2020年12月31日 · We synthesized PbS/CdS core/shell quantum dots (QDs) to have functional single-emitter properties for room-temperature, solid-state operation in the telecom O and S bands. Two shell-growth methods—cation exchange and successive ionic layer adsorption and reaction (SILAR)—were employed to prepare QD heterostructures with shells of …

2024年3月18日 · Lead sulfide quantum dots (PbS QDs) are used in broadband photodetectors due to their excellent size tunability, photosensitivity, and solution processability. However, due to the risk of Ostwald ripening, synthesizing high-quality PbS QDs with absorption peaks over 2000 nm with high monodispersity is a challenge.

2020年7月27日 · Herein, we report the fabrication and characterization of a graphene/PbS QD hybrid structure for application in near-infrared PDs. Graphene flakes were dispersed in butylamine and hexane to...

2023年8月1日 · PbS quantum dots (QDs) with size-dependent photoelectric characteristics and wide spectral absorption show a great potential material for preparing near-infrared photodetectors, attracting numerous studies. This paper prepared size-tunable PbS QDs with a mean size varying from 3 nm to 9 nm via a modified hot injection method.

2023年5月26日 · Here we report the electrical transport studies in PbS epitaxially-connected colloidal QD superlattice (QD-SL) and the observation of insulator-to-metal transition (IMT) by electric-field-induced...

PbS QDs solids are easily soluble in octane, or any other non-polar solvents (hexane, toluene, chloroform, chlorobenzene, dichlorobenzene) in a wide range of concentrations up to 100-150 mg/mL (see Table 1).

2025年1月2日 · PbS quantum dots (QDs) are promising materials for low-cost short-wave infrared (SWIR) photodetection and imaging applications, owing to their unique optical properties and tunable bandgap. High-performance photodiodes rely on thiol-treated small PbS QDs as the hole transport layer (HTL) due to their suitable band alignment, but they face ...

2018年11月1日 · PbS QDs are a suitable choice for diode laser, infrared detector and solar cell applications due to their interesting electrical and optical properties such as band gap tunability, strong absorption over a broad wavelength region, large dipole moment, enhanced multiple exciton generation (MEG) and low-cost solution processability [3], [4], [5 ...

Optical properties of PbS QDs embedded inside glass matrix were investigated for the potential application towards the fiber-optic amplifiers. Controllability of PbS QDs formation was...

分别采用共沉淀法和简单化学浴法制备了PbS纳米粒子（NPs）和PbS量子点（QDs），并对其热电性能进行了比较研究。 通过XRD、UV-DRS、FTIR和BET分析对PbS NPs和PbS QDs的结构、形态、光学、官能团和孔径进行了分析。