Enhancement in efficiency of CdS/CdSe quantum dots-sensitized solar cells based on ZnO nanostructures by introduction of MnS layer

Luo, Jun; Sun, Jia‐Lin; Guo, Pingchun; Yang, Zhisheng; Wang, Y.X.; Zhang, Q.F.

doi:10.1016/j.matlet.2017.12.025

Cited by 16 publications

(3 citation statements)

References 17 publications

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“…Due to this quality, QDSSCs are considered promising photovoltaic cells, evidenced by the high levels of research interest in this field [8][9][10][11][12][13][14][15]. This has emphasised the choice of semiconductors that could harvest the entire solar spectrum through their use as QD sensitisers.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

et al. 2020

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The main deficit of quantum dot/dye-sensitised solar cells (QDSSCs) remains the absence of a photosensitiser that can absorb the entire visible spectrum and increase electrocatalytic activity by enhancing the conversion efficiency of QDSSCs. This placed great emphasis on the synthesis route adopted for the preparation of the sensitiser. Herein, we report the fabrication of hexagonal copper monosulfide (CuS) nanocrystals, both hexadecylamine (HDA) capped and uncapped, through thermal decomposition by thermogravimetric analysis (TGA) and a single-source precursor route. Morphological, structural, and electrochemical instruments were used to assert the properties of both materials. The CuS/HDA photosensitiser demonstrated an appropriate lifetime and electron transfer, while the electron back reaction of CuS lowered the electron lifetime in the QDSSCs. The higher electrocatalytic activity and interfacial resistance observed from current density-voltage (I-V) results agreed with electrochemical impedance spectroscopy (EIS) results for CuS/HDA. The successful fabrication of hexagonal CuS nanostructures of interesting conversion output suggested that both HDA capped and uncapped nanocrystals could be adopted in photovoltaic cells.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

et al. 2020

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“…Quantum dots (QDs) have been investigated during in the past few decades because of unique optical properties such as broad and strong absorption, high fluorescence quantum yield, narrow and symmetric emission with tunable colors [1][2][3][4]. These features make them an excellent candidate in diverse applications including solar cells, biosensors, and bioimaging probes [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and cell cytotoxicity of Pd-doped CdTe quantum dots and its application as a sensitive fluorescent nanoprobe

Najafi

Safari

Amani

et al. 2019

J Mater Sci: Mater Electron

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Dopants strongly affect properties and optical behaviors of quantum dots, therefore doped-QDs considered as a novel class of luminescent materials. Following development doping approach and using Pd 2+ ions as a dopant, for the first time, in this study, a facile preparation of Pd-doped CdTe QDs was reported with thioglycolic acid as a stabilizer. The essential parameters of the synthesis conditions such as dopant concentration, reaction time and optical properties of the Pd: CdTe QDs was studied. The Pd: CdTe QDs with excellent photostability and biocompatibility, exhibited a greenish emission at 529 nm. Interestingly, these nanoparticles display high fluorescence sensitivity to diazinon (DZN). Under optimal conditions, a proposed sensor was designed based on Pd: CdTe QDs which represented a wide range of linear response (2.3-100 µM), low detection limit [3.3 nM, (S/N = 3)], high stability, and selectivity. Additionally, the newly sensing nanoprobe was used for the determination of DZN in environmental water samples with satisfactory results.

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“…At present, the most common photoanode in quantum dot sensitized solar cells is porous film composed of semiconductor nanoparticles, such as ZnO, SnO 2 and TiO 2 . The disordered packing of this zero‐dimensional structure causes a large number of grain boundaries in the porous film.…”

Section: Introductionmentioning

confidence: 99%

Preparation and photoelectrochemical properties of CdS quantum dot‐sensitized ZnO nanotube arrays

Zhao

Tian

Luo

et al. 2019

Int J Applied Ceramic Tech

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CdS/ZnO nanotubes (NTs) arrays were synthesized on a transparent conductive glass (FTO) substrate by hydrothermal method, chemical bath etching and successive ionic layer adsorption and reaction (SILAR) method, which were used in semiconductor-sensitized photoelectrochemical cells (PECs). The crystal structure, morphology and photoelectrochemical conversion properties of different photoanodes were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), and electrochemical workstation. The results show a heterojunction has been formed between ZnO and CdS QDs. The ZnO NTs and CdS QDs played a remarkable controllability for PEC performances. The photoelectrochemical conversion efficiency of ZnO NTs photoanodes was 3 times that of ZnO nanorods (NRs) arrays photoanodes. After sensitization of CdS quantum dots, the photoelectrochemical conversion efficiency of CdS/ZnO NRs was improved by 7 times and the CdS/ZnO NTs was increased by 4 times. These results demonstrate that the CdS/ZnO core-shell structure can provide a facile and compatible frame for the potential applications in nanotube-based solar cells. K E Y W O R D S cadmium sulfide, electromechanical properties, zinc oxide | 2475 ZHAO et Al.At present, the most common photoanode in quantum dot sensitized solar cells is porous film composed of semiconductor nanoparticles, such as ZnO, 3 SnO 2 4 and TiO 2 . 5 | 2481ZHAO et Al.

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Enhancement in efficiency of CdS/CdSe quantum dots-sensitized solar cells based on ZnO nanostructures by introduction of MnS layer

Cited by 16 publications

References 17 publications

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

Electrochemical Fingerprint of CuS-Hexagonal Chemistry from (Bis(N-1,4-Phenyl-N-(4-Morpholinedithiocarbamato) Copper(II) Complexes) as Photon Absorber in Quantum-Dot/Dye-Sensitised Solar Cells

Preparation, characterization and cell cytotoxicity of Pd-doped CdTe quantum dots and its application as a sensitive fluorescent nanoprobe

Preparation and photoelectrochemical properties of CdS quantum dot‐sensitized ZnO nanotube arrays

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