White, blue and cyan luminescence from thermally oxidized porous silicon coated by green synthesized carbon nanostructures
Source abstract
Abstract
White light emitting nanostructured composites were produced in this work after annealing of aged thermally oxidized porous silicon (PS) coated by green synthesized Carbon Nanostructures (CNs). According to the photoluminescence (PL) spectra of the nanostructured composites, a broad band emission (white luminescence) was observed from ultraviolet to near infrared. Depending on the presence of hydrogen species, the interaction of nanostructures with oxide layers and the quality of the oxide layers, significantly affected the luminescence mechanism. Intense blue light emitting and cyan light emitting nanostructured composites were also obtained during the production process. In this work, a new method is proposed for obtaining white, blue and cyan luminescence by coating the thermally oxidized PS with the green synthesized CNs, which enables a tremendously cheap, clean and effortless production procedure for the redesign of instruments such as LEDs, photodetectors and biosensors which are extremely important for optoelectronic and biomedical applications. This new method enables the tailoring of the luminescence through thermal oxidation and aging of PS, and annealing of the nanostructured composites.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Silicon Nanostructures and Photoluminescence · Carbon and Quantum Dots Applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Electrochemical synthesis of MoS2 quantum dots embedded nanostructured porous silicon with enhanced electroluminescence property10.1016/j.optmat.2017.09.029 ↗
2. Role of graphene on the optoelectrical stability of photodetectors based on porous silicon10.1016/j.sna.2020.112065 ↗
3. Photodetectors based on porous silicon produced by Ag-assisted electroless etching10.1016/j.optmat.2007.03.007 ↗
4. Synthesis and characterization of a nanostructured porous silicon/carbon dot-hybrid for orthogonal molecular detection10.1038/am.2017.233 ↗
5. White light luminescence from annealed thin ZnO deposited porous silicon10.1016/j.jlumin.2010.02.042 ↗
6. Recent development in rare earth doped phosphors for white light emitting diodes10.1016/S1002-0721(14)60375-6 ↗
7. High-performance Al2O3–Ce:YAG ceramics for white LED and LD by the optimization of Ce3+ concentration10.1016/j.optmat.2020.110448 ↗
8. High sensitivity detection of CdSe/ZnS quantum dot-labeled DNA based on N-type porous silicon microcavities
9. Biomedical applications of nanostructured porous silicon: a review10.1117/1.3496303 ↗
10. Non-blinking dendritic crystals from C-dot solution10.5714/CL.2015.16.3.211 ↗
11. Luminescent carbon nanostructures for microRNA detection10.1016/j.trac.2019.07.024 ↗
12. An aqueous route to multicolor photoluminescent carbon dots using silica spheres as carriers10.1002/ange.200900652 ↗
13. Optical properties comparison of carbon nanodots synthesized from commercial granulated sugar using hydrothermal method and microwave10.1088/2053-1591/ab3952 ↗
14. Microwave assisted one-step green synthesis of cell-permeable multicolor photoluminescent carbon dots without surface passivation reagents10.1039/c0jm02963g ↗
15. Carboxylic carbon quantum dots as a fluorescent sensing platform for DNA detection10.1021/acsami.5b10160 ↗
16. Theory on the quantum confinement-luminescence center model for nanocrystalline and porous Si10.1063/1.366068 ↗
17. White light from annealed porous silicon: broadband emission from violet to the near infrared10.1016/j.matlet.2015.03.003 ↗
18. Silicon quantum wire array fabrication by electrochemical and chemical dissolution of wafers10.1063/1.103561 ↗
19. The luminescence of porous Si: the case for the surface state mechanism10.1016/0022-2313(93)90145-D ↗
20. Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications10.1039/C8GC02736F ↗
21. Photoluminescence mechanism in graphene quantum dots: quantum confinement effect and surface/edge state10.1016/j.nantod.2016.12.006 ↗
22. Surface chemistry, reactivity, and pore structure of porous silicon oxidized by various methods10.1021/la301642w ↗
23. Fluorescent chemosensor for pyridine based on N-doped carbon dots10.1016/j.jcis.2015.07.053 ↗
24. Carbon dots functionalized gold nanorod mediated delivery of doxorubicin: tri-functional nano-worms for drug delivery, photothermal therapy and bioimaging10.1039/c3tb20761g ↗
25. Synthesis of nanoparticles by laser ablation from heat-treated porous silicon for biomedical applications10.1063/5.0058277 ↗
26. Origins of photoluminescence degradation in porous silicon under irradiation and the way of its elimination10.1016/j.mssp.2017.03.020 ↗
27. Evolution mechanism of mesoporous silicon nanopillars grown by metal-assisted chemical etching and nanosphere lithography: correlation of Raman spectra and red photoluminescence10.1007/s00339-016-0203-8 ↗
28. Characterizations and luminescence properties of annealed porous silicon films10.1016/S0022-0248(02)02048-1 ↗
29. The role of surface oxidation on luminescence degradation of porous silicon10.1016/j.apsusc.2010.12.045 ↗
30. Structure, paramagnetic defects and light-emission of carbon-rich a-SiC:H films10.1063/1.2946446 ↗
31. Preparation of porous silicon/carbon microspheres as high performance anode materials for lithium ion batteries10.1039/C4TA07093C ↗
32. Synthesis of biocompatible multicolor luminescent carbon dots for bioimaging applications10.1088/1468-6996/13/4/045008 ↗
33. Silicon–calcium phosphate composite nanoparticles synthesized by laser ablation of a thermally oxidized porous silicon/hydroxyapatite composite10.1016/j.ceramint.2021.06.217 ↗
34. Preparation and photoelectrochemical properties of porous silicon/carbon dots composites
35. The scherrer formula for X-ray particle size determination10.1103/PhysRev.56.978 ↗
36. Socrates · 2001
37. Stabilization of porous silicon surface by thermal decomposition of acetylene10.1016/j.apsusc.2003.10.028 ↗
38. Synthesis of mesoporous carbon-silica nanocomposite water-treatment membranes using a triconstituent co-assembly method10.1039/C5TA01328C ↗
39. Carbothermal synthesis of porous silicon carbide using mesoporous silicas10.1007/s10853-016-0652-7 ↗
40. Photoexcitation of Si-Si surface states in nanocrystallites10.1103/PhysRevB.56.2079 ↗