One-step synthesis of nail-like Mn-doped CdS/CdBr₂ hetero-nanostructures for potential lasing application

Abstract

Nanoscale heterostructures, which incorporate two or more materials such as core-shell nanocrystals, core-crown nanoplates, or seeded nanorods, allow better control of the optical, electrical and magnetic properties that are inaccessible in single component nanostructure, yet their variety and controlled growth are still challenging. Here, a nail-like Mn-doped CdS/CdBr 2 hetero-nanostructure, which has a hexagonal plate on top of a nanowire, is firstly fabricated by a simple one-step thermal evaporation process. According to the characterization results, its growth mechanism could be obtained, in which the manganese bromide precursor plays a critical role in the formation of such nail morphology. The amplified spontaneous emission of the 'nanonail' is achieved at a low threshold at room temperature, which come from the local and dense exciton scattering due to their interactions excited by fs pulse. These interesting nail-like heterostructures may provide promising templates for constructing high-performance optoelectronic devices.

Au/CdBr2/SiO2/Au Straddling‐Type Heterojunctions Designed as Microwave Multiband Pass Filters, Negative Capacitance Transistors, and Current Rectifiers

“…One example of the applicability of CdBr 2 in optoelectronics is the fabrication of CdS/CdBr 2 heterojunctions which are reported to have potential lasing applications. [ 5 ] This heterojunction was doped with manganese. The manganese bromide interactions are mentioned, playing critical roles in the formation of nanonails.…”

“…An amplified spontaneous emission from the nanonails was observed when excited by femtosecond pulses. [ 5 ] In addition, high‐quality ultralong (millimeter‐level) Van der Waals CdBr 2 micro‐/nanobelts were produced and used as photodetectors. [ 6 ] Similar to AlN photodetectors, [ 7,8 ] CdBr 2 photodetectors displayed high responsivity, nominating them for use in optoelectronics.…”

Facile Synthesis of Potassium-Doped Titanium Oxide Nanostructure (KTiOxs)/AlO(OH) Composites for Enhanced Photocatalytic Performance

“…The optical and electrical properties and catalytic performance of materials strongly depend on their morphology and structure. The high quality of nanostructures with controlled crystalline, grain, and surface architectures is of great fundamental and technological interest because of their promising new properties, which can be valuable for advanced materials [1][2][3][4][5][6][7][8]. In particular, the hierarchical self-assembly of nanoscale materials (e.g., particles, cluster, wires, belts, sheets, and tubes) into novel architectures of a higher dimensionality is highly desirable because these structures could have new properties that can be meaningful for the fabrication of advanced nanodevices and in other nanotechnology applications [9,10].…”

Design of Au/Cdbr2/Au as Negative Capacitance Devices and as Band Filters Suitable for 4G Technologies

“…Cadmium bromide compound capture the interest of researchers due to its nature of applications. It has great potential for lasing applications 1 . This compound is used for the enhancement of the efficiency of CdTe solar cells 2 .…”

“…These films are mentioned exhibiting single crystalline nature. In addition, Mn-doped CdS/CdBr 2 heteronanostructures were prepared by the one step chemical vapor deposition technique 1 . Various methods have been employed to enhance the performance of CdBr 2 thin films.…”