Enhanced photoelectrochemical performance of carbon nanotubes-modified black TiO2 nanotube arrays for self-driven photodetectors
Source abstract
Abstract
Self-driven ultraviolet photodetectors based on wide-bandgap semiconductors have been well investigated but are still being explored for further performance enhancement. Here we report a self-driven electrochemical ultraviolet photodetector (EUVPD) using a three-dimensional nanostructured photoanode based on defect-engineered TiO2 nanotube arrays (TNAs) modified with single-walled carbon nanotubes (SWCNTs) to enhance photoelectric performance. The EUVPDs based on Ar-annealed TNAs modified with 0.1 mg/mL of SWCNTs were found to have higher responsivity (∼60 mA/W), higher on/off current ratio (∼4.3 × 103), the faster response time (4 ms of rise-time and 27 ms of decay-time) when compared with unmodified and air-annealed ones. This performance enhancement is attributed to the highly efficient separation and transport of photoexcited carriers through the electrochemical redox reaction in the SWCNTs network anchored on the defect-engineered TNAs/electrolyte heterojunction nanostructure.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ga2O3 and related materials · Advanced Photocatalysis Techniques · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Fabrication and characterization of undoped and cobalt-doped ZnO based UV photodetector prepared by RF-sputtering10.1016/j.jmst.2013.10.007 ↗
2. Piezo-phototronic effect modulated deep UV photodetector based on ZnO-Ga2O3 heterojuction microwire10.1002/adfm.201706379 ↗
3. TiO2 nanorod arrays based self-powered UV photodetector: heterojunction with NiO nanoflakes and enhanced UV photoresponse10.1021/acsami.7b18815 ↗
4. A self-powered UV photodetector based on TiO2 nanorod arrays10.1186/1556-276X-8-188 ↗
5. Self-powered nanodevices for fast UV detection and energy harvesting using core-shell nanowire geometry10.1016/j.nanoen.2018.06.065 ↗
6. Effect of MgO surface modification on the TiO2 nanowires electrode for self-powered UV photodetectors10.1021/acssuschemeng.7b04188 ↗
7. Fast charge separation and photocurrent enhancement on black TiO2 nanotubes co-sensitized with Au nanoparticles and PbS quantum dots10.1016/j.electacta.2018.05.014 ↗
8. Photoelectrochemical cells10.1038/35104607 ↗
9. Face-to-face intercrossed ZnO nanorod arrays with extensive NR-NR homojunctions for a highly sensitive and self-powered ultraviolet photodetector10.1016/j.nanoen.2019.104042 ↗
10. Comprehensive pyro-phototronic effect enhanced ultraviolet detector with ZnO/Ag Schottky junction10.1002/adfm.201807111 ↗
11. General fabrication of monolayer SnO2 nanonets for high-performance ultraviolet photodetectors10.1002/adfm.201102506 ↗
12. Hydrogenated TiO2 nanotube Arrays for supercapacitors10.1021/nl300173j ↗
13. Dye-sensitized TiO2 nanotube solar cells with markedly enhanced performance via rational surface engineering10.1021/cm903164k ↗
14. Selective detection of organic vapors using TiO2 nanotubes based single sensor at room temperature10.1016/j.snb.2019.03.115 ↗
15. Sensitivity enhancement in photoionization detector using microelectrodes with integrated 1D nanostructures10.1016/j.snb.2019.03.045 ↗
16. Room temperature toluene gas sensor based on TiO2 nanoparticles decorated 3D graphene-carbon nanotube nanostructures10.1016/j.snb.2018.09.095 ↗
17. Electrocatalytic properties of a vertically oriented graphene film and its application as a catalytic counter electrode for dye-sensitized solar cells10.1039/C4TA02028F ↗
18. Synthesis and application of highly ordered arrays of TiO2 nanotubes10.1039/b701168g ↗
19. Photoconductive, free-standing crystallized TiO2 nanotube membranes10.1016/j.electacta.2013.01.116 ↗
20. Non-aligned ZnO nanowires composited with reduced graphene oxide and single-walled carbon nanotubes for highly responsive UV-visible photodetectors10.1016/j.compositesb.2019.01.087 ↗
21. Characterization of the chemical interaction between single-walled carbon nanotubes and titanium dioxide nanoparticles by thermogravimetric analyses and resonance Raman spectroscopy10.1016/j.vibspec.2016.06.012 ↗
22. One-dimensional titanium dioxide nanomaterials: nanotubes10.1021/cr500061m ↗
23. Graphene/ZnO nanocomposite as an electron transport layer for perovskite solar cells; the effect of graphene concentration on photovoltaic performance10.1039/C7RA02036H ↗
24. Purification of aromatic hydrocarbons using Ag–multiwall carbon nanotube–ZnO nanocomposites with high performance10.1016/j.jiec.2016.11.018 ↗
25. Significant efficiency improvement of the black dye-sensitized solar cell through protonation of TiO2 films10.1021/la050134w ↗
26. Hierarchical vertically oriented graphene as a catalytic counter electrode in dye-sensitized solar cells10.1039/C2TA00380E ↗
27. Efficient polysulfide electrolyte for CdS quantum dot-sensitized solar cells10.1016/j.jpowsour.2008.07.014 ↗