A5036207691- Silicon and Solar Cell Technologies
- Thin-Film Transistor Technologies
- Semiconductor materials and interfaces
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Semiconductor materials and devices
- solar cell performance optimization
- Nanowire Synthesis and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Advancements in Semiconductor Devices and Circuit Design
- Photovoltaic System Optimization Techniques
- Silicon Nanostructures and Photoluminescence
- Quantum Dots Synthesis And Properties
- Optical Coatings and Gratings
- Integrated Circuits and Semiconductor Failure Analysis
- Engineering Applied Research
- Nanomaterials and Printing Technologies
- Semiconductor Lasers and Optical Devices
- Catalytic Processes in Materials Science
- Optical properties and cooling technologies in crystalline materials
- ZnO doping and properties
- Additive Manufacturing Materials and Processes
- Surface Modification and Superhydrophobicity
- Advanced Surface Polishing Techniques
Karadeniz Technical University
2016-2024
University of Hyogo
2014-2019
Hyogo University
2017
Tokyo University of Agriculture and Technology
2008-2013
Tin-doped indium oxide (ITO) sputtering is known as a damaging cause on organic hole transporting material in solar cells. In order to gain more insights into the reasons for poor device performance of perovskite cells by ITO Spiro-OMeTAD, here we present an in-depth study I–V simulation analysis using corresponding equivalent circuit models. First, experimental data were obtained with ⟨FTO/TiO2(dense)/TiO2(mesoporous)/CH3NH3PbI3/Spiro-OMeTAD/ITO/Au⟩ configuration. An Au layer (t = 50 nm)...
Abstract This study introduces CeO 2 /SiO double-layer film stacks and its antireflection coating effect. Optical properties were analyzed by spectrophotometer measurements; surface morphology cross-sections observed Scanning Electron Microscopy (SEM); elemental distributions crystallographic determined Energy Dispersive Spectroscopy (EDS) X-ray Diffraction (XRD) measurements. Average reflectance of single-layer 0.3MSiO , 0.6MSiO 0.3MCeO thin films 30.54%, 20.12%, 14.23%, respectively. was...
Perovskite and textured silicon solar cells were integrated into a tandem cell through stacking method. To consider the effective structure of for perovskite/silicon cells, optic photovoltaic properties flat surfaces compared using mechanical-stacking-tandem two- four-terminal structures by perovskite layers on crystal wafers. The reflectance texture surface in range 750-1050 nm could be reduced more than that (from 2.7 to 0.8%), which resulted increases average incident photon current...
Abstract An Al 2 O 3 /TiO double layer anti‐reflection coating ( ARC ) film formed by spray pyrolysis was introduced for monocrystalline silicon solar cells as the nonvacuum processing method. The thickness of and TiO compact controlled volume deposited precursor solution confirmed ellipsometry scanning electron microscopy. average photovoltaic properties photocurrent density J sc ), open‐circuit photovoltage V oc fill factor FF photo energy conversion efficiency η were 37.0 mA /cm , 590 mV...
Engineering of photonics for antireflection and electronics extraction the hole using 2.5 nm a thin Au layer have been performed two- four-terminal tandem solar cells CH3NH3PbI3 perovskite (top cell) p-type single crystal silicon (c-Si) (bottom by mechanically stacking. Highly transparent connection multilayers evaporated-Au sputtered-ITO films were fabricated at interface to be point-contact tunneling junction between rough flat cells. The stacked cell with an optimized structure was...
Herein, Cs 4 CuSb 2 Cl 12 double perovskite is optimized as an absorber layer for solar cells (PSCs). Special attention given to the design of cell with a single hole transfer (single‐HTL) or (double‐HTL). Optimizations and HTL are performed parameters including thickness, defect density, mobility, absorption coefficient, capture cross section. Parameters cells, energy bands, recombination characteristics examined in detail, optimum values determined considering practical applications....
Abstract In this study, it is aimed to produce triple layer TiO2/HfO2/SiO2 thin films by spin coating method and minimize optical losses. The characterizations in the study were primarily carried out using XRD, SEM transmittance reflectance analyses. average (400-700 nm) of single SiO2, TiO2 HfO2 film coated silicon substrates obtained as 93.7%, 82.9% 86.62%, respectively. transmittances for double TiO2/HfO2 Triple 89.41% 95.44%, band gap values TiO2, SiO2 produced calculated 3.89 eV, 5.62...
Using the simple and cost-effective methods, spin-coated ZrO 2 -polymer composite/spray-deposited TiO -compact multilayer antireflection coating film was introduced. With a single on surface of crystalline silicon wafer, 5.3% average reflectance (the between wavelengths 300 nm 1100 nm) observed. Reflectance decreased further down to 3.3% after forming spray-deposited film. Silicon solar cells were fabricated using CZ-Si p-type wafers in three sets: (1) without (ARC) layer, (2) with ARC film,...
In this study, Silicon Dioxide (SiO2) thin films processed by the spin coating method was studied with prepared solutions. Antireflection effect of deposited SiO2 on crystalline silicon substrates analyzed after optimizing solution, deposition, and thermal treatment processes. The ethanol dilution solution investigated as well. Spectrophotometer reflectance measurements, Scanning Electron Microscopy (SEM) measurements Afors-het based simulations were carried out. For films, annealing...
Perceiving the role of each layer relevant to parameters in a silicon solar cell is important for engineering structures high efficiencies. PC1D simulation cells were carried out this work evaluate performance and outcomes analyzed considering their effects final cell. Absorber layer, emitter antireflection coating back surface field studied especially terms doping levels, thicknesses, absorbance behavior performance. The short circuit current density (Jsc) found be directly proportional...
A non-vacuum processing method for preparing polymer-based ZrO2/TiO2 multilayer structure antireflection coating (ARC) films crystalline silicon solar cells by spin is introduced. Initially, ZrO2, TiO2 and surface deactivated-TiO2 (SD-TiO2) based were examined separately the effect of photocatalytic properties film on reflectivity was investigated. Degradation reflectance performance with increasing up to 2% in ultraviolet region confirmed. No significant change observed when utilizing...
Screen-printing aluminum is still dominantly used in the solar cell fabrication process. Ethyl cellulose one of main contents screen-printing pastes that require dichloromethane for its cleaning process, a substance renowned being extremely toxic and threatening to human body. Developing environmental friendly essential order provide an alternative commercial pastes. In this work, new, nontoxic polyvinyl alcohol-based are introduced. Polyvinyl alcohol was as soluble polymer can be...
The phosphorus barrier layers at the doping procedure of silicon wafers were fabricated using a spin-coating method with mixture silica-sol and tetramethylammonium hydroxide, which can be formed rear surface prior to front spin-on-demand (SOD) diffusion directly annealed simultaneously layer. optimization coating thickness was obtained by changing applied speed; from 2,000 8,000 rpm. CZ-Si p-type solar cells with/without layer after taking sheet resistance measurements, SIMS analysis, SEM...
In this work, we introduce a totally vacuum-free cost-efficient crystalline silicon solar cells. Solar cells were fabricated based on low-cost techniques including spin coating, spray pyrolysis, and screen-printing. A best efficiency of 17.51% was achieved by non-vacuum process with basic structure <AI/p+/p−Si/n+/SiO2/TiO2/Ag> CZ-Si p-type Short circuit current density (JSC) open voltage (VOC) the cell measured as 38.1 mA·cm−2 596.2 mV, respectively fill factor (FF) 77.1%. Suns-Voc...
Silicon solar cells and perovskite were fabricated by non-vacuum printed processes in our group. Screen-printing, spin coating spray pyrolysis deposition techniques utilized mainly. Low temperature processed TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layer Al O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> /TiO double introduced as an alternative anti-reflection film. In-house developed polyvinyl alcohol based aluminum...
Abstract Improvement of aluminum alloyed p + back surface fields (p BSF) which is an essential requirement for achieving high efficiency silicon solar cells has been important task. One the ways to have better quality BSFs can be introduce screen printable pastes with boron content. Two type were developed in this work and recipes provided detail: screen-printable paste without content (B-free-Al-paste), (Al-B-paste). The ingredients optimized basically evaluated terms alloying impurity...
Optimization of the back surface field (BSF) for crystalline silicon solar cells was carried out by Afors-Het simulation software. Thickness and doping concentration parameters were optimized electrical both with BSF non-BSF analyzed. The optimum thickness cell determined as 7 µm 1x1019 cm-3, respectively. A special attention given to estimation peak firing temperature considering printing amount aluminum paste in order form an optimal calculations using Al-Si binary phase diagram. It...