Publication detail

Preparation of GaN Nanocrystals with Single Ag Cores

ČALKOVSKÝ, V. MACH, J. BARTOŠÍK, M. PIASTEK, J. KOSTKA, M. MIKERÁSEK, V. SUPALOVÁ, L. KONEČNÝ, M. KVAPIL, M. HORÁK, M. ŠIKOLA, T.

Original Title

Preparation of GaN Nanocrystals with Single Ag Cores

Type

journal article in Web of Science

Language

English

Original Abstract

We report on a low-temperature hybrid method for the preparation of GaN nanocrystals (NCs) with embedded single Ag cores. GaN growth is realized by a physical vapor deposition of Ga atoms on a SiO2 substrate with colloidal Ag nanoparticles on its surface, assisted with an ultralow energy (50 eV) nitrogen-ion-beam bombardment at temperatures being significantly lower (T < 350 degrees C) than in conventional GaN deposition techniques (e.g., MOCVD, 1000 degrees C). We call this method Low Temperature Droplet Epitaxy (LTDE). The low deposition temperature allows GaN nanocrystals to be prepared with embedded metal-aluminum colloidal nanoparticles as their cores. A combination of STEM, SEM, scanning Auger microscopy, XPS, and AFM was applied to characterize semiconductor and metal nanoparticles. By their implementation, we optimized morphology, structure, and chemical composition of these nanocrystals and, consequently, demonstrated their enhanced photoluminescent properties.

Keywords

LIGHT-EMITTING-DIODES; SPECTROSCOPY; SILVER; ENHANCEMENT; AU

Authors

ČALKOVSKÝ, V.; MACH, J.; BARTOŠÍK, M.; PIASTEK, J.; KOSTKA, M.; MIKERÁSEK, V.; SUPALOVÁ, L.; KONEČNÝ, M.; KVAPIL, M.; HORÁK, M.; ŠIKOLA, T.

Released

12. 9. 2024

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1528-7505

Periodical

Crystal Growth and Design

Year of study

24

Number

19

State

United States of America

Pages from

7904

Pages to

7909

Pages count

6

URL

https://pubs.acs.org/doi/10.1021/acs.cgd.4c00776

BibTex

@article{BUT196734,
  author="Vojtěch {Čalkovský} and Jindřich {Mach} and Miroslav {Bartošík} and Jakub {Piastek} and Marek {Kostka} and Vojtěch {Mikerásek} and Linda {Supalová} and Martin {Konečný} and Michal {Kvapil} and Michal {Horák} and Tomáš {Šikola}",
  title="Preparation of GaN Nanocrystals with Single Ag Cores",
  journal="Crystal Growth and Design",
  year="2024",
  volume="24",
  number="19",
  pages="7904--7909",
  doi="10.1021/acs.cgd.4c00776",
  issn="1528-7505",
  url="https://pubs.acs.org/doi/10.1021/acs.cgd.4c00776"
}