Electric power consumption in KWh Per capita is a key factor determining the progress of technological growth and socio-economic development any country. Bangladesh lower middle-income country, its population density around 1118 per square kilometer. The vision country to become high-income nation by year 2041. Governed this vision, net electricity demand forecasted 61 GW generating sector largely depends on natural gas since reserve higher compared all other fossil fuel-based energy...

We report the effect of substrate temperature (25–300 °C) on structural, optical and electrical properties Cadmium Sulphide (CdS) thin films deposited onto glass by Radio Frequency (RF) magnetron sputtering. The morphological, were characterized X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), UV–VIS-NIR spectroscopy Hall Effect measurement respectively. XRD studies showed that polycrystalline with hexagonal wurtzite structure preferentially oriented along (0 0...

In copper zinc tin sulfide (CZTS) based thin films, antisite (CuZn) represents the major p-type acceptor defect with low formation energy. This can create defect-dominated carrier recombination hotspots, which reduces power conversion efficiency. Extrinsic doping in cationic sites of CZTS film during synthesis is an effective way to passivate this defect. It has previously been reported that employing Cd as a dopant and improve quality. Injecting toxic into non-toxic may more problems than...

The CdS thin film is widely used for numerous applications such as in optoelectronic devices, solar cells, LEDs, photonics devices etc. ultra-thin layer commonly by or window CdTe, CIS, CIGS, CZTS thin-film cells. has high bandgap of 2.42 eV and transparent after 510 nm wavelength. excellent optoelectronics properties material are very attractive hetero-junction partner (n-type) There several fabrication techniques to deposit Screen Printing, Thermal Evaporation (TE), Molecular Beam Epitaxy...

The demand of energy is growing rapidly in response the development world. crucial solution large amount to harvest alternative source energy. Sustainable can be possible by harvesting solar as it smoke free, clean and environment friendly. For low cost, non-toxic earth abundant feature, CZTS cell very prominent generate power. During this study, numerical analysis has been done SCAPS 2802 simulator examine performance with Indium Sulphide (InSe) buffer layer. In research work, proposed...

This paper explores the prospects of Aluminium Antimonide (AlSb) as an efficient, cost effective and stable ultrathin solar cell. AlSb has been drawn attention to researchers prospective binary semiconductor material using current cell technology. The BSF strategy is used in this research work find out yet be discovered hidden potentiality Copper Telluride (CrnTe) layer investigate proposed structure for better performance with preservation. It explored that, insertion Cu2Te base...

The fundamental objective of this paper is to describe the design and implementation a magnetic levitation system using phase lead compensation technique. It also verifies possibility implementing with equipments available in Bangladesh nominal expenditure. Magnetic phenomenon suspending an object space force. By overcoming pull gravitational force, maglev can levitate into force actuator proper controlling methods. theoretical background studied from mathematical perspective that leads...

Energy consumption is growing rapidly day by since the development directly proportional to use of electricity. The conventional sources energy are diminishing in response huge consumption. So, burning question explore new non-conventional meet enormous demand. Solar considered as potential source alternative build up sustainable development. Molybdenum Telluride (MoTe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) a very promising...

The "Tongue Drive System" (TDS) is a wireless assistive technology (AT) which operated by using tongue motion has minimum invasion & also no obstruction to daily activities. This system can enable those people who have high spinal cord injuries such as the tetraplegia patient move around with quite ease even giving them some ability control their surrounding environment. TDS transforms movement of into user's command i.e. intention in specific direction. In our work used direction powered...

The Copper Zinc Tin Sulfide (CZTS) is considered as one of the promising semiconductor materials in Kesterite family for potential solar cells absorber material. This work focuses on numerical model and simulation efficient CZTS based thin-film cell. Popular cell simulator wxAMPS was used (Al:ZnO/i-ZnO/CdS/CZTS/Mo)structured effects different layer properties performance parameters were analyzed. An optimized with 15.84% (%FF=72.86, Voc=0.78Volt Jsc=27.98 mA/cm <sup...

This paper describes the implementation and investigation functionality of GE 3.6 MW Wind Turbine model implemented in Matlab <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> Simulink when exposed to a wind-step. The robustness is tested by varying aerodynamic parameters C <sub xmlns:xlink="http://www.w3.org/1999/xlink">p, max</sub> λ xmlns:xlink="http://www.w3.org/1999/xlink">opt</sub> . It found that, operate as expected different wind...

This paper focuses on the determination of active personal space (APS) for a service robot based emotional status. is required human-robot interaction at ease. Here, APS means distance (relative during and action) between human. function emotion both in human robot. The other factors which are considered here age, height, familiarity with robot, relative motion According to these factors, changes shown graphs. During experiments two emotions considered: normal angry. causes variation modes...

CdS thin-films deposited by CBD offers ultrathin films along with the good structural, electrical and optical properties within a very low processing cost. were technique as annealed at 200°C 400°C temperature under vacuum environment. The characterized X-ray diffraction UV-Visible near infrared spectroscopy. A comparative study of crystallographic between investigated. Analysis on structural showed that thin offer much better crystallinity less lattice defects compared to films. Near about...

Earth abundant and ecofriendly zinc sulphide (ZnS) is a direct wide band gap semiconductor material applications of ZnS thin-films cover large area including optoelectronic devices. As are highly defective depending on fabrication process, prior to final target applications, properties should be studied first. This study was motivated apply thin-film as an alternative buffer layer in chalcogenide based multilayer solar cell (TFSC) e.g. CZTS using reliable clean deposition technique. reports...

This paper has focussed on the step-by-step design of a high frequency air-cored resonance transformer commonly called Tesla coil. work concentrates and construction medium sized (1–3 kW) versatile coil that can be easily used for measurements general research. The task is, therefore, to minimise number stochastic unknown parameters influencing device functionality pointing out pros cons each solution. physical dimension been chosen purpose pursuing accomplishment an undergraduate project...

Ultrathin and compact CdS:O/CdS bilayer window in CdTe solar cells has higher potential for enhanced p-type doping, reduced Te diffusion, improved power conversion efficiency (PCE) compared to traditional single-layer CdS or CdS:O windows. In this effort, we used a two-gun RF sputtering equipment deposit CdS:O(~50nm)/CdS(~50 nm) bilayers onto the borosilicate ITO-coated glass substrates at low temperature (≤ 250 oC). Intriguingly retain its hexagonal {0002} preferential orientation but with...

Band offsets limit charge carrier mobility at the interface and diminish power conversion efficiency in heterojunction solar cell devices. As a buffer layer, CdS often serves as an n-type counterpart to p-type CZTS. ZnS could replace due its better lattice matching with This study looks how bands line up interfaces, specifically CZTS/CdS CZTS/ZnS, see if it is possible use instead of CZTS absorber. On substrates made soda-lime glass, thin films were deposited. We deposited CZTS, CdS, using...

Cadmium Sulfide (CdS) thin-films were deposited by RF magnetron sputtering at different power ambient and their structural properties studied to observe the effect of conditions on CdS films. is widely used buffer layer for chalcopyrite based photovoltaic cells requires good crystalline property less dislocation density as well strain in conjunction with a thinner ensures quality. The films characterized X-ray diffraction (crystal type, lattice alignment, constant, size, microstrain,...

In high performance chalcogenide based thin-film solar cells, a bilayer intrinsic and doped zinc-oxide (ZnO) n-type stacks are used as window layer. Intrinsic ZnO aluminum-doped thin-films were deposited on soda lime glass substrates using the standard recipe by radio-frequency (RF) magnetron sputtering with thickness 80 nm 350 respectively. The structural, optical electrical properties of studied various characterization techniques such X-Ray Diffractometry (XRD), UV-Vis spectroscopy...