NO sensors based on semiconducting metal oxide nanostructures: Progress and perspectives

Localizing trapped charge carriers in NO2 sensors based on organic field-effect transistors

“…When the resistor is exposed to NO 2 , the NO 2 adsorbs on the surface of the metal oxide and redox reactions take place. 1 The extraction of electrons from the metal oxide results in an increase in the width of the depletion layer and of the corresponding potential barriers at the grain boundaries. Then the resistance increases, or the current decreases.…”

“…The huge impact of NO 2 emission on public health and the environment has led to extensive scientific and technological progress in the field of NO 2 sensors. 1,2 Many sensors are commercially available, such as electrochemical, resistive, and optical sensors.…”

Electrochemical deposition of gold on indium zirconate (InZrOx with In/Zr atomic ratio 1.0) for high temperature automobile exhaust gas sensors

“…Among these applications, detection of automobile exhaust gases specifically requires robust solid-state sensing devices that are stable and capable of withstanding harsh conditions such as temperature in the range of 500-600 °C [2][3][4][5]. Metal oxide based chemoresistive devices are particularly attractive for this purpose due to their simple structure, ease of fabrication, excellent miniaturization capability, ruggedness, and low cost [5,6]. To date, a large number of metal oxides have been explored for their sensitivity towards various exhaust gases and they have been reviewed extensively in recent years [6][7][8][9][10][11][12].…”

“…Metal oxide based chemoresistive devices are particularly attractive for this purpose due to their simple structure, ease of fabrication, excellent miniaturization capability, ruggedness, and low cost [5,6]. To date, a large number of metal oxides have been explored for their sensitivity towards various exhaust gases and they have been reviewed extensively in recent years [6][7][8][9][10][11][12].…”

2-Aminoethanol-mediated wet chemical synthesis of ZnO nanostructures

“…In the past few years, ZnO-based nanostructured materials have emerged as the first-choice materials not only for semiconductor devices such as sensors (Chougule et al 2012;Afzal et al 2012) and solar cells (Kim et al 2013;Patra et al 2014), but also in other fields as UV emitters (Zhang et al 2013), optical waveguides (Jiang et al 2012), and biomedical (Yang et al 2012) and optoelectronic devices (Zhang et al 2012). The nontoxic nature, low cost, stability, easy processability, and nanostructuring are the chief distinctions of ZnO (Schmidt-Mende and MacManusDriscoll 2007).…”