Simultaneous Imaging of Dopants and Free Charge Carriers by Monochromated EELS
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU146840" target="_blank" >RIV/00216305:26620/22:PU146840 - isvavai.cz</a>
Výsledek na webu
<a href="http://pubs.acs.org/doi/10.1021/acsnano.2c07540" target="_blank" >http://pubs.acs.org/doi/10.1021/acsnano.2c07540</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.2c07540" target="_blank" >10.1021/acsnano.2c07540</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Simultaneous Imaging of Dopants and Free Charge Carriers by Monochromated EELS
Popis výsledku v původním jazyce
Doping inhomogeneities in solids are not uncommon, but their microscopic observation and understanding are limited due to the lack of bulk-sensitive experimental techniques with high enough spatial and spectral resolution. Here, we demonstrate nanoscale imaging of both dopants and free charge carriers in La-doped BaSnO3 (BLSO) using high-resolution electron energy-loss spectroscopy (EELS). By analyzing high-and low-energy excitations in EELS, we reveal chemical and electronic inhomogeneities within a single BLSO nanocrystal. The inhomogeneous doping leads to distinctive localized infrared surface plasmons, including a previously unobserved plasmon mode that is highly confined between high-and low-doping regions. We further quantify the carrier density, effective mass, and dopant activation percentage by EELS and transport measurements on the bulk single crystals of BLSO. These results not only represent a practical approach for studying heterogeneities in solids and understanding structure-property relationships at the nanoscale, but also demonstrate the possibility of infrared plasmon tuning by leveraging nanoscale doping texture.
Název v anglickém jazyce
Simultaneous Imaging of Dopants and Free Charge Carriers by Monochromated EELS
Popis výsledku anglicky
Doping inhomogeneities in solids are not uncommon, but their microscopic observation and understanding are limited due to the lack of bulk-sensitive experimental techniques with high enough spatial and spectral resolution. Here, we demonstrate nanoscale imaging of both dopants and free charge carriers in La-doped BaSnO3 (BLSO) using high-resolution electron energy-loss spectroscopy (EELS). By analyzing high-and low-energy excitations in EELS, we reveal chemical and electronic inhomogeneities within a single BLSO nanocrystal. The inhomogeneous doping leads to distinctive localized infrared surface plasmons, including a previously unobserved plasmon mode that is highly confined between high-and low-doping regions. We further quantify the carrier density, effective mass, and dopant activation percentage by EELS and transport measurements on the bulk single crystals of BLSO. These results not only represent a practical approach for studying heterogeneities in solids and understanding structure-property relationships at the nanoscale, but also demonstrate the possibility of infrared plasmon tuning by leveraging nanoscale doping texture.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
ACS Nano (e-ISSN)
ISSN
1936-0851
e-ISSN
1936-086X
Svazek periodika
16
Číslo periodika v rámci svazku
11
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
11
Strana od-do
1-11
Kód UT WoS článku
000879868100001
EID výsledku v databázi Scopus
2-s2.0-85141761284