All-inorganic colloidal quantum dots display technology

Wei-dong, 耿卫东 Geng; Jia, 郭嘉 Guo; Jing, 唐静 Tang; Hui-gang, 刘会刚 Liu

doi:10.3788/yjyxs20142904.0479

Cited by 2 publications

(1 citation statement)

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“…In recent years, low-cost solution-based synthesis of colloidal semiconductor quantum dots (QDs) have drawn increasing attention due to their applications on quantum dots-based LEDs which exhibit highly pure and saturated color gamut, [1,2] narrow-band width QD photodetectors, [3] and single-electron transistors. [4] Quantum dots have such advantages as color tunableness, high solution processability and high color purity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO quantum dots and their agglomeration mechanisms along with emission spectra based on ageing time and temperature

Qiao¹,

Zhao²,

Xu³

et al. 2016

Chinese Phys. B

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The ZnO quantum dots (QDs) were synthesized with improved chemical solution method. The size of the ZnO QDs is exceedingly uniform with a diameter of approximately 4.8 nm, which are homogeneously dispersed in ethanol. The optical absorption edge shifts from 370 nm of bulk material to 359 nm of QD materials due to the quantum size effect, while the photoluminescence peak shifts from 375 nm to 387 nm with the increase of the density of ZnO QDs. The stability of ZnO QDs was studied with different dispersion degrees at 0 • C and at room temperature of 25 • C. The agglomeration mechanisms and their relationship with the emission spectra were uncovered for the first time. With the ageing of ZnO QDs, the agglomeration is aggravated and the surface defects increase, which leads to the defect emission.

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