ArticleScientific reports2014
A layer-nanostructured assembly of PbS quantum dot/multiwalled carbon nanotube for a high-performance photoswitch.
Article in Scientific reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Ternary Chalcogenide-Based Quantum Dots and Carbon Nanotubes: Establishing a Toolbox for Controlled Formation of Nanocomposites.The journal of physical chemistry. C, Nanomaterials and interfaces · 2022Article
- Flexible hybrid photodetector based on silver sulfide nanoparticles and multi-walled carbon nanotubes.RSC advances · 2021Article
- Charge transfer between lead halide perovskite nanocrystals and single-walled carbon nanotubes.Nanoscale advances · 2020Article
- Infrared tunable, two colour-band photodetectors on flexible platforms using 0D/2D PbS-MoSNanoscale advances · 2019Article
- Switching the optical and electrical properties of carbon nanotube hybrid films using a photoresponsive dispersant as a dopant.RSC advances · 2018Article
- High-performance nanotube-enhanced perovskite photodetectors.Scientific reports · 2017Article
- Facile synthesis of silicon nitride nanowires with flexible mechanical properties and with diameters controlled by flow rate.Scientific reports · 2017Article
- Enhanced charge carrier transport properties in colloidal quantum dot solar cellsJournal of materials chemistry. A · 2016Article
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Authors and funding
7 authors.
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Abstract
A layered nanostructure of a lead sulfide (PbS) quantum dot (QD)/multi-walled carbon nanotube (MWNT) hybrid was prepared by the electrostatic assembly after the phase transfer of PbS QDs from an organic to an aqueous phase. Well-crystallized PbS QDs with a narrow diameter (5.5 nm) was mono-dispersed on the sidewalls of MWNT by the electrostatic adsorption. Near-infrared absorption of PbS/MWNT nanostructures was improved and controlled by the packing density of PbS QDs. Efficient charge transfer between PbS and MWNT at the interface resulted in a remarkable quenching of photoluminescence up to 28.6% and a blue-shift of emission band by 300 nm. This feature was facilitated by band energy levels based on the intimate contact through the electrostatic interaction. Two-terminal devices using PbS/MWNT nanostructures showed an excellent on/off switching photocurrent and good stability during 20 cycles under light illumination due to electron transfer from PbS to MWNT. The photoswitch exhibited a high photo sensitivity up to 31.3% with the photocurrent of 18.3 μA under the light of 3.85 mW/cm(2), which outperformed many QD/carbon-based nanocomposites. Results indicate that the electrostatic layered assembly of QD/MWNT nanostructure is an excellent platform for the fabrication of high-performance optoelectronic devices.
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