A Study on Suitability of II-VI Semiconductor / Solid Polymer Thin Film Junctions for Photovoltaic Application

There is a great deal of interest in the morphology of polymers. Polymer systems such as physical blends, copolymers and latexes of the core-shell type have become increasingly important in “designing properties”. of the final polymer. Phase separation examination is an excellent method of studying the morphology in these polymer systems.Normally phase separation in polymers has been studied by TEM. The standard sample preparation is to embed the solid polymer in epoxy and then microtome. Microtoming can create artifacts such as distortion due to the knife, cutting difficulty with a rubber phase and possible polymer-epoxy interaction. Because of the above mentioned problems a thin film technique has been developed to circumvent the microtoming procedure. A ruthenium tetrox-ide (RUO4) stain was also used to increase contrast.

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Effect of Illumination on Organic Polymer Thin-Film Transistors

MRS Proceedings ◽

10.1557/proc-771-l10.17 ◽

2003 ◽

Vol 771 ◽

Cited By ~ 3

Author(s):

Michael C. Hamilton ◽

Sandrine Martin ◽

Jerzy Kanicki

Keyword(s):

Thin Film ◽

Thin Film Transistors ◽

Drain Current ◽

Charge Carriers ◽

Electrical Performance ◽

Organic Polymer ◽

Light Illumination ◽

Polymer Thin Film ◽

Channel Region ◽

White Light Illumination

AbstractWe have investigated the effects of white-light illumination on the electrical performance of organic polymer thin-film transistors (OP-TFTs). The OFF-state drain current is significantly increased, while the drain current in the strong accumulation regime is relatively unaffected. At the same time, the threshold voltage is decreased and the subthreshold slope is increased, while the field-effect mobility of the charge carriers is not affected. The observed effects are explained in terms of the photogeneration of free charge carriers in the channel region due to the absorbed photons.

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Conducting polymer thin film for optoelectronic devices applications

Polymers for Advanced Technologies ◽

10.1002/pat.5290 ◽

2021 ◽

Author(s):

Mohamed H. Abdel‐Aziz ◽

Mohammed Zwawi ◽

Ahmed F. Al‐Hossainy ◽

Mohamed Sh. Zoromba

Keyword(s):

Thin Film ◽

Conducting Polymer ◽

Optoelectronic Devices ◽

Polymer Thin Film

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A Theoretical Study on an Elastic Polymer Thin Film-Based Capacitive Wind-Pressure Sensor

Polymers ◽

10.3390/polym12092133 ◽

2020 ◽

Vol 12 (9) ◽

pp. 2133

Author(s):

Xue Li ◽

Jun-Yi Sun ◽

Bin-Bin Shi ◽

Zhi-Hang Zhao ◽

Xiao-Ting He

Keyword(s):

Thin Film ◽

Closed Form ◽

Pressure Sensor ◽

Closed Form Solution ◽

Form Solution ◽

Wind Pressure ◽

Polymer Thin Film ◽

Movable Electrode ◽

Elastic Polymer ◽

Electrode Plate

This study is devoted to the design of an elastic polymer thin film-based capacitive wind-pressure sensor to meet the anticipated use for real-time monitoring of structural wind pressure in civil engineering. This sensor is composed of four basic units: lateral elastic deflection unit of a wind-driven circular polymer thin film, parallel plate capacitor with a movable circular electrode plate, spring-driven return unit of the movable electrode plate, and dielectric materials between electrode plates. The capacitance of the capacitor varies with the parallel move of the movable electrode plate which is first driven by the lateral elastic deflection of the wind-driven film and then is, after the wind pressure is reduced or eliminated, returned quickly by the drive springs. The closed-form solution for the contact problem between the wind-driven thin film and the spring-driven movable electrode plate is presented, and its reliability is proved by the experiment conducted. The numerical examples conducted show that it is workable that by using the numerical calibration based on the presented closed-form solution the proposed sensor is designed into a nonlinear sensor with larger pressure-monitoring range and faster response speed than the linear sensor usually based on experimental calibration.

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