One-pot hydrothermal synthesis of thioglycolic acid-capped CdSe quantum dots-sensitized mesoscopic TiO2 photoanodes for sensitized solar cells

Song, Xiaohui; Liu, Xingna; Yan, Yong; Deng, Jianping; Wang, Yongyong; Dong, Xiao; Mo, Zhenkun; Xia, Congxin

doi:10.1016/j.solmat.2017.10.032

Cited by 17 publications

(1 citation statement)

References 45 publications

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“…By using various methods or employed Cd and Se precursors, many researchers have attempted to synthesise the CdSe QDs. The CdSe QDs preparation has been recently attempted via colloidal reaction method [8], one-pot hydrothermal synthesis [9], liquid paraffin with a mixture [10], microwave and electron beam irradiation [11,12] and aqueous solution [13][14][15]. When comparing with these routes, the synthesis procedures by using an aqueous solution is exhibiting good water solubility that is simple, green and highly reproducible.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of CdSe QDs by using a chemical solution route

Akter

Khan

Mamur

et al. 2020

Micro & Nano Letters

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An efficient synthesis process approach based on a chemical solution route is developed for the cadmium selenide quantum dots (CdSe QDs) that utilise photonic and optoelectronic device manufacturing. The developed route consists of dissolving the cadmium chloride (CdCl 2 .H 2 O), 2-mercaptoethanol and sodium selenide anhydrous (Na 2 SeO 3). The different characterisation parameters such as ultraviolet (UV) absorbance, x-ray diffraction (XRD), scanning electron microscopy, energy dispersive x-ray and transmission electron microscopy (TEM) were employed in order to develop the CdSe QDs. When the sample was analysed from the UV-visible studies, the bandgap was about 2.16 eV, whereas the bulk CdSe bandgap was about 1.78 eV. The developed CdSe QDs possessed a cubic crystal structure with crystalline dimensions of about 4.86 nm. Its surface morphology and structure showed the smooth appearance of the surface. The result indicated agglomerated spheres. Ultimately, according to XRD and TEM results, the crystalline dimension was determined in good agreements.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of CdSe QDs by using a chemical solution route

Akter

Khan

Mamur

et al. 2020

Micro & Nano Letters

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One‐Pot, Rapid and Facile Synthesis of Thioglycolic Acid capped CdSe quantum dots: Tuning of Properties, Mechanistic Investigations by Cyclic Voltammetry and Cytotoxicity Studies

Singh¹,

Yumnam²,

Kunwar

et al. 2020

ChemistrySelect

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Thioglycolic acid (TGA) capped CdSe quantum dots (QD) have been synthesized in aqueous solution using facile, one‐pot and soft chemical route at ambient condition. The excitonic absorption peak and band gap of the QD could be tuned from 435 nm to 472 nm and from 2.37 eV to 2.60 eV respectively. The morphology of these QD were dependent on the precursor's concentration during synthesis. These QD exhibited broad photoluminescence (PL) spectra with large Stokes shift. It was observed that in the synthesis of CdSe QD TGA played twin role of catalyzing and capping agent. Detailed reaction mechanism of synthesis studied using cyclic voltammetry confirms the role of thioglycolate anion in the synthesis of CdSe QD. Cytotoxicity effects of these QD were studied in both the normal and cancer cell, indicted that TGA capped CdSe QD are cytotoxic beyond 10 μg/ml concentration and leads to cell proliferation of cancer cells.

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