Properties of Iodine Doped Amorphous Carbon Thin Films Grown by Thermal CVD

2013 ◽  
Vol 667 ◽  
pp. 294-299 ◽  
Author(s):  
K. Dayana ◽  
A.N. Fadzilah ◽  
A. Ishak ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Amorphous Carbon ◽  
Iodine Doping ◽  
Electrical And Optical Properties ◽  
As Doping ◽  
Thermal Cvd ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Amorphous Carbon Thin Film

Thin film of undoped and doped amorphous carbon has been achieved using the simple thermal CVD system in an ambient gas of Ar and Ar with I2, respectively. The electrical and optical properties of the iodine doped amorphous carbon (a-C:I) thin films were studied. The incorporation of iodine into the amorphous carbon thin film results in increase of electrical conductivity as doping temperature increase up to 400°C, which indicates that doping effect of iodine. Heterojuction is confirmed by rectifying current-voltage characteristics of a-C:I/n-Si junction. The decreasing of optical band gap from 0.54 to 0.25 eV after iodine doping was determined which contribute to induce graphitization in the films. Raman result indicates that sp2 and sp3 bonded carbon atoms were dominated in the both with and without iodine doped thin films.

Photoconductivity of Nanocomposite MEH-PPV: TiO2 Thin Films

2011 ◽  
Vol 13 ◽  
pp. 87-92 ◽  
Author(s):  
M.S.P Sarah ◽  
F.S. Zahid ◽  
M.Z. Musa ◽  
U.M. Noor ◽  
Z. Shaameri ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Morphology ◽  
Spin Coating ◽  
Glass Substrate ◽  
Spin Coating Technique ◽  
Coating Technique ◽  
Current Voltage ◽  
Current Voltage Characteristics

The photoconductivity of a nanocomposite MEH-PPV:TiO2 thin film is investigated. The nanocomposite MEH-PPV:TiO2 thin film was deposited on a glass substrate by spin coating technique. The composition of the TiO2 powder was varied from 5 wt% to 20 wt% (with 5 wt% interval). The concentration of the MEH-PPV is given by 1 mg/1 ml. The current voltage characteristics were measured in dark and under illumination. The photoconductivity showed increment in value as the composition of the TiO2 is raised in the polymer based solution. The absorption showed augmentation as the amount of TiO2 is increased. The escalation of the current voltage is then supported by the results of surface morphology.

scholarly journals THE USE OF LIQUID PROBES BASED ON AN EUTECTIC SOLUTION FOR STUDYING THE CONDUCTING PROPERTIES OF THIN FILMS

2021 ◽  
pp. 338-344
Author(s):  
Никита Вадимович Пермяков
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Contact Area ◽  
Vertical Axis ◽  
Mechanical Deformation ◽  
Optical Control ◽  
Contact Areas ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Indium Gallium

Работа посвящена разработке модульной четрырехзондовой установки с использованием жидкого контакта на основе индий-галлиевого эвтектического раствора (EGaIn), с помощью которого можно создать прижимные жидкие контакты, не вносящие механические деформации в измеряемые структуры. Предлагается использовать данную установку для измерения вольт-амперных характеристик тонкопленочных образцов. Предполагается модульная схема измерений. Каждый зонд управляется четырьмя моторами для позиционирования и выдавливания капли из шприца для формирования нужного размера пятна контакта. Используется оптический контроль для подготовки зондов и измерения диаметра сформированных контактных областей. Подобраны параметры изготовления жидких зондов, а именно скорости выдавливания и перемещения зонда вдоль вертикальной оси для формирования капли конической формы . Управление установкой осуществляется в среде LabView. The work is devoted to development of a modular four-probe setup using a liquid contact based on an indium-gallium eutectic solution (EGaIn), which can be used to create clamping liquid contacts that do not introduce mechanical deformation into the measured structures. It is proposed to use this setup for measuring the current-voltage characteristics of thin-film samples. A modular measurement scheme is assumed. Each probe is driven by four motors to position and expel a drop from the syringe to form the desired contact area size. Optical control is used to prepare the probes and measure the diameter of the formed contact areas. The parameters for the manufacture of liquid probes are selected, namely, the speed of extrusion and movement of the probe along the vertical axis to form a conical droplet. The installation is controlled in the LabView environment.

Influence of Iodine Doping on the Properties of Amorphous Carbon Thin Films Deposited from Camphoric Carbon Precursor

2013 ◽  
Vol 832 ◽  
pp. 449-454
Author(s):  
K. Dayana ◽  
A.N. Fadzilah ◽  
A. Ishak ◽  
Yosri M. Siran ◽  
Syahril Anuar M. Rejab ◽  
...  
Keyword(s):  
Thin Films ◽  
Amorphous Carbon ◽  
Vapour Deposition ◽  
Measurement Techniques ◽  
Chemical Vapour ◽  
Nir Spectroscopy ◽  
Iodine Doping ◽  
Current Voltage ◽  
Carbon Thin Films ◽  
Photovoltaic Solar Cells

odine incorporation to amorphous carbon (a-C) thin films offers many advantages and a full understanding of the properties of iodine doped amorphous carbon (a-C:I) thin films which is necessary for applications like optoelectronics devices and photovoltaic solar cells. Iodine doped amorphous carbon thin films have been doped by thermal chemical vapour deposition (CVD) technique at different amount of iodine. The effects of iodine amount on the properties of a-C:I thin films have been investigated using standard measurement techniques and discussed. FESEM studies have been performed on the doped films for the surface morphology studies. Raman studies have been carried out on the doped samples for the chemical bonding of carbon atoms. The sp2 and sp3 contents have found to be dependent on the amount of iodine. For evaluation of the electrical and optical properties of the doped films, the current-voltage (I-V) measurement and UV-Vis-NIR spectroscopy have been performed on the a-C:I thin films. It has been observed that the a-C:I thin films doped with 1g has higher electrical conductivity and lowest optical band gap.

Iodine Doping of Amorphous Carbon Thin Films Deposited by Thermal CVD

2012 ◽  
Vol 626 ◽  
pp. 834-838 ◽  
Author(s):  
K. Dayana ◽  
A.N. Fadzilah ◽  
Mohamad Rusop
Keyword(s):  
Thin Films ◽  
Amorphous Carbon ◽  
Chemical Vapor ◽  
Nir Spectroscopy ◽  
Chemical Vapor Deposition Method ◽  
Iodine Doping ◽  
Glass Substrates ◽  
Current Voltage ◽  
Carbon Thin Films ◽  
Natural Precursor

A simple thermal chemical vapor deposition method is employed for the deposition of amorphous carbon thin films by natural precursor camphor oil onto the glass substrates and the iodine doping process. In this work, we have studied the effect of iodine doping on the evolution of electrical properties and the optical and structural properties of amorphous carbon thin films. The amorphous carbon thin films were characterized by using Raman spectroscopy, UV-VIS-NIR spectroscopy, current-voltage (I-V) measurement, Fourier transform infrared (FTIR) and FESEM. The I-V study reveals that the electrical conductivity was increased with the iodine doping. The iodine doped thin films induced graphitization by decreasing the optical band gap. Raman and FTIR result indicates that amorphous carbon thin films consist of a mixture of sp2 and sp3 bonded carbon atoms. The FESEM shows the amorphous nature of the thin films.

scholarly journals Deposition and characterization of amorphous carbon thin film by thermal CVD

2020 ◽  
Vol 1529 ◽  
pp. 022049
Author(s):  
Dayana Kamaruzaman ◽  
Muhammad Aliff Rosly ◽  
Ishak Annuar ◽  
Nurfadzilah Ahmad ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Thin Film ◽  
Amorphous Carbon ◽  
Thermal Cvd ◽  
Carbon Thin Film ◽  
Amorphous Carbon Thin Film

scholarly journals N-образные вольт-амперные характеристики гибридных органических материалов на основе цинковых комплексов

2021 ◽  
Vol 47 (8) ◽  
pp. 3
Author(s):  
А.Н. Гусев ◽  
А.С. Мазинов ◽  
В.С. Гурченко ◽  
А.С. Тютюник ◽  
Е.В. Брага
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Infrared Spectroscopy ◽  
Electrical Properties ◽  
Band Gap ◽  
Optical Band Gap ◽  
Organic Materials ◽  
Zinc Complexes ◽  
Current Voltage ◽  
Current Voltage Characteristics

The current-voltage characteristics of hybrid organic materials C48H42N6O2Zn and C54H54N6O2Zn are researched. The method of obtaining, microscopy, as well as the results of infrared spectroscopy and studies of the electrical properties of the obtained thin films of these organic materials based on zinc complexes. The results of calculating the optical band gap are presented. It was found that the resulting thin-film structures have N-shaped current-voltage characteristics.

scholarly journals Вольт-амперные характеристики и фотоэлектрический эффект гетероструктур фуллерен С-=SUB=-60-=/SUB=--4-метилфенилгидразон N-изоамилизатина

2019 ◽  
Vol 45 (19) ◽  
pp. 40
Author(s):  
А.Н. Гусев ◽  
А.С. Мазинов ◽  
А.И. Шевченко ◽  
А.С. Тютюник ◽  
В.С. Гурченко ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Organic Matter ◽  
Ir Spectroscopy ◽  
Fullerene C60 ◽  
Electrophysical Properties ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
C60 Films

The results of using N-isoamylisatin 4-methylphenylhydrazone to optimize fullerene-based heterostructures have been presented. The technique of obtaining, microscopy, as well as the results of IR spectroscopy and the study of the electrophysical properties of thin films of this hydrazone together with fullerene C60 have been described. The addition of the considered organic matter to fullerene films made it possible to increase the photoconductivity by 2 orders of magnitude compared to C60 films. The obtained thin-film structures have rectifying light-current-voltage characteristics.

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