Enhanced light detection by annealed vertically aligned CeO2 nanorods
Source abstract
Abstract
Abstract In this work, we investigate the growth of uniform cerium oxide (CeO2) nanorods (NRs) in vertically aligned form by using glancing angle deposition (GLAD) technique on silicon substrates. The samples were annealed at different temperatures and 800 °C proved to be the best annealing temperature. FESEM revealed the growth of CeO2 NRs in vertically well-aligned form. XRD data showed better crystallinity and sharpened peaks in the case of annealed samples. Room temperature photoluminescence (PL) spectra obtained for the samples can be related to the abundant defects in the NRs. The annealed CeO2 NR device showed increased photocurrent which can be attributed to the oxygen adsorption and desorption process that occurred at the NR surface. Under UV illumination, the device annealed at 800 °C displayed maximum responsivity of 7.8 A/W, detectivity of 3.26 × 1012 Jones and noise equivalent power of 1.29 × 10−14 W at 4 V bias. Thus, the annealed device exhibited good photodetection capabilities.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Ga2O3 and related materials · Quantum Dots Synthesis And Properties
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References (52)
Show source-provided references
1. One-dimensional nanostructures: fabrication, characterisation and applications10.1179/174328008X348183 ↗
2. Wang · 2008 · Vol. 3
3. Engineering of nanoscale defect patterns in CeO2 nanorods via ex-situ and in situ annealing10.1039/C4NR07308H ↗
4. Defect-site promoted surface reorganization in nanocrystalline ceria for the low-temperature activation of ethylbenzene10.1021/ja066834k ↗
5. Resistive oxygen sensor using ceria-zirconia sensor material and ceria-yttria temperature compensating material for lean-burn engine10.3390/s91108884 ↗
6. Oxygen vacancies and catalysis on ceria surfaces10.1126/science.1113955 ↗
7. Cytotoxicity and genotoxicity of ceria nanoparticles on different cell lines in vitro10.3390/ijms14023065 ↗
8. Evaluation of oxide-chemical mechanical polishing characteristics using ceria-mixed abrasive slurry10.1007/s13391-012-2056-4 ↗
9. Role of P-containing species in phosphated CeO2 in the deterioration of its oxygen storage and release properties
10. Atomic and electronic structure of unreduced and reduced CeO2 surfaces: a first-principles study10.1063/1.1688316 ↗
11. Oxygen vacancy clusters on ceria: decisive role of cerium f electrons10.1103/PhysRevB.79.075433 ↗
12. Oxidation state and lattice expansion of CeO2-x nanoparticles as a function of particle size
13. Growth mechanism, microstructure, and surface modification of nanostructured CeO2 films by chemical solution deposition10.1002/adfm.200500206 ↗
14. Study of flowerlike CeO2 microspheres used as catalyst supports for CO oxidation reaction10.1016/j.jpcs.2007.05.005 ↗
15. Hydrothermal preparation of fractal dendrites: cerium carbonate hydroxide and cerium oxide10.1016/j.materresbull.2008.11.020 ↗
16. Reverse micelles directed synthesis of mesoporous ceria nanostructures10.1016/j.mseb.2007.01.051 ↗
17. Synthesis and photoluminescence of Dy-doped ZnO nanorods10.1016/j.physe.2005.08.015 ↗
18. Controlled synthesis of CeO2 nanorods by a solvothermal method10.1088/0957-4484/16/9/006 ↗
19. Designing nanostructures by glancing angle deposition10.1117/12.505253 ↗
20. Perspectives on oblique angle deposition of thin films: from fundamentals to devices10.1016/j.pmatsci.2015.06.003 ↗
21. Fabrication and characterization of high performance MSM UV photodetector based on NiO film10.1016/j.sna.2017.05.028 ↗
22. Atomic structure of a CeO2 grain boundary: the role of oxygen vacancies10.1021/nl1029336 ↗
23. Origin of lattice strain in nanocrystalline materials10.1080/09500830500474339 ↗
24. X-ray analysis of ZnO nanoparticles by Williamson-Hall and size-strain plot methods
25. Size-induced lattice relaxation in CeO2 nanoparticles
26. Thermal treatment of cerium oxide and its properties: adsorption ability versus degradation efficiency10.1155/2014/706041 ↗
27. Suryanarayana · 1998
28. Influence of annealing atmosphere on the performance of a β-Ga2O3 thin film and photodetector10.1364/OME.8.002229 ↗
29. Effects of annealing environments on the solution-grown, aligned aluminium-doped zinc oxide nanorod-array-based ultraviolet photoconductive sensor
30. Transmittance enhancement and optical band gap widening of Cu2O thin films after air annealing
31. Synthesis, characterization, and application of 1-D cerium oxide nanomaterials: a review10.3390/ijms11093226 ↗
32. The electronic structure of CeO2 and PrO210.1016/0038-1098(83)90550-1 ↗
33. Covalent insulator CeO2: Optical reflectivity measurements10.1103/PhysRevB.36.1238 ↗
34. Hierarchically mesostructured doped CeO2 with potential for solar-cell use10.1038/nmat1129 ↗
35. Characterization of cerium (IV) oxide ultrafine particles prepared using reversed micelles
36. Synthesis, characterization and photoluminescence of CeO2 nanoparticles by a facile method at room temperature10.1016/j.jallcom.2009.12.053 ↗
37. The photoluminescence properties and reversible photoinduced spectral change of CeO2 bulk, film and nanocrystals10.1002/pssb.200844419 ↗
38. Large schottky barriers for Ni/p-GaN contacts
39. Structure and properties of cerium oxides in bulk and nanoparticulate forms10.1016/j.jallcom.2013.09.013 ↗
40. Oxygen vacancies in transition metal and rare earth oxides: current state of understanding and remaining challenges10.1016/j.surfrep.2007.03.002 ↗
41. Pathak · 2014
42. Nanostructured oxides in chemistry: characterization and properties10.1021/cr030032f ↗
43. Cerium-based oxide coatings10.1016/j.cossms.2014.11.005 ↗
44. ZnO single nanowire-based UV detectors
45. A study of ultrasonic spray pyrolysis deposited rutile-TiO2-based metal-semiconductor-metal ultraviolet photodetector10.1016/j.mssp.2016.10.005 ↗
46. Physical properties of annealed ZnO nanowire/CuSCN heterojunctions for self-powered UV photodetectors10.1021/am5089605 ↗
47. High response solar-blind ultraviolet photodetector based on Zr0.5Ti0.5O2 film10.1016/j.apsusc.2012.12.084 ↗
48. Investigation on improved performance of Erbium doped TiO2 nanowire based UV detector10.1016/j.materresbull.2018.03.024 ↗
49. Fabrication AlGaN/GaN MIS UV photodetector by H2O2 oxidation
50. Post annealing effects on Er2O3 nanowire arrays for improved photodetection10.1109/TNANO.2018.2869223 ↗
51. All metal oxide-based transparent and flexible photodetector10.1016/j.mssp.2018.07.027 ↗
52. High internal gain axial SiOx-In2-xO3-y/Au heterostructure nanocolumnar array based schottky detector for broad band recognition10.1166/jnn.2015.10289 ↗