Effects of doping and epitaxy on optical behavior of NaNbO3 films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00452105" target="_blank" >RIV/68378271:_____/15:00452105 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/15:00235950

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4934850" target="_blank" >http://dx.doi.org/10.1063/1.4934850</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4934850" target="_blank" >10.1063/1.4934850</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of doping and epitaxy on optical behavior of NaNbO3 films

Popis výsledku v původním jazyce

Cube-on-cube epitaxy of perovskite sub-cell of Pr-doped and undoped NaNbO3 is obtained in 130- nm-thick films on top of (La0,18Sr0,82)(Al0,59Ta0,41)O3 (001) substrates. Experimental studies show that the edge of optical absorption red-shifts and some interband transitions change in the films compared to crystals. Bright red luminescence is achieved at room-temperature under ultraviolet excitation in the Pr-doped film. An interband mechanism of luminescence excitation is detected in the film, which is incontrast to the intervalence charge transfer mechanism in the crystal. The results are discussed in terms of epitaxially induced changes of crystal symmetry and ferroelectric polarization in the films. It is suggested that the band structure and interband transitions in NaNbO3 and the transition probabilities in the Pr ions can be significantly modified by these changes.

Název v anglickém jazyce

Effects of doping and epitaxy on optical behavior of NaNbO3 films

Popis výsledku anglicky

Cube-on-cube epitaxy of perovskite sub-cell of Pr-doped and undoped NaNbO3 is obtained in 130- nm-thick films on top of (La0,18Sr0,82)(Al0,59Ta0,41)O3 (001) substrates. Experimental studies show that the edge of optical absorption red-shifts and some interband transitions change in the films compared to crystals. Bright red luminescence is achieved at room-temperature under ultraviolet excitation in the Pr-doped film. An interband mechanism of luminescence excitation is detected in the film, which is incontrast to the intervalence charge transfer mechanism in the crystal. The results are discussed in terms of epitaxially induced changes of crystal symmetry and ferroelectric polarization in the films. It is suggested that the band structure and interband transitions in NaNbO3 and the transition probabilities in the Pr ions can be significantly modified by these changes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA15-15123S" target="_blank" >GA15-15123S: Epitaxně stabilizované perovskitové feroelektricko-magnetické tuhé roztoky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Physics Letters

ISSN

0003-6951

e-ISSN

—

Svazek periodika

107

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

—

Kód UT WoS článku

000364234200034

EID výsledku v databázi Scopus

2-s2.0-84946048781