We performed in silico calculations of electrical conductivity of quasi-2D SnO thin films with a (110) surface-prospect material for sensitive element of gas sensors. Electronic structure, charge transfer and chemoresistive response of quasi-2D SnO thin films during adsorption of alcohol molecules (ethanol, methanol, isopropanol and butanol) and ketones (acetone, cyclopentanone and cyclohexanone) were calculated. It was found that the electrical conductivity of quasi-2D SnO thin films decreases within 4-15% during adsorption of analytes. The influence of temperature on the concentration of analytes on the surface of quasi-2D SnO thin films was explored in dependence analyte's type.
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http://dx.doi.org/10.3390/ma16010438 | DOI Listing |
Langmuir
August 2024
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
Lead-tin (Pb-Sn) mixed-halide perovskites show potential for single-junction and tandem solar cells due to their adjustable band gaps, flexible composition, and superior environmental stability compared to three-dimensional (3D) perovskites. However, they have lower power conversion efficiencies. Understanding band alignment and charge carrier dynamics is essential for enhancing photovoltaic performance.
View Article and Find Full Text PDFACS Sens
May 2024
Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore.
Fast and reliable semiconductor hydrogen sensors are crucially important for the large-scale utilization of hydrogen energy. One major challenge that hinders their practical application is the elevated temperature required, arising from undesirable surface passivation and grain-boundary-dominated electron transportation in the conventional nanocrystalline sensing layers. To address this long-standing issue, in the present work, we report a class of highly reactive and boundary-less ultrathin SnO films, which are fabricated by the topochemical transformation of 2D SnO transferred from liquid Sn-Bi droplets.
View Article and Find Full Text PDFMaterials (Basel)
January 2023
Institute of Physics, Saratov State University, Astrakhanskaya Street 83, 410012 Saratov, Russia.
We performed in silico calculations of electrical conductivity of quasi-2D SnO thin films with a (110) surface-prospect material for sensitive element of gas sensors. Electronic structure, charge transfer and chemoresistive response of quasi-2D SnO thin films during adsorption of alcohol molecules (ethanol, methanol, isopropanol and butanol) and ketones (acetone, cyclopentanone and cyclohexanone) were calculated. It was found that the electrical conductivity of quasi-2D SnO thin films decreases within 4-15% during adsorption of analytes.
View Article and Find Full Text PDFHole transport layer NiO-based inverted perovskite solar cells (PSCs) have advantages of simple fabrication, low temperature, and low cost. Furthermore, the p-type NiO material compared to that of typical n-type SnO for PSCs has better photostability potential due to its lower photocatalytic ability. However, the NiO layer modified by some typical materials show relatively simple functions, which limit the synthesized performance of NiO-based inverted PSCs.
View Article and Find Full Text PDFSci Rep
August 2013
State key laboratory of Superhard materials, Jilin University, Changchun 130012, PR China.
Heterostructure material that acts as resonant tunneling system is a major scientific challenge in applied physics. Herein, we report a resonant tunneling system, quasi-2D Cu(2)O/SnO(2) p-n heterostructure multi-layer film, prepared by electrochemical deposition in a quasi-2D ultra-thin liquid layer. By applying a special half-sine deposition potential across the electrodes, Cu(2)O and SnO(2) selectively and periodically deposited according to their reduction potentials.
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