Herein, we describe simple, fast and reproducible halide ion exchange reactions in CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) at room temperature. Through the simple adjustment of concentration, photoluminescence these NCs can be tuned over entire visible region (425-655 nm). Photodetector devices based on entirely inorganic CsPbI3 are demonstrated for first time. The photodetectors exhibited a good on/off photocurrent ratio 10(5).

The visible green and red upconversion emissions in Er3+/Yb3+ doped β-NaGdF4 nanoparticles were enhanced by tridoping with Fe3+ ions (0–40 mol%). XRD, XPS, ICP-AES EDS data demonstrated successful incorporation of NaGdF4:Yb3+/Er3+ nanoparticles. effect on the luminescence NPs was investigated detail. emission intensities 34 30 times, respectively. maximum observed a sample containing mol% ions. A possible mechanism for is proposed. In addition, layer silica coated onto surface UCNPs to...

Synthesis of cadmium (Cd)-free quantum dots (QDs) with tunable emission and high color purity has been a big challenge for the academic industrial research community. Among various Cd-free QDs, indium phosphide (InP) QDs exhibit reasonably good full width at half-maximum (fwhm) values between 45 50 nm green over red emission, which is not enough, as less than 35 are favorable in commercial display products. In this work, we present synthesis highly luminescent In(Zn)P/ZnSe/ZnS from 488 to...

We demonstrate a highly sensitive hybrid photodetector based on graphene–CsPbBr_3−xI_x perovskite nanocrystals.

High-sensitivity photodetectors are reported using solution synthesized GeS and GeSe nanosheets.

A simple and efficient coating method of silver nanowires with uniform shells TiO2 has been established using 2-mercaptoethanol monolayers. The thickness the titania layer can be controlled by changing concentration precursor solution. In situ TEM thermal annealing studies showed that nanowire core remains intact until temperatures 750 °C, which is significantly higher than melting temperature bare nanowires. After this temperature, Ag were melted subsequently vaporized, leaving nanotubes....

A simple solvothermal approach for the phase controlled synthesis of SnSe and SnSe₂ hierarchical nanostructures (HNs) has been reported.

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTwo-Step "Seed-Mediated" Synthetic Approach to Colloidal Indium Phosphide Quantum Dots with High-Purity Photo- and ElectroluminescenceParthiban RamasamyParthiban RamasamyDepartment of Energy Science Engineering, DGIST, Daegu 42988, Republic KoreaMore by Parthiban Ramasamyhttp://orcid.org/0000-0001-5844-7196, Keum-Jin KoKeum-Jin KoDepartment Flexible Printable Electronics, Polymer Materials Fusion Research Center, Chonbuk National University,...

This review focuses on the various synthetic approaches to upconversion nanocrystals and recent developments in photovoltaic applications of nanomaterials.

A novel rear reflector structure that combines NIR light harvesting β-NaGdF4:Yb, Er, Fe upconversion nanoparticles (UCNPs) and reflecting silver particles has been successfully used to improve the performance of dye-sensitized solar cells (DSSCs). The power conversion efficiency DSSCs with a was 7.04%, which is an increase 21.3% compared cell without (5.8%).

Urchin like Ni_xCo_3−xO₄hierarchical nanostructures were demonstrated as promising electrocatalysts for oxygen reduction and methanol oxidation reactions in alkaline fuel cells.

Zero-dimensional-two-dimensional (0D-2D) hybrid optoelectronic devices have demonstrated high sensitivity and performance due to the absorption coefficient of 0D materials with a tunable detection range carrier transport property 2D materials. However, reported 0D-2D employ toxic nanomaterials as sensitizing layers, which can limit practical applications. In this study, we first fabricated photodetector using nontoxic InP quantum dots (QDs) light-absorbing layer black phosphorus (BP) layer....

We demonstrate that the presence of a small amount water as an impurity during hot-injection synthesis can significantly decrease emission lines full width at half-maximum (FWHM) and improve quantum yield (QY) InP/ZnS dots (QDs). By utilizing present in indium precursor solvent, we obtained QDs emitting around 530 nm with FWHM narrow 46 QY up to 45%. Without water, synthesized have 625 66 about 33%. Absorption spectra, XRD XPS analyses revealed when is present, amorphous phosphate layer...

TiO2, SnO2, ZnO, Fe2O3, and ZrO2 nanotubes were synthesized through a combination of templating solvothermal processes. Selenium nanowires have been used as template for the first time to synthesis family functional metal oxide nanotubes. The so obtained composed fine particles with sizes small 6–8 nm. These characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission (TEM) Raman spectra. influence TiO2 on performance dye-sensitized solar cells (DSSCs) based...

Unique colloidal synthesis of monodispersed dumbbell shaped metal–Cu₂S (M–Cu₂S where M = Pt, FePt) HNs and their utilization in hydrogen production.

High quality Mn-doped CdTe nanorods with uniform diameter were synthesized in aqueous phase by spontaneous self-organization of nanoparticles into nanorods. The the increased gradually from 4.1 to 10.2 nm for 0–4.2% Mn incorporations. intermediate step nanorod growth was found be double or triple chain aggregation. X-ray diffraction (XRD) patterns doped samples retained same crystal structure as nanocrystals, indicating no second formation ion. XPS, ICP-AES and ESR data demonstrate...

Copper based ternary and quaternary semiconductor nanostructures are of great interest for the fabrication low cost photovoltaics. Although well-developed syntheses available zero dimensional (0D) nanoparticles, colloidal synthesis two (2D) nanosheets remains a big challenge. Here we report, first time, simple reproducible cation exchange approach 2D Cu2GeSe3, Cu2ZnGeSe4 their alloyed Cu2GeS(x)Se(3-x), Cu2ZnGeS(x)Se(4-x) using pre-synthesized Cu(2x)Se as template. A mechanism formation...