Dual-functional CuO:Fe2O3/n-Si heterojunction with applications in gas sensors and self-powered visible photodetectors
Source abstract
Abstract
CuO and Fe2O3 nanofilms were successively coated on n-Si substrate at 450 degree celsius by DC sputtering method and then annealed to obtain Au/CuO:Fe2O3/n-Si/Al heterojunction. SEM, AFM, absorption and XRD analyses of CuO:Fe2O3 film was carried out. The fabricated Au/CuO:Fe2O3/n-Si/Al heterojunction device exhibited good rectification properties. Gas sensing of the device was also performed. The response of Au/CuO:Fe2O3/n-Si/Al device to hydrogen gas was investigated for gas sensor application. It is seen that the recovery time of CuO:Fe2O3 is shortened, and it also exhibits the highest response to a relative gas concentration of 1000 ppm. It is seen that the surface is sensitive to oxygen, and the substrate has a positive impact on the structure. Therefore, it can be developed as a suitable material for gas sensors. Furthermore, current-voltage measurements of the heterojunction device were performed under different visible light intensities from 100 mW/cm(2) to 250 mW/cm(2) as well as ambient light. The photocurrent increased with increasing light intensity, which was interpreted as an increase in photogenerated carrier density by absorbing more photons at higher intensities. The maximum values of on/off ratio, R and D* were determined as 2.8 x 10(4) (V = 0.0 V), 1.21 A/W (for V = -1.0 V) and 2.71 x 10(12) Jones for 100 mW light power (at V = 0.0 V), respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Gas Sensing Nanomaterials and Sensors · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. UV-Visible photovoltaic detector based on biomaterial-inorganic semiconductor in the propolis/n-Si heterojunction configuration10.1016/j.materresbull.2022.112113 ↗
2. Solution-processed hybrid perovskite photodetectors with high detectivity10.1038/ncomms6404 ↗
3. Highly sensitive self-powered UV-visible photodetector based on ZrO2-RGO nanofibers/n-Si heterojunction10.1016/j.jallcom.2022.168054 ↗
4. Enhanced self-powered CsCu2I3/GaN heterojunction UV photodetectors based on highly oriented CsCu2I3 thin films10.1016/j.jallcom.2023.171573 ↗
5. Improving the performance of the self-powered polymer-based UV/Vis photodetectors via carbon fibers10.1088/1402-4896/acab9e ↗
6. Surface passivation of CsPbBr3 films by interface engineering in efficient and stable self-powered perovskite photodetector10.1016/j.jallcom.2023.171434 ↗
7. Wafer-scale heterogeneous integration of self-powered lead-free metal halide UV photodetectors with ultrahigh stability and homogeneity10.1016/j.jmst.2023.05.007 ↗
8. Temperature dependence of the electrical and interface states of the Sn/Rhodamine-101/p-Si Schottky structures10.1016/j.synthmet.2008.11.025 ↗
9. The analysis of the electrical and photovoltaic properties of Cr/p-Si structures using current-voltage measurements10.1007/s12633-017-9731-x ↗
10. Characterization of CuO/n-Si heterojunction solar cells produced by thermal evaporation
11. Unravelling the role of nickel incorporation on the physical properties of CuO thin films deposited by spray pyrolysis and theoretical analysis of nanostructured ZnO/Ni:CuO-based heterojunction solar cells10.1007/s10854-023-10167-6 ↗
12. Comparison of electrical properties of CuO/n-Si contacts with Cu/n-Si
13. Fabrication and improved photocatalytic performance of Pd/α-Fe2O310.1080/15533174.2013.843544 ↗
14. Mesoporous CuO–Fe2O3 composite catalysts for low-temperature carbon monoxide oxidation10.1016/j.apcatb.2007.10.005 ↗
15. Synthesis and characterization of Pd-doped α-Fe2O3 H2S sensor with low power consumption10.1016/j.mseb.2007.04.004 ↗
16. Preparation and characterization of NiO(core)/Fe2O3(shell) composite particles10.1016/j.jssc.2003.12.004 ↗
17. Improved photocatalytic activity of dysprosium-doped Bi2O3 prepared by sol–gel method10.1016/j.mssp.2012.09.007 ↗
18. Highly energetic flexible all-solid-state asymmetric supercapacitor with Fe2O3 and CuO thin films10.1039/C6RA11896H ↗
19. Fe2O3-CuO nanocomposites prepared by a two-step vapor phase strategy and analyzed by XPS10.1116/11.20140101 ↗
20. Hydrophobic calcium carbonate for cement surface10.3390/cryst7120371 ↗
21. CuO@Fe2O3 catalyzed C1-alkynylation of tetrahydroisoquinolines (THIQs) via A3 coupling and its decarboxylative strategies10.1039/C7NJ01618B ↗
22. Structure, texture and catalytic properties of CuO/Fe2O3 and CuFe2O410.1177/026361749601300603 ↗
23. New approaches for improving semiconductor gas sensors10.1016/0925-4005(91)80213-4 ↗
24. The effect of Mn incorporation on the structural, morphological, optical, and electrical features of nanocrystalline ZnO thin films prepared by chemical spray pyrolysis technique10.1007/s11661-015-2875-7 ↗
25. Impact of zinc on the physical and morphological properties of sputtered copper oxide thin films10.1016/j.ceramint.2022.10.273 ↗
26. CuO enhances the photocatalytic activity of Fe2O3 through synergistic reactive oxygen species interactions10.1016/j.colsurfa.2020.125179 ↗
27. Estimation of particle size using the Debye equation and the Scherrer formula for polyphasic TiO2 powder10.1088/1742-6596/1410/1/012057 ↗
28. Interfacial engineering of Cu–Fe2O3 nanotube arrays with built-in electric field and oxygen vacancies for boosting the electrocatalytic reduction of nitrates10.1039/D2MA00685E ↗
29. Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni10.1016/j.apsusc.2010.10.051 ↗
30. Fabrication and characterization of α -Fe2O3/CuO heterostructure thin films via dip-coating technique for improved photoelectrochemical performance10.1088/2043-6254/ab3d2f ↗
31. Construction of leaf-like CuO–Cu2O nanocomposites on copper foam for high-performance supercapacitors10.1039/C7DT00287D ↗
32. Highly efficient high-pressure homogenization approach for scalable production of high-quality graphene sheets and sandwich-structured α-Fe2O3/graphene hybrids for high-performance lithium-ion batteries10.1021/acsami.7b00808 ↗
33. Thermal analysis of photoelectron emission (PE) and X-ray photoelectron spectroscopy (XPS) data for iron surfaces scratched in air, water, and liquid organics10.3390/app10062111 ↗
34. Oxygen partial pressure effects on the RF sputtered p-type NiO hydrogen gas sensors10.1016/j.apsusc.2017.11.133 ↗
35. Metal oxide semiconductors for gas sensing
36. Synthesis of CuO thin films by a direct current reactive sputtering process for CO gas sensing application10.1088/1402-4896/acb866 ↗
37. p-Type α-Fe2O3 nanowires and their n-type transition in a reductive ambient10.1002/smll.200700004 ↗
38. Exploring the formation of intrinsic p-type and n-type defects in CuO
39. The effect of the change in the amount of Sb doping in ZnO nanorods for hydrogen gas sensors10.1016/j.ijhydene.2021.03.229 ↗
40. CuO and CuO/TiO2-y thin-film gas sensors of H2 and NO2
41. Sputter-grown Pd-capped CuO thin films for a highly sensitive and selective hydrogen gas sensor10.1007/s11664-020-08588-8 ↗
42. The electrical properties of photodiodes based on nanostructure gallium doped cadmium oxide/p-type silicon junctions10.1007/s12648-016-0952-4 ↗
43. Self-powered photosensor based on curcumin:reduced graphene oxide (CU:rGO)/n-Si heterojunction in visible and UV regions10.1016/j.jallcom.2022.165428 ↗
44. Synthesis characterization of SnO2 nanofibers (NFs) and application of high-performing photodetectors based on SnO2 NFs/n-Si heterostructure10.1016/j.sna.2022.113631 ↗
45. Highly sensitive, self-powered photodetector based on reduced graphene oxide- polyvinyl pyrrolidone fibers (Fs)/p-Si heterojunction10.1016/j.jallcom.2021.161647 ↗