Synthesis of thiol modified CdSe nanoparticles/P3HT blends for hybrid solar cell structures

Soosaimanickam, Ananthakumar; Ramkumar, J.; Babu, S. Moorthy

doi:10.1016/j.mssp.2014.02.008

Cited by 27 publications

(5 citation statements)

References 28 publications

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“…Fluorescent semiconductor nanocrystals (NCs) or quantum dots (QDs) have plenty of advantageous properties, such as the possibility of tuning the luminescence wavelength by varying the physical size of the NCs and the capacity for forming stable colloidal solutions, which makes it possible to obtain coatings by inexpensive solution-process methods, and make QDs promising materials in optoelectronic, bioimaging, lighting, and other applications [1][2][3][4][5]. Today, light-emitting devices (LEDs) based on organic compounds (OLEDs) prevail in commercial lighting and display appliances.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the PMMA Electron-Blocking Layer of Quantum Dot Light-Emitting Diodes

et al. 2021

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Quantum dots (QDs) are promising candidates for producing bright, color-pure, cost-efficient, and long-lasting QD-based light-emitting diodes (QDLEDs). However, one of the significant problems in achieving high efficiency of QDLEDs is the imbalance between the rates of charge-carrier injection into the emissive QD layer and their transport through the device components. Here we investigated the effect of the parameters of the deposition of a poly (methyl methacrylate) (PMMA) electron-blocking layer (EBL), such as PMMA solution concentration, on the characteristics of EBL-enhanced QDLEDs. A series of devices was fabricated with the PMMA layer formed from acetone solutions with concentrations ranging from 0.05 to 1.2 mg/mL. The addition of the PMMA layer allowed for an increase of the maximum luminance of QDLED by a factor of four compared to the control device without EBL, that is, to 18,671 cd/m2, with the current efficiency increased by an order of magnitude and the turn-on voltage decreased by ~1 V. At the same time, we have demonstrated that each particular QDLED characteristic has a maximum at a specific PMMA layer thickness; therefore, variation of the EBL deposition conditions could serve as an additional parameter space when other QDLED optimization approaches are being developed or implied in future solid-state lighting and display devices.

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Section: Introductionmentioning

confidence: 99%

Optimizing the PMMA Electron-Blocking Layer of Quantum Dot Light-Emitting Diodes

et al. 2021

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“…The nanostructured materials of II-VI group have attracted great interest due to theirs optical and electrical properties which depend strongly on their size. This is the case of CdSe (cadmium selenide), where their physical properties (electrical and optical) are better when it is synthesized in nanometric scales which behavior like a quantum dot [1][2][3][4][5][6][7].…”

Section: Introduction mentioning

confidence: 99%

Morphological Characterization with STM and SEM of CdSe Nanostructures in Function of pH

Legorreta¹,

Francisco²,

Sanabria³

et al. 2019

JMSE-A

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In this paper, we have interest in the CdSe (cadmium selenide) semiconductor due to their physical and optical properties that depend on their morphology and size, as well as their possible applications in electronic and optoelectronic fields, for example, in the fabrication of solar cells or nanotransistors. For this reason, we synthetized nanoparticles of CdSe using the colloidal method, and varied the pH value: 8 to 12, to know the effect of pH on the samples. The nanoparticles were characterized using the SEM (scanning electron microscope) and STM (scanning tunneling microscope) to know the morphology and electronic cloud on the surface of the samples. In each case, we found different sizes (from 6 to 11.5 nm) and shapes as filaments (fibbers), bars and spheres of CdSe nanoparticles and the 3D-FFT was obtained too.

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“…In semiconductor nanoparticles, strong confinement effect appears when the size of the nanoparticles is compared to the exciton Bohr radius in a bulk substitute. And they possess unique physical and optical properties, which have attracted tremendous attention from researchers in the last two decades [1][2][3][4][5]. Semiconductor nanocrystals embedded or encapsulated in polymeric materials play an important role in manufacturing optical and electronic devices because of their enhanced optical, mechanical and thermal properties [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of CdS-hyperbranched poly(arylene ether ketone) nanocomposite materials

Zhang

Jiang

2017

Plastics, Rubber and Composites

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A new kind of CdS-hyperbranched poly (arylene ether ketone) (HP-PAEK) nanocomposite was prepared in dimethylformamide solution by carboxylic-functionalised HP-PAEK as surface modifier without ligand exchange. The CdS/HP-PAEK nanocomposites were characterised through ultraviolet-visible and photoluminescence spectroscopy. The experimental results of photoluminescence measurement showed that the nanocomposites had obvious luminescence properties. The formation and size of CdS quantum dots were determined by Fourier transform infrared spectroscopy and transmission electron microscopy. The thermal properties of CdS/HP-PAEK nanocomposites were analysed by differential scanning calorimetry and thermogravimetric analysis. Owing to the introduction of CdS nanoparticles, the nanocomposites exhibited excellent heat resistance and higher fluorescent quantum efficiency.

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Synthesis of thiol modified CdSe nanoparticles/P3HT blends for hybrid solar cell structures

Cited by 27 publications

References 28 publications

Optimizing the PMMA Electron-Blocking Layer of Quantum Dot Light-Emitting Diodes

Optimizing the PMMA Electron-Blocking Layer of Quantum Dot Light-Emitting Diodes

Morphological Characterization with STM and SEM of CdSe Nanostructures in Function of pH

Preparation and performance of CdS-hyperbranched poly(arylene ether ketone) nanocomposite materials

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