra tunable from 560 to 589nm．
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WEI Xingming, LAI Yingying, WEI Qingmin, WU Chunying, WANG Rongfang. Synthesis and luminescent property of cysteamine-CdSe quantum dots[J]. Optical Technique, 2022, 48(6): 674
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