Synthesis of high-quality and efficient quantum dots with inorganic surface passivation in a modified phosphine-free method

Chen, Wei1; Cao, Wanqiang2; Hao, Junjie1; Wang, Kai1

2015-01-15

10.1016/j.matlet.2014.10.049

MATERIALS LETTERS   影响因子和分区

0167-577X

1873-4979

A green and modified mitre to synthesize high-quality luminescera quanium dots (QDs) with surface inorganic passivation is reported in this letter. Ordinary metal oxide (CdO, ZnO), pellets of Se and S were used to prepare nanocrystals in paraffin liquid. The luminescent properties were investigated by UV-vis absorption and photoluminescent spectra. The photoluminesence quantum yield (PL QY) of as prepared passivated QDs reached as high as 68% and the full width at half maximum (FWHM) stayed at 28 rim from the PL spectra. Fast Fourier transform algorithm (FFT) on high-resolution lattice fringes confirmed that the QDs was successfully coated and alloyed by the inorganic shell. Additionally, it was found that the net atmosphere plays an important role to obtain higher quality QDs in paraffin liquid. (C) 2014 Elsevier B.V. All rights reserved.

Nanoparticles Crystal growth Quantum dots Paraffin liquid Atmosphere

SCI ; EI

英语

第一 ; 通讯

Natural Science Foundation of China (NSFC)[51402148]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000345640300026

ELSEVIER SCIENCE BV

20144500164223

Cadmium compounds ; Crystal growth ; Earth atmosphere ; Fast Fourier transforms ; II-VI semiconductors ; Liquids ; Luminescence ; Metals ; Nanocrystals ; Nanoparticles ; Paraffins ; Passivation ; Phosphorus compounds ; Zinc oxide

Atmospheric Properties:443.1 ; Protection Methods:539.2.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Mathematical Transformations:921.3 ; Solid State Physics:933 ; Crystal Growth:933.1.2

MATERIALS SCIENCE

Web of Science

1.South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Peoples R China

Chen, Wei,Cao, Wanqiang,Hao, Junjie,et al. Synthesis of high-quality and efficient quantum dots with inorganic surface passivation in a modified phosphine-free method[J]. MATERIALS LETTERS,2015,139:98-100.

Chen, Wei,Cao, Wanqiang,Hao, Junjie,&Wang, Kai.(2015).Synthesis of high-quality and efficient quantum dots with inorganic surface passivation in a modified phosphine-free method.MATERIALS LETTERS,139,98-100.

Chen, Wei,et al."Synthesis of high-quality and efficient quantum dots with inorganic surface passivation in a modified phosphine-free method".MATERIALS LETTERS 139(2015):98-100.