Highly selective PbS thin film based ammonia sensor for inert ambient: In-situ Hall and photoelectron studies
Source abstract
Abstract
Abstract Granular thin films of p-type semiconducting PbS (Cubic) with predominantly a-axis oriented grains having an average grain size of about 300 nm were deposited on polycrystalline alumina by pulsed laser deposition technique. Optical measurements show a band gap of 2.25 eV. The thin films were highly selective to ammonia at 473 K even in the presence of hydrogen and they operate in inert ambient with a typical response and recovery times of about 25 s and 120 s respectively. In-situ Hall measurements show an exponential decrease in hole carrier concentration with increasing NH3 level. XPS analysis of Pb 4f and S 2p levels reveals that the valence state of Pb and Sulphur remain in +2 and −2 respectively after exposure to the reducing ammonia and the appearance of N 1s peak at 398.1 eV confirms dissociative chemisorption of ammonia on PbS surface.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. Metal oxide composites in conductometric gas sensors: Achievements and challenges10.1016/j.snb.2016.12.117 ↗
2. Basic aspects and challenges of semiconductor gas sensors10.1557/S0883769400052465 ↗
3. Semiconducting oxides as gas-sensitive resistors10.1016/S0925-4005(99)00133-1 ↗
4. New perspectives of gas sensor technology10.1016/j.snb.2009.01.023 ↗
5. A self-doping surface effect and its influence on the sensor performance of undoped SnO2 based gas sensors10.1016/j.proeng.2015.08.571 ↗
6. A highly sensitive and fast-responding SnO2 sensor fabricated by combustion chemical vapor deposition10.1021/cm050451o ↗
7. Enhanced HCHO gas sensing properties by Ag-loaded sunflower-like In2O3 hierarchical nanostructures10.1039/C3TA15110G ↗
8. High-performance gas sensor based on ZnO nanowires functionalized by Au nanoparticles10.1016/j.snb.2014.04.010 ↗
9. Transport and gas sensing properties of In2O3 nanocrystalline thick films: A Hall effect based approach10.1016/j.snb.2009.03.002 ↗
10. Conduction model of SnO2 thin films based on conductance and Hall effect measurements10.1063/1.2229802 ↗
11. Changes in carrier concentration and debye length: Experimental evidence from van der Pauw Hall measurements on NOx sensing of In2O310.1149/2.0451409jes ↗
12. Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview10.1016/j.snb.2013.11.005 ↗
13. A strategy for ultrasensitive and selective detection of methylamine using p-type Cr2O3: Morphological design of sensing materials, control of charge carrier concentrations, and configurational tuning of Au catalysts10.1016/j.snb.2016.09.098 ↗
14. New insights towards electron transport mechanism of highly efficient p-Type CuO (111) nanocuboids-based H2S gas sensor10.1021/acs.jpcc.5b11327 ↗
15. Characteristics of a Pt/NiO thin film-based ammonia gas sensor10.1016/j.snb.2017.10.032 ↗
16. Studies on PbS and PbSe detectors for IR system10.1023/A:1006676029014 ↗
17. Hybrid solar cells using PbS nanoparticles10.1016/j.solmat.2006.10.016 ↗
18. The luminescence of PbS nanoparticles embedded in sol–gel silica glass10.1016/S0009-2614(01)00926-5 ↗
19. Microstructural and nonlinear optical properties of silica–titania sol-gel film doped with PbS quantum dots10.1063/1.370702 ↗
20. Research on gas-sensing properties of lead sulfide-based sensor for detection of NO2 and NH3 at room temperature10.1016/j.snb.2009.03.075 ↗
21. Preparation of nanostructured PbS thin films as sensing element for NO2 gas10.1016/j.apsusc.2014.03.190 ↗
22. Facile method of preparation of PbS films for NO2 detection10.1039/C4RA15644G ↗
23. Highly sensitive and selective ammonia gas sensors based on PbS quantum dots/TiO2 nanotube arrays at room temperature10.1016/j.snb.2016.06.037 ↗
24. Hydrolysis of uranium mononitride10.1039/tf9676301286 ↗
25. Ammonia inhibition in anaerobic digestion: a review10.1016/j.procbio.2013.04.012 ↗
26. Synthesis of PbS nanostructures by chemical bath deposition method10.1016/S1452-3981(23)07888-4 ↗
27. A method of measuring specific resistivity and Hall effect of discs of arbitrary shape
28. Highly crystalline p-PbS thin films with tunable optical and hole transport parameters by chemical bath deposition10.1016/j.actamat.2017.03.062 ↗
29. Comparative analysis of Raman spectra of PbS macro-and nanocrystals10.1134/S0030400X10080199 ↗
30. First-and second-order Raman spectra of galena (PbS)10.1063/1.1505670 ↗
31. Preparation and optical studies of PbS nanoparticles10.1016/j.optmat.2015.05.017 ↗
32. Tuning the physical properties of PbS thin films towards optoelectronic applications through Ni doping10.1016/j.ijleo.2016.06.106 ↗
33. Solution grown PbS nanoparticle films10.1016/S0169-4332(03)00955-3 ↗
34. Quantum-size effects of PbS nanocrystallites in evaporated composite films10.1016/S0965-9773(98)00056-7 ↗
35. Effect of thickness on the structural and electrical properties of spray pyrolysed lead sulfide thin films
36. p-type nanostructure PbS thin films prepared by the silar method
37. Electrical and magnetic properties of sulfides10.2138/rmg.2006.61.3 ↗
38. The structural properties of Al doped ZnO films depending on the thickness and their effect on the electrical properties10.1016/j.apsusc.2011.07.022 ↗
39. The electrical properties of polycrystalline silicon films10.1063/1.321593 ↗
40. Stability and sensing mechanism of high sensitivity chlorine gas sensors using transparent conducting oxide thin films10.1016/S0040-6090(99)00440-X ↗
41. Modeling of sensing and transduction for p-type semiconducting metal oxide based gas sensors10.1007/s10832-009-9583-x ↗
42. Dielectric function of colloidal lead chalcogenide quantum dots obtained by a Kramers-Krönig analysis of the absorbance spectrum10.1103/PhysRevB.81.235319 ↗
43. Surface properties of nanocrystalline PbS films deposited at the water–oil interface: a study of atmospheric aging10.1021/la504779h ↗
44. XPS study of clean metal sulfide surfaces10.1016/0169-4332(94)90080-9 ↗
45. Effect of double substitutions of Cd and Cu on optical band gap and electrical properties of non-colloidal PbS thin films10.1016/j.jallcom.2016.05.203 ↗
46. Flotation related ESCA studies on PbS surfaces10.1016/0378-5963(77)90011-3 ↗
47. Bond ionicity and structural stability of some average-valence-five materials studied by x-ray photoemission10.1103/PhysRevB.15.1680 ↗
48. Engineering of electronic and optical properties of PbS thin films via Cu doping10.1016/j.spmi.2016.07.025 ↗
49. Electron spectroscopy for chemical analysis studies of lead sulfide oxidation10.1021/j100507a008 ↗
50. Adsorption of sulfide ions on cerussite surfaces and implications for flotation10.1016/j.apsusc.2015.11.035 ↗
51. Activation mechanism of lead ions in cassiterite flotation with salicylhydroxamic acid as collector10.1016/j.seppur.2017.01.053 ↗
52. Combined DFT and XPS investigation of enhanced adsorption of sulfide species onto cerussite by surface modification with chloride10.1016/j.apsusc.2017.07.017 ↗
53. Surface modification of malachite with ethanediamine and its effect on sulfidization flotation10.1016/j.apsusc.2017.12.113 ↗
54. The origin of the stereochemically active Pb (II) lone pair: DFT calculations on PbO and PbS10.1016/j.jssc.2005.01.030 ↗
55. Angle-resolved uv photoemission and electronic band structures of the lead chalcogenides10.1103/PhysRevB.18.3847 ↗
56. Thermally grown Si3N4 thin films on Si (100): Surface and interfacial composition10.1103/PhysRevB.47.15622 ↗