Optics optoelectronics
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The development a of highly efficient self-powered photodetector is a critical area of research for optoelectronic applications and the Internet of Things (IoT). In2S3 thin films grown using the spray pyrolysis technique were used rto develop self-powered photodetectors. The structural, optical, morphological, elemental, compositional and electrical characterization of the thin films were carried out for optimization.
15p visergeyne 18-06-2024 0 0 Download
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Metal chalcohalides are promising candidates for next-generation technologies that include energy conversion, information storage, and quantum computing. Among them, antimony selenoiodide (SbSeI) has received rising interest for different optoelectronic devices, including photovoltaics, due to its bandgap energy, strong optical absorption, stability, and earth abundant, low-cost, and low toxicity constituents.
9p visergeyne 18-06-2024 2 0 Download
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Ebook "Nonequilibrium carrier dynamics in semiconductors: Proceedings of the 14th International conference, July 25-29, 2005, Chicago, USA" is a well-established, specialist conference, held every 2 years, covering a range of topics of current interest to R&D in semiconductor physics/materials, optoelectronics, nanotechnology, quantum information processing. Papers accepted for publication are selected and peer-reviewed by members of the Program Committee during the conference to ensure both rapid and high-quality processing.
370p manmanthanhla0201 26-02-2024 3 1 Download
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Ebook "Heavily-doped 2D-quantized structures and the Einstein relation" presents the Einstein Relation(ER) in two-dimensional (2-D) Heavily Doped (HD) Quantized Structures. The materials considered are quantized structures of HD non-linear optical, III-V, II-VI, Ge, Te, Platinum Antimonide, stressed materials, GaP, Gallium Antimonide, II-V, Bismuth Telluride together with various types of HD superlattices and their Quantized counterparts respectively.
381p lucchinguyen 28-12-2023 5 2 Download
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Electrochemical polymerisation of 3-hexylthiophene (3HT) and electrochemical copolymerisation of 3HT and N-benzoyl dithienopyrrole (BDP) were performed to prepare polymer and copolymer films using a linear sweep voltammetry potentiostatic technique with a voltage range from 1.7-1.8 V and a scan rate of 0.1 mV/s.
7p vimichaelfaraday 28-12-2023 4 3 Download
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One-dimensional Al-doped CdS nanobelts were synthesized for the first time via chemical vapor deposition. The vertically synthesized Cd1-xAlxS nanobelts (x ¼ 0e3.09) exhibited high crystallinity. We have reported here an investigation of optical and electrical properties of prepared nanobelts for potential applications in nano-optoelectronics.
7p viberbers 09-08-2023 5 3 Download
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This paper, we report the synthesis of CdSe thin film by SILAR technique. The effects of immersion cycles on the structural, morphological, optical and electrical properties of SILAR deposited CdSe thin films were studied.
6p viberbers 09-08-2023 5 4 Download
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In this study, p-type transparent tin oxide (SnO2) based semiconductor thin films were deposited onto glass substrates by sol-gel dip-coating method using samarium-trifluoride (SmF3) as acceptor dopant.
8p viwarmachine 01-07-2023 7 3 Download
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Core/shell hetero-nanostructures are promising materials for fabricating optoelectronic devices, photodetectors, bioimaging, and biosensing. The CdSe/CdS core/shell nanocrystals (NCs) were synthesized in a wet chemical reaction. The shell thickness was modified by varying reaction times.
6p vispiderman 15-06-2023 3 2 Download
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ZnO:Ni powders are prepared by forced hydrolysis method. The samples were investigated by using XRD, SEM and photoluminescence (PL) spectra. The intensity of near band gap photoluminescence as a function of doping concentration and temperature was studied. The researching results show the doping concentration of Ni strongly affected the luminescence in the UV spectral region and reveal application potential of ZnO:Ni material in optoelectronic and magneto-optical devices of UV range.
6p thienlangso 15-12-2021 13 0 Download
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A series of new push–pull chromophores were synthesized in moderate to very high yields (65%–97%) by treating TCNE and TCNQ with alkynes substituted by electron-rich diethylaniline and polycyclic aromatic hydrocarbons. Some of the chromophores exhibit strong intramolecular charge-transfer bands in the near-IR region with λmax values between 695 and 749 nm. With the help of experimental and theoretical analysis, it is concluded that the trend in λmax values is affected by PAH substituents sterically, not electronically.
50p tudichquannguyet 29-11-2021 7 0 Download
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The objectives of the thesis: Research, fabricate Er3+-doped silica glass microspheres with different sizes by arc discharge method; building an experimental system to investigate WGM mode laser emission spectrum in the optical communication wavelength region ~ 1550 nm of some fabricated microspheres.
28p extraenglish 24-05-2021 13 3 Download
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The main theme of the dissertation: The dissertation targets the basic research on the physical models and new structures; calculating and simulating the bistable devices using 1D, 2D PhC structures. The effects of the PhC configuration and structural parameters on the optical characteristics and working performance of bistable devices will be investigated.
28p extraenglish 24-05-2021 16 3 Download
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The optical properties, morphology and structures of ZnO:Cu NRs were investigated through out of measurement the scanning electron microscopy, X-Ray diffraction and ultraviolet-visible spectroscopy, respectively. The results show the Cu doped ZnO NRs were uniformly and dense grown on mogul substrates, well oriented in the (002) plane. Additionally, the light absorption can be significantly enhanced to more 10% in a wide spectral range (400-800 nm) due to the reduce reflection.
8p nguaconbaynhay11 07-04-2021 16 2 Download
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The dissertation targets the basic research on the physical models and new structures; calculating and simulating the bistable devices using 1D, 2D PhC structures. The effects of the PhC configuration and structural parameters on the optical characteristics and working performance of bistable devices will be investigated.
28p capheviahe27 23-02-2021 11 3 Download
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Semiconductors nanoparticles have quantum size effects and non-linear optical characteristics as well as high quantum efficiency, making them next-generation materials that can be applied in various optoelectronic devices. Semiconductor nanoparticles have attracted much attention because of their novel electric and optical properties originating from surface and quantum confinement effects.
5p tamynhan5 10-12-2020 10 2 Download
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In this paper, one-dimensional photonic crystal distributed feedback structures were chosen for simulating the photonic modes. The corresponding photonic bands were calculated by using a numerical method for solving the master equation, while the reflectivity spectra of the structures were simulated by using a rigorous coupled wave analysis method.
9p tamynhan4 06-09-2020 15 1 Download
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Theoretical simulations were designed by first principles approach of density functional theory to investigate the structural and optoelectronic properties of different structural classes of perylene; isolated perylene, diindeno[1,2,3cd:1′,2′,3′-lm]perylene (DIP) molecule and DIP molecular crystal.
9p vijiraiya2711 27-05-2020 15 1 Download
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A series of D–A dyads and D–A–D triads molecular systems based on triphenylamine and 9-ethyl-carbarzole as donor (D) and BODIPY as acceptor (A) has been designed and synthesized. The optoelectronic properties including optical, electrochemical, and charge carrier mobility of these molecules have been investigated.
9p vijiraiya2711 27-05-2020 10 0 Download
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Objective of the thesis: Successfully fabricate Cu2O thin film having good crystal structure. Fabricate layers protecting Cu2O electrode from photocorrosion. Study the photocatalytic, electro-photocatalytic water splitting properties of the Cu2O electrode.
29p xacxuoc4321 08-07-2019 15 5 Download