Lithography-Free random bismuth nanostructures for full solar spectrum harvesting and mid-infrared sensing

Date

2019-12

Author

Soydan, Mahmut Can
Ghobadi, Amir
Yıldırım, Deniz Umut
Duman, Elif Sarıgül
Bek, Alpan
Ertürk, Vakur Behçet
Özbay, Ekmel

Metadata

Show full item record

Item Usage Stats

411
views

0
downloads

A lithography-free, double-functional single bismuth (Bi) metal nanostructure is designed, fabricated, and characterized for ultrabroadband absorption in the visible (vis) and near-infrared (NIR) ranges, and for a narrowband response with ultrahigh refractive index sensitivity in the mid-infrared (MIR) range. To achieve a large-scale fabrication of the design in a lithography-free route, the oblique-angle deposition approach is used to obtain densely packed and randomly spaced/oriented Bi nanostructures. It is shown that this fabrication technique can provide a bottom-up approach to controlling the length and spacing of the design. The characterization findings reveal a broadband absorbance above 0.8 in vis and NIR, and a narrowband absorbance centered around 6.54 mu m. Dense architecture and extraordinary permittivity of Bi provide strong field confinement in ultrasmall gaps between nanostructures, and this can be utilized for a sensing application. An ultrahigh sensitivity of 2151 nm refractive-index unit (RIU-1) is acquired, which is, as far as it is known, the experimentally highest sensitivity attained so far. The simple and large-scale compatible fabrication route of the design together with the extraordinary optical response of Bi coating makes this design promising for many optoelectronic and sensing applications.

Subject Keywords

Bismuth, Broadband absorbers, Lithography‐free fabrication, Narrowband absorbers, Ultrahigh sensitivity

URI

https://hdl.handle.net/11511/28646

Journal

10.1002/adom.201901203

DOI

https://doi.org/10.1002/adom.201901203

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Synthesis and electropolymerization of a new ion sensitive ethylenedioxy-substituted terthiophene monomer bearing a quinoxaline moiety Carbas, Buket Bezgin; Kivrak, Arif; Zora, Metin; Önal, Ahmet Muhtar (2012-07-15) A new terthienyl based fluorescent polymer bearing pendant quinoxaline moieties directly attached to the 3-positions of the central thiophene ring was synthesized by electrochemical polymerization of 4-(2,5-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)thiophen-3-yl)Pyrrolo[1,2-a]quinoxaline (EE-Q). The corresponding polymer, poly(4-(2,5-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)thiophen-3-yl)pyrrolo[1,2-a]quinoxaline) P(EE-Q), was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The po...
Synthesis of a novel fluorescent and ion sensitive monomer bearing quinoxaline moieties and its electropolymerization Carbas, Buket Bezgin; KIVRAK, Arif; Zora, Metin; Önal, Ahmet Muhtar (Elsevier BV, 2011-05-01) A novel terthienyl based fluorescent polymer bearing pendant quinoxaline moieties directly attached to the 3-positions of the central thiophene ring was synthesized by electrochemical polymerization of 4-((2,5-dithiophen-2-yl)thiophen-3-yl)pyrrolo[1,2-a]quinoxaline (TT-Q). The corresponding polymer was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The polymer exhibits a reversible redox behavior (Ep(1/2) = 1.05 V) accompanied with a reversible electrochromic behavior; yellowish orange ...
Attoliter fluid experiments in individual closed-end carbon nanotubes: Liquid film and fluid interface dynamics Megaridis, CM; Güvenç Yazıcıoğlu, Almıla; Libera, JA; Gogotsi, Y (2002-02-01) A hydrothermal method of catalytic nanotube synthesis has been shown to produce high-aspect-ratio, multiwall, capped carbon nanotubes, which are hollow and contain a high-pressure encapsulated aqueous multicomponent fluid displaying clearly segregated liquid and gas by means of well-defined curved menisci. Thermal experiments are performed using electron irradiation as a means of heating the contents of individual nanotubes in the high vacuum of a transmission electron microscope (TEM). The experiments clea...
Electrochemical sensing of glucose using conjugated polymer/chitosan/mwcnt architecture Özel, Hande; Toppare, Levent Kamil; Söylemez, Saniye; Department of Polymer Science and Technology (2018) In this thesis an amperometric biosensor consisting of a conjugated polymer, chitosan and multi-walled carbon nanotubes constructed for the detection of glucose. Conjugated polymers have opened a new era for the development of biosensing platforms with their unique electronic properties, high stabilities and processabilities. They serve both as immobilization matrices for biorecognition elements and as transducers in biosensing devices. As an additional modification material, chitosan was participated in th...
Chemical preparation of the binary compounds of CaO-Al2O3 system by combustion synthesis Uysal, O; Tas, AC (1997-05-07) The binary compounds (C(3)A: Ca3Al2O6, C(12)A(7): Ca12Al14O33, CA: CaAl2O4, CA(2): CaAl4O7 and CA(6): CaAl12O19) of CaO-Al2O3 system have been synthesized as high compound-purity ceramic powders by using the Combustion Synthesis (CS) method. Materials characterization of the above-mentioned phases were performed by powder XRD, FTIR, SEM and EDXS. It has hereby been shown that by using this synthesis procedure it would be possible to manufacture high-purity ceramic powders of CA, CA(2), and C(12)A(7) at 850 ...

Citation Formats

M. C. Soydan et al., “Lithography-Free random bismuth nanostructures for full solar spectrum harvesting and mid-infrared sensing,” 10.1002/adom.201901203, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28646.