Ammonothermal Synthesis and Optical Properties of Ternary Nitride Semiconductors Mg-IV-N2, Mn-IV-N2 and Li-IV2-N3 (IV = Si, Ge)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43951096" target="_blank" >RIV/49777513:23640/18:43951096 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/chem.201704973" target="_blank" >http://dx.doi.org/10.1002/chem.201704973</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/chem.201704973" target="_blank" >10.1002/chem.201704973</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ammonothermal Synthesis and Optical Properties of Ternary Nitride Semiconductors Mg-IV-N2, Mn-IV-N2 and Li-IV2-N3 (IV = Si, Ge)

Popis výsledku v původním jazyce

Grimm–Sommerfeld analogous nitrides MgSiN2, MgGeN2, MnSiN2, MnGeN2, LiSi 2N3 and LiGe2N3 (generally classified as II-IV-N2 and I-IV2-N3) are promising semiconductor materials with great potential for application in (opto) - electronics or photovoltaics. A new synthetic approach for these nitride materials was developed using supercritical ammonia as both solvent and nitride-forming agent. Syntheses were conducted in custom-built high-pressure autoclaves with alkali metal amides LiNH2, NaNH2 or KNH2 as ammonobasic mineralizers, which accomplish an adequate solubility of the starting materials and promote the formation of reactive intermediate species. The reactions were performed at temperatures between 870 and 1070 K and pressures up to 230 MPa. All studied compounds crystallize in wurtzitederived superstructures with orthorhombic space groups Pna21 (II-IV-N2) and Cmc21 (I-IV2-N3), respectively, which was confirmed by powder X-ray diffraction. Optical bandgaps were estimated from diffuse reflectance spectra using the Kubelka–Munk function (MgSiN2 : 4.8 eV, MgGeN2 : 3.2 eV, MnSiN2 : 3.5 eV, MnGeN2 : 2.5 eV, LiSi2N3 : 4.4 eV, LiGe2N3: 3.9 eV). Complementary DFT calculations were carried out to gain insight into the electronic band structures of these

Název v anglickém jazyce

Ammonothermal Synthesis and Optical Properties of Ternary Nitride Semiconductors Mg-IV-N2, Mn-IV-N2 and Li-IV2-N3 (IV = Si, Ge)

Popis výsledku anglicky

Grimm–Sommerfeld analogous nitrides MgSiN2, MgGeN2, MnSiN2, MnGeN2, LiSi 2N3 and LiGe2N3 (generally classified as II-IV-N2 and I-IV2-N3) are promising semiconductor materials with great potential for application in (opto) - electronics or photovoltaics. A new synthetic approach for these nitride materials was developed using supercritical ammonia as both solvent and nitride-forming agent. Syntheses were conducted in custom-built high-pressure autoclaves with alkali metal amides LiNH2, NaNH2 or KNH2 as ammonobasic mineralizers, which accomplish an adequate solubility of the starting materials and promote the formation of reactive intermediate species. The reactions were performed at temperatures between 870 and 1070 K and pressures up to 230 MPa. All studied compounds crystallize in wurtzitederived superstructures with orthorhombic space groups Pna21 (II-IV-N2) and Cmc21 (I-IV2-N3), respectively, which was confirmed by powder X-ray diffraction. Optical bandgaps were estimated from diffuse reflectance spectra using the Kubelka–Munk function (MgSiN2 : 4.8 eV, MgGeN2 : 3.2 eV, MnSiN2 : 3.5 eV, MnGeN2 : 2.5 eV, LiSi2N3 : 4.4 eV, LiGe2N3: 3.9 eV). Complementary DFT calculations were carried out to gain insight into the electronic band structures of these

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

CHEMISTRY-A EUROPEAN JOURNAL

ISSN

0947-6539

e-ISSN

—

Svazek periodika

24

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

1686-1693

Kód UT WoS článku

000423804800027

EID výsledku v databázi Scopus

2-s2.0-85041302017