scholarly journals Synthesis of ZnO Nanowires and Their Photovoltaic Application: ZnO Nanowires/AgGaSe2Thin Film Core-Shell Solar Cell

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Elif Peksu ◽  
Hakan Karaagac
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Indium Tin Oxide ◽  
Zno Nanowires ◽  
Growth Time ◽  
Soda Lime Glass ◽  
Core Shell ◽  
Strong Impact ◽  
Wide Range ◽  
Thin Film Layer

In this investigation, hydrothermal technique was employed for the synthesis of well-aligned dense arrays of ZnO nanowires (NWs) on a wide range of substrates including silicon, soda-lime glass (SLG), indium tin oxide, and polyethylene terephthalate (PET). Results showed that ZnO NWs can be successfully grown on any substrate that can withstand the growth temperature (~90°C) and precursor solution chemicals. Results also revealed that there was a strong impact of growth time and ZnO seed layer deposition route on the orientation, density, diameter, and uniformity of the synthesized nanowires. A core-shell n-ZnO NWs/p-AgGaSe2(AGS) thin film solar cell was fabricated as a device application of synthesized ZnO nanowires by decoration of nanowires with ~700 nm thick sputtering deposited AGS thin film layer, which demonstrated an energy conversion efficiency of 1.74% under 100 mW/cm2of simulated solar illumination.

Synthesis of ZnO Nanowires by Hydrothermal Technique for Integration Into Chalcopyrite Thin Films

2012 ◽  
Vol 1406 ◽  
Author(s):  
H. Karaagac ◽  
M. Parlak ◽  
M. Saif Islam
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Seed Layer ◽  
Growth Parameters ◽  
Vertical Direction ◽  
Zno Nanowires ◽  
Growth Time ◽  
Silicon Substrates ◽  
Transmission Measurement ◽  
Hydrothermal Technique

ABSTRACTVertically oriented, highly dense ZnO nanowires (NWs) array was successfully grown on both glass and silicon substrates using hydrothermal technique. A systematic study was carried out to investigate the effects of growth parameters including growth time and thickness of ZnO seed layer on the quality of ZnO NWs in terms of their homogeneity and orientation in the vertical direction. The diameter as well as the length of grown ZnO NWs was found to be closely dependent on the thickness of the pre-coated ZnO seed layer. The structures of ZnO NWs and electron-beam evaporated AgGa0.5In0.5Se2 (AGIS) thin film have been characterized by X-ray diffraction measurements and optical properties were measured by transmission measurement. The optic band gap of AGIS thin film was found to be almost optimum (1.56 eV) to match the abundant part of solar cell spectrum. AGIS thin film was deposited on the synthesized ZnO NWs to form p-n heterojunction based inorganic solar cell, which exhibited photovoltaic behavior with a power conversion efficiency of 0.37 % under A.M (1.5) illumination.

Characteristics of Perovskite Solar Cells with ZnGa2O4:Mn Phosphor Mixed Polyvinylidene Fluoride Down-Conversion Layer

2021 ◽  
Vol 16 (6) ◽  
pp. 855-860
Author(s):  
Ji Yong Hwang ◽  
II Tae Kim ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Polyvinylidene Fluoride ◽  
Perovskite Solar Cells ◽  
Soda Lime ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Soda Lime Glass ◽  
Down Conversion

To reduce the manufacturing cost of perovskite solar cells, soda-lime glass and transparent conducting oxides such as indium tin oxide and fluorine-doped tin oxide are the most widely used substrates and lighttransmitting electrodes. However, the transmittance spectra of soda-lime glass, indium tin oxide, and fluorinedoped tin oxide show that all light near and below 330 nm is absorbed; thus, with the use of these substrates, light energy near and below 330 nm cannot reach the perovskite light-absorbing layer. It is expected that the overall solar cell can be improved if the wavelength can be adjusted to reach the perovskite solar cell absorbing layer through down-conversion of energy in the optical wavelength band. In this study, a polyvinylidene fluoride transparent film mixed with a ZnGa2O4:Mn phosphor was applied to the incident side of the perovskite solar cell with the intent to increase the light conversion efficiency without changing the internal bandgap energy and structure. By adding a phosphor layer to the external surface of PSC exposed to incident light, the efficiency of the cell was increased by the down-conversion of ultraviolet light (290 nm) to the visible region (509 nm) while maintaining the transmittance. To manufacture the perovskite solar cell, a TiO2-based mesoporous electron transport layer was spin-coated onto the substrate. The perovskite layer used in this experiment was CH3NH3PbI3 and was fabricated on a TiO2 layer. Spiro-OMeTAD solution was spin-coated as a hole-transport layer.

Optimization of Electrodeposition Time on the Properties of Cu2ZnSnS4 Thin Films for Thin Film Solar Cell Applications

2021 ◽  
Author(s):  
Muhammad Aamir Shafi ◽  
Amal Bouich ◽  
Laiq Khan ◽  
Hanif Ullah ◽  
Julia Mari Guaita ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cell ◽  
Thin Layer ◽  
Indium Tin Oxide ◽  
Time Variation ◽  
Thin Film Solar Cell ◽  
Deposition Time ◽  
Simulation Software ◽  
Czts Thin Films

Abstract Electrochemical deposition was used to create a quaternary CZTS (Cu2ZnSnS4) kesterite thin layer. An aqueous solution of CZTS was used to deposit a thin layer over Indium Tin Oxide. The effects of deposition time (variation) on CZTS thin films under ambient conditions were investigated in this study. Several available characterization systems were used to study the samples as they were produced. The polycrystalline description of the layer is inveterate by X-ray diffraction (XRD). The SEM as well as AFM study show that deposition time improved surface morphology and topography of CZTS thin films which increase several nm in grain size. Furthermore, depending upon the deposition duration, the optical study reveals an acceptable bandgap in a range of 1.44 to 1.71 eV. Characteristics of high-quality CZTS absorber layers for solar cell applications are discovered to be affected by deposition time variation. To check the effect of this bandgap variation (1.44 to 1.71 eV) on the performance of a CZTS based thin film solar cell, a simulation software SCAPS-1D is being used.

Hybrid Bilayer Heterojunction Al/ZnPc/ZnO /ITO Thin Films Solar Cell Prepared by Pulsed Laser Deposition

2020 ◽  
Vol 78 (2) ◽  
pp. 12-21
Author(s):  
Mohammed T. Hussein ◽  
Mohammed Jawad H. Kadhim
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Pulsed Laser Deposition ◽  
Indium Tin Oxide ◽  
Short Circuit ◽  
Pulsed Laser ◽  
Transport Layer ◽  
Laser Deposition ◽  
Electron Transport Layer ◽  
Xenon Lamp

Hybrid bilayer heterojunction Zinc Phthalocyanine (ZnPc) thin-film P-type is considered as a donor active layer as well as the Zinc Oxide (ZnO) thin film n-type is considered as an acceptor with (Electron Transport Layer). In this study, using the technique of Q-switching Nd-YAG Pulsed Laser Deposition (PLD) under vacuum condition 10-3 torr on two ITO (Indium Tin Oxide) and (AL) electrodes and aluminum, is used to construct the hydride bilayer photovoltaic solar cell heterojunction (PVSC). The electrical properties of hybrid heterojunction Al/ZnPc/ZnO/ITO thin film are studied. The results show that the voltage of open circuit (V_oc=0.567V), a short circuit (I_sc=36 ?A), and the fill factor (FF) of 0.443. In addition, the conversion efficiency of (n=3.4%) is recorded with Xenon lamp with an intensity 235mw/cm2 .

High throughput two-step ultrasonic spray deposited CH3NH3PbI3 thin film layer for solar cell application

2018 ◽  
Vol 390 ◽  
pp. 270-277 ◽  
Author(s):  
Ding-Hung Lan ◽  
Shao-Huan Hong ◽  
Li-Hui Chou ◽  
Xiao-Feng Wang ◽  
Cheng-Liang Liu
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
High Throughput ◽  
Solar Cell Application ◽  
Ultrasonic Spray ◽  
Thin Film Layer ◽  
Film Layer

scholarly journals Formation of anisotropic gold nanoparticles on indium tin oxide substrates as a plasmonic sensing material

2020 ◽  
Vol 10 ◽  
pp. 184798042096538
Author(s):  
Nur Liyana Razali ◽  
Marlia Morsin ◽  
Suratun Nafisah ◽  
Nur Zehan An’nisa Md Shah ◽  
Farhanahani Mahmud ◽  
...  
Keyword(s):  
Thin Film ◽  
Gold Nanoparticles ◽  
Process Parameters ◽  
Indium Tin Oxide ◽  
Growth Time ◽  
Hexadecyltrimethylammonium Bromide ◽  
Capping Agent ◽  
Film Sensor ◽  
Sensing Material ◽  
Shape And Size

A simple technique of seed-mediated growth has been successfully performed to grow anisotropy gold nanoparticles on solid substrates. The growth of the gold nanoparticles has been carried out in the presence of a binary surfactant mixture of hexadecyltrimethylammonium bromide with two different molecular weights of a capping agent, namely polyvinylpyrrolidone: 40,000 and 55,000. In this study, the effect of process parameters, growth time and molecular weight of capping agent was investigated. The growth time shows a significant impact on the shape and size of nanoparticles. The shorter growth time produced small spherical to square-like shape particles, whereas bigger particles including nanorods, nanosquares and nanotriangles were formed with longer growth time. The shape controlling agent, polyvinylpyrrolidone, was used to synthesis gold nanoparticles. It was found that monodisperse gold nanoparticles with uniform shape and size are hardly obtained when polyvinylpyrrolidone 40,000 was used as capping agent. Polyvinylpyrrolidone 55,000 produced more uniform shape and size of gold nanoparticles. Thus, these process parameters were found affected to the size, shape, surface density and uniformity of gold nanoparticles. This sample was further applied as a sensing material in the detection of toxic fungicide, namely chlorothalonil. The sensitivity of the sensor system was determined by the changes in peak positions and intensities of the transverse and longitudinal surface plasmon resonance peaks on different medium, that is, air, deionized water and chlorothalonil solution. The sensor response of gold nanoparticles thin film in 30 mM chlorothalonil showed two resonance peaks in comparison to the control experiment without gold nanoparticle thin film. The gold nanoparticles thin film sensor was successfully synthesized and potentially useful as a sensing material for fungicide detection.

Novel Wide-Band-Gap Ag(In1-xGax)Se2 Thin Film Solar Cells

2005 ◽  
Vol 865 ◽  
Author(s):  
Tokio Nakada ◽  
Keiichiro Yamada ◽  
Ryota Arai ◽  
Hiroki Ishizaki ◽  
Naoomi Yamada
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Thin Film Solar Cell ◽  
High Efficiency ◽  
Wide Band ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Wide Band Gap ◽  
Area Efficiency ◽  
Glass Substrates

AbstractAg(In1-xGax)Se2 thin films have been deposited on Mo-coated soda-lime glass substrates by the three-stage process using a molecular beam epitaxy (MBE) system. We found a remarkable decrease in the substrate temperature during the 2nd stage in which the film composition changes to a Ag excess. A single phase chalcopyrite AIGS thin film with a slightly Ag poor composition was obtained by using the temperature monitoring composition method. The cell performance of the AIGS thin film solar cell was found to strongly depend on the Ga/(In+Ga) and Ag/(In+Ga) atomic ratios.A high efficiency wide-gap (Eg=1.7eV) Ag(In0.2Ga0.8)Se2 thin film solar cell with a total-area efficiency of 9.3% (10.2% active area efficiency), Voc = 949mV, Jsc = 17.0 mA/cm2, FF = 0.577, and total area = 0.42 cm2 was achieved. The junction formation mechanism of AIGS devices is discussed based on electron beam induced current (EBIC) and scanning capacitance microscopy (SCM) analyses.

scholarly journals Optimization of Mo/Cr bilayer back contacts for thin-film solar cells

2018 ◽  
Vol 9 ◽  
pp. 2700-2707 ◽  
Author(s):  
Nima Khoshsirat ◽  
Fawad Ali ◽  
Vincent Tiing Tiong ◽  
Mojtaba Amjadipour ◽  
Hongxia Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Single Layer ◽  
Soda Lime ◽  
Thin Film Solar Cells ◽  
Soda Lime Glass ◽  
Tin Sulfide ◽  
Back Contact ◽  
Bilayer Films

Molybdenum (Mo) is the most commonly used material as back contact in thin-film solar cells. Adhesion of Mo film to soda–lime glass (SLG) substrate is crucial to the performance of solar cells. In this study, an optimized bilayer structure made of a thin layer of Mo on an ultra-thin chromium (Cr) adhesion layer is used as the back contact for a copper zinc tin sulfide (CZTS) thin-film solar cell on a SLG substrate. DC magnetron sputtering is used for deposition of Mo and Cr films. The conductivity of Mo/Cr bilayer films, their microstructure and surface morphology are studied at different deposition powers and working pressures. Good adhesion to the SLG substrate has been achieved by means of an ultra-thin Cr layer under the Mo layer. By optimizing the deposition conditions we achieved low surface roughness, high optical reflectance and low sheet resistivity while we could decrease the back contact thickness to 600 nm. That is two thirds to half of the thickness that is currently being used for bilayer and single layer back contact for thin-film solar cells. We demonstrate the excellent properties of Mo/Cr bilayer as back contact of a CZTS solar cell.

Growth of Large Grain Polycrystalline Silicon Thin Film on Soda-lime Glass at Low Temperature for Solar Cell Applications

2011 ◽  
Vol 1321 ◽  
Author(s):  
K. Wang ◽  
K. H. Wong
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Low Temperature ◽  
Thin Film Solar Cell ◽  
Seed Layer ◽  
Polycrystalline Silicon ◽  
Soda Lime ◽  
Absorber Layer ◽  
Soda Lime Glass ◽  
Si Thin Film

ABSTRACTHigh quality polycrystalline silicon (poly-Si) thin film solar cell was successfully fabricated on soda-lime glass substrates by electron beam (Ebeam) evaporation at low processing temperature. The initial poly-Si seed layer (p+-type 0.5 μm thick) was grown via the aluminum induced crystallization (AIC) method at 450 °C. Prominent interdiffusion and Si crystallization have been observed. X-ray diffraction (XRD) shows that (111) is the dominating crystalline orientation. Post annealing at 450 °C for six hours has produced densely packed Si grains with dimension of more than 10 μm in the plane of the film. Non-destructive Raman spectroscopy reveals the remarkable crystalline improvement for samples after thermal treatment. After removing the top diffused Al by chemical means, an absorber layer (p-type) of 0.9 μm thick was subsequently deposited onto the seed layer by Ebeam evaporation at 500 °C. Transmission electron microscopy (TEM) confirmed good homo-epitaxial growth. Without breaking the high vacuum, an n-type amorphous Si (a-Si) layer (0.7 μm thick) was coated onto the absorber layer to form p-n junction. The corresponding I-V characteristics suggest that our low temperature processing technique is applicable for production of poly-Si thin film solar cell on low cost substrates.

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