Синтез и оптические свойства гибридных наноструктур на основе плазмонных наночастиц серебра и нитевидных нанокристаллов InGaN

Journal of Optical Technology. 2024. Т. 91. № 1. С. 3–13.

Шугабаев Т., Гридчин В. О., Мельниченко И. А., Лендяшова В. В., Новикова К. Н., Котляр К. П., Кулагина А. С., Kryzhanovskaya N., Цырлин Г. Э.

Subject of study. The subject of this study was the integration of indium gallium nitride (InGaN) nanowires with silver nanoparticles and the examination of the photoluminescent properties of the resulting hybrid nanostructures. Aim of study. This study aimed to improve the luminescent characteristics of InGaN nanowires by decorating their surface with colloidal silver nanoparticles. Method. Silver nanoparticles of various sizes and nanoparticles with a silver/silicon oxide core/shell structure were synthesized using colloidal chemistry. Indium gallium nitride nanowires were fabricated using molecular beam epitaxy. The morphology and dimensions of the obtained samples were studied using scanning electron microscopy. The optical properties were characterized using spectral methods. Main results. A red shift in the wavelength of the localized plasmon resonance of the nanoparticles was demonstrated with increasing diameter and passivation of the nanoparticle surface by a silicon oxide shell. Nanowires with a spontaneously formed InGaN/GaN core–shell structure exhibiting photoluminescence at room temperature in the yellow-orange region were synthesized. It was shown for the first time to our knowledge that the deposition of colloidal silver/silicon oxide nanoparticles onto the surface of InGaN nanowires leads to an increase in the photoluminescence intensity of the initial structures by a factor of 2.2. Practical significance. InGaN nanowires are promising solid-state nanostructures for the fabrication of visible-light-emitting devices integrated with a silicon platform. The synthesis of hybrid nanostructures based on InGaN nanowires and silver nanoparticles can increase the luminescence efficiency of the original nanowires. In particular, the hybrid nanostructure proposed herein can be used to develop optically pumped subwavelength lasers based on InGaN nanowires.

Keywords: плазмоника, nanowires, гибридные наноструктуры, hybrid nanostructures, plasmonics, silver nanoparticles, нитевидные нанокристаллы, indium-gallium nitride, photoluminescence intensity enhancement, нитрид индия-галлия, наночастицы серебра, увеличение интенсивности фотолюминесценции

Publication based on the results of: Creation and investigation of semiconductor micro- and nanolasers for photonic integrated circuits (2024)