Preparation and fluorescence characteristics of CdTe/CdS and CdTe/ZnS core-shell semiconductor quantum dots

Qing Chang; Tianming Meng; Hengyu Tan

doi:10.3788/IRLA20200287

Journals >Infrared and Laser Engineering >Volume 50 >Issue 5 >Page 20200287 > Article

Infrared and Laser Engineering
Vol. 50, Issue 5, 20200287 (2021)

Preparation and fluorescence characteristics of CdTe/CdS and CdTe/ZnS core-shell semiconductor quantum dots

Qing Chang¹, Tianming Meng², and Hengyu Tan^2、3

Author Affiliations

¹College of Media Engineering, Communication University of Zhejiang, Hangzhou 310018, China

²College of Electronic Engineering, Heilongjiang University, Harbin 150080, China

³Beijing Institute of Metrology, Beijing 100029, China

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DOI: 10.3788/IRLA20200287 Cite this Article

Qing Chang, Tianming Meng, Hengyu Tan. Preparation and fluorescence characteristics of CdTe/CdS and CdTe/ZnS core-shell semiconductor quantum dots[J]. Infrared and Laser Engineering, 2021, 50(5): 20200287 Copy Citation Text

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Fig. 1. Absorption spectra of the CdTe/CdS quantum dots

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Fig. 2. Absorption spectra of the CdTe/ZnS quantum dots

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Fig. 3. Fluorescence spectrum of the CdTe/CdS and CdTe/ZnS quantum dots

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Sample number	Quantum dots	Size/nm	Core color	Cladding time
S1	CdTe/CdS-1	3.2	Orange	30 min
S2	CdTe/CdS-2	3.3	Orange	1 h
S3	CdTe/CdS-3	3.4	Orange	2 h
S4	CdTe/CdS-4	3.0	Yellow	30 min
S5	CdTe/CdS-5	3.1	Yellow	1 h
S6	CdTe/CdS-6	2.6	Green	30 min
S7	CdTe/CdS-7	2.7	Green	1 h
S8	CdTe/CdS-8	2.8	Green	2 h
S9	CdTe/ZnS-9	3.5	Orange	30 min
S10	CdTe/ZnS-10	3.6	Orange	1 h

Table 1. Ten kinds of the core-shell structure quantum dots

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