One-dimensional II–VI nanostructures: Synthesis, properties and optoelectronic applications

Jie, Jiansheng; Zhang, Wenjun; Bello, I.; Lee, Chun‐Sing; Lee, Shuit‐Tong

doi:10.1016/j.nantod.2010.06.009

Cited by 295 publications

(153 citation statements)

References 178 publications

(227 reference statements)

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“…The particle size and morphology of these nanomaterials can be easily changed and hence, enhancement in their various properties, such as reactivity, strength, optoelectronic, * E-mail: sureshlakhanpal@gmail.com electrical, magnetic behavior etc., and finally their potential applications, can be achieved. Binary semiconductors (group II -VI) in various nanoforms have many scientific and technological applications [7][8][9]. CdS is a promising binary II -VI semiconductor used in variety of optoelectronic applications, including solar cell windows, laser communication, photoconductors, field effect transistors, sensors, photocatalysts, biological indicators, light emitting diodes, etc.…”

Section: Introductionmentioning

confidence: 99%

Stable phase CdS nanoparticles for optoelectronics: a study on surface morphology, structural and optical characterization

Kumar

Sharma

2016

Materials Science-Poland

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This work presents a study on the surface morphology, structure and optical behavior of stable phase cadmium sulphide (CdS) nanoparticles synthesized via co-precipitation technique. Scanning electron microscopy (SEM) analysis has been employed to study a cluster formation in the aggregated nanoparticles. An image analysis approach using ImageJ has been used to measure the size of nanoparticles from the SEM micrographs. Fourier transform infrared spectroscopic (FT-IR) analysis identified absorption peaks of Cd-S stretching along with moisture content. X-ray diffraction (XRD) analysis showed that CdS nanoparticles crystallized in wurtzite structure with a preferential orientation along (0 0 2) plane. The particle size, microstrain and lattice constants have been evaluated using XRD data. The lattice parameters of these nanoparticles were found to be shorter than the bulk value which led to lattice contraction. The optical absorption study showed a blue shift in the fundamental absorption edge indicating a quantum size effect.

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Section: Introductionmentioning

confidence: 99%

Stable phase CdS nanoparticles for optoelectronics: a study on surface morphology, structural and optical characterization

Kumar

Sharma

2016

Materials Science-Poland

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“…17 Metals, such as Mn, Cu, Co, Fe, Ga are chosen as dopants for ZnS nanostructures using various techniques, such as thermal evaporation, sol gel processing, co precipitation, microemulsions, wet chemical methods, etc. 18 Different visible emission bands have been observed emanating from these dopants, for example, orange luminescence from 4 T 1 -6 A 1 transition of Mn in ZnS:Mn doped nanoparticles, 19 red emission from Eu doped ZnS, 20,21 green emission attributed to 3d transition of Cu in ZnS:Cu doped nanoparticles. 22,23 The defect states related to Cd 24 and Fe 25 have also given rise to green emission in 1-D ZnS nanostructures doped with Cd and Mn/Fe.…”

Section: Introductionmentioning

confidence: 99%

“…Among many dopants, Mn has gained much attention due to its efficient light emitting properties from the application point of view. 18 However, incorporation of dopant causes structural imperfections in the host lattice symmetry due to number of factors, such as difference in the ionic sizes, oxidation states and electronegativity. It can also alter the concentration of intrinsic defects and thus affect the physical properties.…”

Section: Introductionmentioning

confidence: 99%

The pronounced role of impurity phases in the optical properties of Mn catalyzed ZnS nanostructures

et al. 2015

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We report the effect of Mn self-doping in Mn catalyzed ZnS nanostructures grown via vapor liquid solid mechanism, which also resulted in the formation of additional impurity minority phases like ZnO and MnO 2 . The synthesized ZnS nanostructures were subsequently annealed in the range of 500 • C -700 • C in an inert environment to remove impurity phases and enhance the incorporation of dopant. Room temperature photoluminescence showed strong defect assisted luminescence. It was observed that green emission due to intrinsic defects of ZnS nanostructures was reduced in magnitude and Mn related orange/red luminescence increased in magnitude in nanostructures annealed at high temperature. The presence of impurity phases led to the observation of surface optical and interface phonon modes as observed in the Raman spectroscopy. Dielectric continuum and phonon confinement models were employed to determine the correlation lengths of the optical phonon modes. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx

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“…[1][2][3][4][5][6][7][8][9][10][11][12] Also, enormous research has been done on nanoparticles 6 , nanowires [7][8][9] and nanocomposites [10][11] to develop low-temperature processed photovoltaic (PV) cells. Because of the possibility of solution processing, colloidal quantum dots (CQDs) are appropriate for large area, low cost solar cells.…”

Section: Introductionmentioning

confidence: 99%

The investigation of the influence of back contact metal and ligand exchanging on the air stability of ambient processed schottky Photovoltaic Cells Based on PbSe CQDs

Shishehbori¹,

Abdolhosseinzadeh²,

Seyedmir³

et al. 2012

Orientjchem.

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In this work we fabricated and tested nanocrystalline schottky solar cells based on PbSe CQDs. Crystalline and monodisperse PbSe capped oleic acid CQDs were synthesized through hot injection reaction. From absorption peak and narrow photoluminescence peak of QDs in solution, CQDs size (~3 nm) and monodispersity of CQDs were determined. Photovoltaic cell structure is formed from PbSe QDs sandwiched between Al (or Ag) and ITO electrodes as electron and hole transporter layers, respectively. Current-Voltage characteristics showed carrier separation mechanism consistent with schottky device structure. The best efficient cell obtained, without any nanocrystalline film thickness optimization, with ITO\PbSe QDs\LiF\Al structure showed a PCE of 0.55%. Furthermore, oleylamine based devices with Ag as back contact exhibited the most durable cells with the life time of 21 h and survival until 5 days.

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One-dimensional II–VI nanostructures: Synthesis, properties and optoelectronic applications

Cited by 295 publications

References 178 publications

Stable phase CdS nanoparticles for optoelectronics: a study on surface morphology, structural and optical characterization

Stable phase CdS nanoparticles for optoelectronics: a study on surface morphology, structural and optical characterization

The pronounced role of impurity phases in the optical properties of Mn catalyzed ZnS nanostructures

The investigation of the influence of back contact metal and ligand exchanging on the air stability of ambient processed schottky Photovoltaic Cells Based on PbSe CQDs

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