Semiconductor Junction Gas Sensors

Heavy metallic oxide nanoparticles for enhanced sensitivity in semiconducting polymer x-ray detectors

“…Primarily, applications for these polymers utilize the organic material as an active component in a variety of electronic devices, such as light emitting diodes [1], field effect transistors [2], photovoltaic cells [3], lasers [4], and sensors [5].…”

Dye-Sensitized Photocatalytic Water Splitting and Sacrificial Hydrogen Generation: Current Status and Future Prospects

“…Particular energy level alignment in a Schottky junction provides a potential barrier in preventing electron and holes from passing through them [21,89]. Schottky junction facilitates the transfer of electrons to the contacting metal, as shown in Figure 19 [19,21,90].…”

“…The energy band diagram of a metal-semiconductor Schottky junction is depicted in Figure 19 [90]. In this figure, Φ b represents the elevation of the potential barrier, which depends on the band bending of the semiconductor and the Fermi level of metal [89]. It has been recognized that the conduction band of the semiconductor should be higher than the Fermi level of the incorporated metal.…”

NO2 Sensing Properties of WO3 Thin Films Deposited by Rf-Magnetron Sputtering

“…Gas sensors based on metal oxide semiconductors are used in a wide variety of applications including gas monitoring and detection applications [4][5][6]. Considerable research has been carried out on the development of chemical sensors based on semiconductor metal oxides such as SnO 2 , ZnO, and TiO 2 because of their high sensitivity towards many reducing as well as oxidizing gases [7][8][9].…”