MgAl/PbPc/Cu Organic Thin-Film Diode Preparation and Gas-Sensing Characteristics Analysis

Thin-film diode structure is MgAl/PbPc/Cu if lead phthalocyanine is taken as organic semiconductor gas-sensing material with methods such as vacuum thermal evaporation or magnetron sputtering. Use Keithley 4200 semiconductor instrument and Gas-sensing measurement system to analyze gas-sensing characteristic of Schottky diode device, the sensitive degree of NO2 with different density can be compared through theoretical analysis of measured current and voltage data. The measurement result shows: when the device is placed in 10ppm NO2 environment, after 74 minutes, forward current is decreased by 65 times, the corresponding MgAl/PbPc Schottky barrier height rises about 20meV. Reversed current of the device is 4 times larger because the increase of minority carrier electron number in PbPc thin-film is being absorbed by NO2.

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Respected Author, Your research paper has been published successfully. Please find the link below. http://ymerdigital.com/current-issue/ Please find the below DOI allocated to your article. 10.37896/YMER20.12/45 OR https://www.doi.org/10.37896/YMER20.12/45 Please find the below attached E- certificates Thanks.

YMER Digital ◽

10.37896/ymer20.12/47 ◽

2021 ◽

Vol 20 (12) ◽

pp. 504-509

Author(s):

C. K Nanhey ◽

◽

M. K Bhanarkar ◽

B. M. Sargar ◽

◽

...

Keyword(s):

Thin Film ◽

Metal Oxide ◽

Current Issue ◽

Gas Sensing ◽

Electrical Characterization ◽

Metal Oxide Semiconductor ◽

Oxide Semiconductor ◽

Sensing Material ◽

Film Development ◽

Sensing Characteristics

Since many years, metal oxide semiconductor has paid too much interest as a gas sensing material by researchers because of wide performance. TiO2 is one of the majority crucial metal oxide which produced better performance in thin film development. Advanced spray pyrolysis system was used to develop thin film. The gas sensing characteristics TiO2 films are evaluated with responses. The gas sensing response, electrical characterization and sensitivity are corporate.

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Acetylene Sensing Characteristics of SnO2 Nanowires

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1119.132 ◽

2015 ◽

Vol 1119 ◽

pp. 132-136

Author(s):

Bing Wang

Keyword(s):

Electron Microscopy ◽

Thermal Evaporation ◽

Gas Adsorption ◽

Gas Sensing ◽

X Ray Diffraction ◽

X Ray ◽

Sensing Material ◽

Transmission Electron ◽

Mems Technology ◽

Sensing Characteristics

SnO2 nanowires have been fabricated using thermal evaporation of the mixed powders of SnO2 and active carbon with Au catalysts. The morphology and structure of the prepared nanowires are determined on the basis of field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectrometer (EDS), x-ray diffraction (XRD) and transmission electron microscopy (TEM). The comb-shape interdigitating electrode made by MEMS technology is used to auxiliary investigating the gas sensing performance of the synthesized SnO2 nanowires. The SnO2 nanowires have sensing response to acetylene concentration of 1000 ppm under operated temperature of 300°C. The gas sensing mechanism is attributed to the gas adsorption and desorption processes occurring on the surface of the gas sensing material.

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