Sensitized solar cell from type-II CdTe/CdSe core/shell nanocrystals synthesized without seed purification at low temperature

Patil, Padmashri; Laltlanzuala, C.; Datta, Shouvik

doi:10.1016/j.jallcom.2014.04.072

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…11 CdSe QDs display a direct band gap of 1.74 eV, which makes their use in solar cells and other electronic devices feasible. [10][11][12][13][14] Reactions in organic media constitute the main route to obtain CdSe QDs. [15][16][17] These synthetic approaches produce highquality optical nanoparticles 18 with narrow size distribution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Optical Characterization, and Size Distribution Determination by Curve Resolution Methods of Water-Soluble CdSe Quantum Dots

et al. 2016

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In this work a colloidal approach to synthesize water-soluble CdSe quantum dots (QDs) bearing a surface ligand, such as thioglycolic acid (TGA), 3-mercaptopropionic acid (MPA), glutathione (GSH), or thioglycerol (TGH) was applied. The synthesized material was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), UV-visible spectroscopy (UV-Vis), and fluorescence spectroscopy (PL). Additionally, a comparative study of the optical properties of different CdSe QDs was performed, demonstrating how the surface ligand affected crystal growth. The particles sizes were calculated from a polynomial function that correlates the particle size with the maximum fluorescence position. Curve resolution methods (EFA and MCR-ALS) were employed to decompose a series of fluorescence spectra to investigate the CdSe QDs size distribution and determine the number of fraction with different particle size. The results for the MPA-capped CdSe sample showed only two main fraction with different particle sizes with maximum emission at 642 and 686 nm. The calculated diameters from these maximum emission were, respectively, 2.74 and 3.05 nm.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Optical Characterization, and Size Distribution Determination by Curve Resolution Methods of Water-Soluble CdSe Quantum Dots

et al. 2016

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“…It has been shown that use of CdTe/CdSe core/shell nanocrystals prepared by the one-pot synthesis method without core seed purification could make structural and optical properties of nanocrystals comparable to the nanocrystals synthesized using purified core seed, which can give higher absorption and better crystallinity [33]. Neo et al have investigated the effect of shell thickness and surface passivation as another strategy to improve the efficiency of type II PbS/CdSbased solar cells [34].…”

Section: Introductionmentioning

confidence: 99%

Efficiency Enhanced Colloidal Mn‐Doped Type II Core/Shell ZnSe/CdS Quantum Dot Sensitized Hybrid Solar Cells

Jamshidi

Yuan

Chmyrov

et al. 2015

Journal of Nanomaterials

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Colloidal Mn-doped ZnSe/CdS core/shell quantum dots (QDs) are synthesized for the first time and employed as a strategy to boost the power conversion efficiency of quantum dot sensitized solar cells. By using Mn-doping as a band gap engineering tool for core/shell QDs an effective improvement of absorption spectra could be obtained. The mid-states generated by a proper Mn content alleviate carrier separation and enhance the electron injection rate, thus facilitating electron transport to the TiO2substrate. It is demonstrated that a device constructed with 0.25% Mn-doped ZnSe/CdS leads to an enhancement of the electron injection rate and power conversion efficiency by 4 times and 1.3, respectively.

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“…Among these widely used semiconductor materials, Cadmium Telluride (CdTe) attracted intensive attention due to its high absorption coefficient (5.1 Â 10 5 /cm), high chemical stability and availability and shown promising for solar energy utilization [9][10][11][12][13][14]. At present, CdTe thin films have been successfully synthesized by several methods, including magnetron sputtering, hydrothermal method, electrochemical deposition, close space sublimation, vapor-liquid-solid and high vacuum thermal evaporation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of CdTe/NiTe films on Ni foils by radio-frequency magnetron sputtering method

Zhou

Yao

et al. 2015

Journal of Alloys and Compounds

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Sensitized solar cell from type-II CdTe/CdSe core/shell nanocrystals synthesized without seed purification at low temperature

Cited by 11 publications

References 31 publications

Synthesis, Optical Characterization, and Size Distribution Determination by Curve Resolution Methods of Water-Soluble CdSe Quantum Dots

Synthesis, Optical Characterization, and Size Distribution Determination by Curve Resolution Methods of Water-Soluble CdSe Quantum Dots

Efficiency Enhanced Colloidal Mn‐Doped Type II Core/Shell ZnSe/CdS Quantum Dot Sensitized Hybrid Solar Cells

Fabrication of CdTe/NiTe films on Ni foils by radio-frequency magnetron sputtering method

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