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Cdse Quantum Dot - DOAJ

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Last Updated: 28 January 2023

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Visible-Light-Stimulated Synaptic Phototransistors Based on CdSe Quantum Dot/In–Ga–Zn–O Hybrid Channels

Abstract: Abstract Light-stimulated synaptic devices are promising candidates for artificial intelligence systems due to their diverse capabilities, low power consumption, and superior parallelism. The improved charge separation effectiveness improves the photoelectric properties significantly, contributing to the discovery of photoelectric synaptic behavior. This simple and cost-effective method of producing light-stimulated phototransistors could encourage new research into the design of artificial intelligence systems.

Source link: https://doi.org/10.1186/s11671-022-03739-8


Band Tunable CdSe Quantum Dot-Doped Metals for Quantum Dot-Sensitized Solar Cell Application

Because of the high absorption coefficient, tunable band gap, and multiple exciton generation effects, Quantum dots are gaining a lot of attention as a material for the next-generation solar cells. We have succeeded in preparing quantum dot solar cells with high yield based on CdSe:X nanocrystal by successive ionic layer absorption and reaction in search of a more cost-effective way to boost the power conversion efficiency of quantum dot-sensitized solar cells.

Source link: https://doi.org/10.1155/2019/9812719


Performance Study of CdS/Co-Doped-CdSe Quantum Dot Sensitized Solar Cells

The bandgap of CdSe quantum dot decreases, the conduction band and valence band all rises, resulting in a cascade energy level that is more suitable for charging transport inside the solar cell and ultimately improving power conversion efficiency and ultimately improving the power conversion ratios.

Source link: https://doi.org/10.1155/2014/818160


La Doping of CdS for Enhanced CdS/CdSe Quantum Dot Cosensitized Solar Cells

Metal ions doping in quantum dots has emerged as a common means of changing the Fermi level, band gap, and conductance. Here we present an innovative solution for the rare earth materials La-doped of the CdS/CdSe QDCSCs by means of the successive ionic layer adsorption and reaction. In a CdS film, we discovered that La doped quantum dots could help more electrons accumulate in CdS film, which causes the Fermi level to rise and form a stepped structure.

Source link: https://doi.org/10.1155/2015/710140


A Suitable Polysulfide Electrolyte for CdSe Quantum Dot-Sensitized Solar Cells

When compared to pure ethanol or water as a solvent, this solvent ratio seems to increase cell performance. With a fill factor of 44 percent using a polysulfide electrolyte coated electrode prepared using 7 cycles of successive ionic layer adsorption and reaction in ethanol/water under the illumination of 100 mW/cm2 white light, the QDSSC with CdSe sensitized electrode prepared using 7 cycles of successive ionic layer adsorption and reaction yields a 1. 4 percent. In the optimized polysulfide liquid electrolyte, the CdSe QDs were also found to be stable.

Source link: https://doi.org/10.1155/2013/942139


Effect of ligand exchange on photocurrent enhancement in cadmium selenide (CdSe) quantum dot water splitting cells

PEC cells treated with 1,2-ethanedithiol and CdSe QD PEC cells were shown to have higher photocatalytic capacity in comparison to pure CdSe PEC cells, for a shorter ligand swap. The increase in the photocurrent also arises from the increase in charge transport through ligand exchange to shorter EDT ligands in the bulk CdSe film with OA ligands stifling carrier diffusion from TiO2 to CdSe.

Source link: https://doi.org/10.1016/j.rinp.2018.08.036


Single Entity Behavior of CdSe Quantum Dot Aggregates During Photoelectrochemical Detection

During MeOH photooxidation, colloidal quantum dots of CdSe and CdSe/Zns are discovered, under broad spectrum illumination, we can show that during the photooxidation of MeOH. Single entities adhes to the Pt electrode surface irreversibly, according to the stepwise photocurrent vs. time reaction. Under constant illumination, MeOH, CdSe is not as stable as CdSe/ZnS. Its photocurrent forecast for single QDs is discussed. The observed frequency of collisions for the stepwise photocurrents is smaller than the diffusion-limited cases for single QDs colliding with the electrode surface, according to the electrode surface. The ZnS layer on the CdSe/ZnS material, according to the results, facilitates single entity identification by increasing the nanomaterial's stability, facilitating single entity detection. The rate of hole transfer from QD aggregates to MeOH exceeds that of dissolution of the CdSe core under certain conditions of electron injection to the Pt electrode and in colloidal suspensions of CdSe/ZnS.

Source link: https://doi.org/10.3389/fchem.2021.733642


Bright Single-Photon Emitters with a CdSe Quantum Dot and Multimode Tapered Nanoantenna for the Visible Spectral Range

We show periodic arrays of such emitters that are produced by targeted ion beam etching from a II-VI/III-V heterostructure grown using molecular beam epitaxy. With the second-order correlation function g = 0. 25 at 220 K. , the average count of emitted single photons exceeds 5 MHz with non-resonant optical pumping.

Source link: https://doi.org/10.3390/nano11040916


CdSe quantum dot (QD)-induced morphological and functional impairments to liver in mice.

Both acute and chronic exposure in mice from QD particles could rapidly spread into various organs, and liver was the primary organ for QD accumulation in mice. As a result of morphological transition to the hepatic lobules and elevated oxidative stress, mice with both acute and chronic QD exposures suffered severe liver impairments in livers from mice with both acute and chronic QD exposure. However, the rise in the MDA level in reaction to QD therapy could be partially stifled by the pre-treatment of cells with beta-mercaptoethanol. ROS may have played a key role in QD-mediated cell damage, according to these results; however, other unidentified mediators may also be involved in QD-mediated cellular impairments. The mechanism under QD-mediated biological influence could derive from QD particle toxicity itself, as well as free cadmium ions liberated from QDs.

Source link: https://doi.org/10.1371/journal.pone.0024406


Performance Enhancement of CdS/CdSe Quantum Dot-Sensitized Solar Cells with (001)-Oriented Anatase TiO2 Nanosheets Photoanode

On two types of TiO2 photoanodes, specifically nanosheets and nanoparticles, were fabricated on Abstract CdS/CdSe quantum dot-sensitized solar cells. The TiO2 NS-based CdS/CdSe QDSSC has exhibited a power conversion rate of 4. 4 percent, which is a 54% increase in comparison to the P-25-based reference cell.

Source link: https://doi.org/10.1186/s11671-018-2842-5

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions