Aluminum-Doped Titanium Dioxide Thin Films: A Study of Different Concentrations on Poly(3-hexylthiophene): PhenylC61-Butyric Acid Metheyester-Based Organic Solar Cells

2020 ◽  
Vol 17 (11) ◽  
pp. 4849-4854
Author(s):  
Buraq T. Sh. Al-Mosawi ◽  
Mohammed K. Al-Hashimi ◽  
Ameer F. Abdulameer
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Sol Gel ◽  
Morphological Characteristics ◽  
Force Microscopy ◽  
Atomic Force ◽  
Doped Titanium Dioxide ◽  
Gel Preparation ◽  
Titanium Dioxide Thin Films

Sol–gel preparation method usually used to prepare the metal oxides. So, it is a rewarding process to prepare the electron selective film made of aluminum-doped titanium dioxide (Al-doped TiO2). The latter was used to fabricate the inverted organic solar cells P2HT:PCBM. The doping content with Al impact on the optical and morphological characteristics of each film were examined. These characteristics were analyzed depending on the magnified images of the prepared samples by atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD) in addition to the Uv-vis spectroscopic results. The outcomes revealed that the concentration of Al doping has potential influences on the optical properties, XRD results and surface morphology. The J–V curve characteristics of each solar cell utilizing Al–TiO2 film were analyzed and noticed that the most powerful conservation efficiency is 2.09% when using Al–TiO2 layer with 0.5 wt.% Al as a doping element.

scholarly journals Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives

2013 ◽  
Vol 4 ◽  
pp. 680-689 ◽  
Author(s):  
Gisela L Schulz ◽  
Marta Urdanpilleta ◽  
Roland Fitzner ◽  
Eduard Brier ◽  
Elena Mena-Osteritz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Heterojunction Solar Cells ◽  
Force Microscopy ◽  
Vacuum Technology ◽  
Atomic Force ◽  
Donor And Acceptor ◽  
Conversion Efficiencies

The optimization of solution-processed organic bulk-heterojunction solar cells with the acceptor-substituted quinquethiophene DCV5T-Bu 4 as donor in conjunction with PC61BM as acceptor is described. Power conversion efficiencies up to 3.0% and external quantum efficiencies up to 40% were obtained through the use of 1-chloronaphthalene as solvent additive in the fabrication of the photovoltaic devices. Furthermore, atomic force microscopy investigations of the photoactive layer gave insight into the distribution of donor and acceptor within the blend. The unique combination of solubility and thermal stability of DCV5T-Bu 4 also allows for fabrication of organic solar cells by vacuum deposition. Thus, we were able to perform a rare comparison of the device characteristics of the solution-processed DCV5T-Bu 4 :PC61BM solar cell with its vacuum-processed DCV5T-Bu 4 :C60 counterpart. Interestingly in this case, the efficiencies of the small-molecule organic solar cells prepared by using solution techniques are approaching those fabricated by using vacuum technology. This result is significant as vacuum-processed devices typically display much better performances in photovoltaic cells.

Photo-Catalysis of Red Wine Stains Using Titanium Dioxide Sol-Gel Coatings on Wool Fabrics

2008 ◽  
Vol 60 ◽  
pp. 111-116 ◽  
Author(s):  
C.J. Hurren ◽  
R.T. Liu ◽  
Xin Liu ◽  
X.G. Wang
Keyword(s):  
Titanium Dioxide ◽  
Red Wine ◽  
Sol Gel ◽  
Wool Fabric ◽  
Titanium Butoxide ◽  
Force Microscopy ◽  
Photo Catalysis ◽  
Atomic Force ◽  
Wool Fabrics ◽  
Coated Fabric

This paper investigated the use of titanium dioxide sol-gel coatings to photo-catalyse red wine stains on wool fabrics. Coatings were produced by the hydrolysis and condensation of titanium butoxide (Ti(OC4H9)4) on the surface of wool fabrics after pad application. Coatings were partially converted to the anatase form of titanium dioxide by prolonged immersion in boiling water. The coating presence was confirmed using scanning electron microscopy, UVspectrophotometry and atomic force microscopy. Coated samples were measured for photo-catalytic activity by degrading red wine stains from the surface of the coated fabric. The level of photocatalysis was determined for each of the coating systems after 168 hours. Red wine stains were photo-catalysed and level of staining was reduced from the UV exposed surface of the coated wool fabric.

Characterization and application of niobium-doped titanium dioxide thin films prepared by sol–gel process

2021 ◽  
Vol 127 (8) ◽  
Author(s):  
Gustavo Henrique M. Gomes ◽  
Magnum A. M. L. de Jesus ◽  
André S. Ferlauto ◽  
Marcelo M. Viana ◽  
Nelcy D. S. Mohallem
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Niobium Doped ◽  
Doped Titanium Dioxide ◽  
Titanium Dioxide Thin Films

Preparation of Pure Anatase TiO2 Thin Films by DC Sputtering Technique: Study on the Effect of Oxygen Partial Pressure

2012 ◽  
Vol 463-464 ◽  
pp. 1415-1419 ◽  
Author(s):  
P. Pungboon Pansila ◽  
Nirun Witit-Anun ◽  
Tongsai Jamnongkan ◽  
Surasing Chaiyakun
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Surface Morphology ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Force Microscopy ◽  
Atomic Force ◽  
Sputtering Power ◽  
Effect Of Oxygen ◽  
Titanium Dioxide Thin Films

Titanium dioxide thin films were deposited by DC reactive magnetron sputtering on silicon wafer and glass slide at sputtering power of 210 watt under total pressure of 5.0×10-3 mbar at different oxygen partial pressure. A pure metallic titanium target was sputtered in a mixture of argon and oxygen gases. The crystal structure and surface morphology were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM), respectively. The optical transmission was measured by spectrophotometer. The results show that the crystalline was pure anatase structure titanium dioxide thin films. The surface morphology of the films is strongly the oxygen partial pressure. It was found that surface roughness of the thin films was around 2.42 to 4.82 nm and the thickness was around 72 to130 nm. In addition, it was found that all the titanium dioxide thin films were deposited by reactive sputtering with the different oxygen pressure exhibit the transparency property.

Effect of Annealing Temperature on TiO2 Nanostructured Prepared by Sol-Gel Method

2013 ◽  
Vol 832 ◽  
pp. 763-766 ◽  
Author(s):  
S.K.M. Maarof ◽  
Mohamad Rusop ◽  
Saifollah Abdullah
Keyword(s):  
Raman Spectroscopy ◽  
Titanium Dioxide ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ethanol Acetic Acid ◽  
Triton X

Titanium Dioxide, TiO2 is one of the potential semiconductor materials. TiO2 has much application such as for pigments, oxygen sensors, and photocatalyst. Recently, the researcher study on the other application and revealed that this material has a great potential to be use in nanocoating area. The objective of this paper is to produce TiO2 nanostructured prepared by sol-gel method. Sol-gel was carried out using tetra (IV) isopropoxide (TTIP), absolute ethanol, Acetic Acid Glacial (GAA), Triton-X-100 and deionized water and all the solution was mixing by continuous stirring and heating. After finished prepare the sol-gel, solution will be spin coated onto glass substrate and annealed with different temperature for 2 hours. The particles were analyzed using Raman Spectroscopy to observe the crystallographic phase, and the morphology was evaluated through Atomic Force Microscopy (AFM). As a result, TiO2 that annealed at 450°C shows the better nanostructured compared to other annealing temperature. Keywords: Titanium Dioxide (TiO2); Sol-gel method ; Spin-coating ; Annealing process ; Raman spectroscopy

scholarly journals Influence of PEDOT:PSS Doping on the Performance of Organic Solar Cells

2021 ◽  
Vol 12 (5) ◽  
pp. 7092-7101
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Carrier Transport ◽  
Conduction Mechanism ◽  
Material Behavior ◽  
Device Performance ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hole Conduction ◽  
Metal Layers

Fabrication of Organic Solar Cells (OSC) using PEDOT:PSS, has been focussed on the formation of the four-layered configuration of : ITO / PEDOT:PSS / P3TH:PC60 BM / LiF with Al metal layers its electrode. The active layer comprised P3TH:PC60 BM, where P3HT formed the donor and PC60 BM the acceptor components. Interestingly, it has been observed that the OSCs fabricated from ethylene glycol doped PEDOT:PSS depicted Power Conversion Efficiency (PCE) of about 2 times more than that of OSCs made from pure PEDOT:PSS. After optimizing process parameters(~ 16% of DMF, ~10% of DMSO, and ~ 12% EG in PEDOT:PSS) and continued loading of doped components, the conductivity reflected a decreasing trend. Such a phenomenon was attributed to an increasing distance between the successive conductive grain/domain, which has been explained based on Atomic Force Microscopy (AFM). Moreover, stress has been made on the inter-junction behavior of carrier transport, particularly the hole conduction mechanism. Further, the perovskite-based solar cell has been compared and discussed to understand material behavior and device performance better.

scholarly journals Deposition and Characterization of Cobalt doped Titanium Dioxide Thin Films using Sol-gel Method

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
M. Luqman Harith Abu Mansor ◽  
◽  
Rosniza Hussin ◽  
Zakiah Kamdi ◽  
Ainun Rahmahwati Ainuddin ◽  
...  
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Doped Titanium Dioxide ◽  
Titanium Dioxide Thin Films

scholarly journals Исследование структуры объемного гетероперехода в полимерных солнечных элементах с помощью комбинации ультрамикротомирования и атомно-силовой микроскопии

2018 ◽  
Vol 52 (1) ◽  
pp. 110
Author(s):  
А.М. Алексеев ◽  
A. Ал-Афееф ◽  
Г.Д. Хедли ◽  
С.С. Харинцев ◽  
А.Е. Ефимов ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Polymer Solar Cells ◽  
Structural Investigations ◽  
Photoactive Layer ◽  
Force Microscopy ◽  
Atomic Force ◽  
Bulk Structure ◽  
Soft Samples

AbstractA method for visualization via atomic-force microscopy of the internal structure of photoactive layers of polymer solar cells using an ultramicrotome for photoactive layer cutting is proposed and applied. The method creates an opportunity to take advantage of atomic-force microscopy in structural investigations of the bulk of soft samples. Such advantages of atomic-force microscopy include a high contrast and the ability to measure various surface properties at nanometer resolution. Using the proposed method, samples of the photoactive layer of polymer solar cells based on a mixture of PTB7 polythiophene and PC_71BM fullerene derivatives are studied. The disclosed details of the bulk structure of this mixture allow us to draw additional conclusions about the effect of morphology on the efficiency of organic solar cells.

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