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SM ISO690:2012 CARAMAN, Iuliana, STAMATE, Marius D., EVTODIEV, Silvia, UNTILA, Dumitru, LUCHIAN, Efimia. Photoluminescence of nanolamelar structures with metal dots obtained by GaS monocrystal intercalation. In: Fizică şi tehnică: procese, modele, experimente, 2012, nr. 2, pp. 44-47. ISSN 1857-0437. |
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Fizică şi tehnică: procese, modele, experimente | ||||||
Numărul 2 / 2012 / ISSN 1857-0437 | ||||||
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CZU: 621.311.592 | ||||||
Pag. 44-47 | ||||||
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In this work are studied photoluminescence (PL) spectra from GaS crystals and GaS crystals intercalated with Zn and Cd atoms. Metal atoms were intercalated by 6 hours heat tratament at the temperature of 750 K in metal vapor atmosphere. Gallium dots are created on external surface and between S-Ga-Ga-S packages. This dots are aranged as distorted hexagons. Zn intercalation leads to formation of two PL bands with maximum at 2.12 eV and 2.84 eV, energyes. PL spectra of Cd intercalated crystals containes one simple contour band at 293 K, and two bands at 78 K. Band with maximum at 2.424 eV has a complex structure, composed by fononic repeats of indirect excitons emission. |
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Cuvinte-cheie GaS, single crystals, intercalation, photoluminescence, thermal treatment, GaS, monocristale, intercalare, fotoluminescenţă, tratament termic |
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<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'> <creators> <creator> <creatorName>Caraman, I.M.</creatorName> <affiliation>Universitatea „Vasile Alecsandri”, Bacău, România</affiliation> </creator> <creator> <creatorName>Stamate, M.</creatorName> <affiliation>Universitatea „Vasile Alecsandri”, Bacău, România</affiliation> </creator> <creator> <creatorName>Evtodiev, S.V.</creatorName> <affiliation>Universitatea de Stat din Moldova, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Untila, D.A.</creatorName> <affiliation>Universitatea de Stat din Moldova, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Luchian, E.</creatorName> <affiliation>Universitatea de Stat din Moldova, Moldova, Republica</affiliation> </creator> </creators> <titles> <title xml:lang='en'>Photoluminescence of nanolamelar structures with metal dots obtained by GaS monocrystal intercalation</title> </titles> <publisher>Instrumentul Bibliometric National</publisher> <publicationYear>2012</publicationYear> <relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>1857-0437</relatedIdentifier> <subjects> <subject>GaS</subject> <subject>single crystals</subject> <subject>intercalation</subject> <subject>photoluminescence</subject> <subject>thermal treatment</subject> <subject>GaS</subject> <subject>monocristale</subject> <subject>intercalare</subject> <subject>fotoluminescenţă</subject> <subject>tratament termic</subject> <subject schemeURI='http://udcdata.info/' subjectScheme='UDC'>621.311.592</subject> </subjects> <dates> <date dateType='Issued'>2012-12-03</date> </dates> <resourceType resourceTypeGeneral='Text'>Journal article</resourceType> <descriptions> <description xml:lang='en' descriptionType='Abstract'>In this work are studied photoluminescence (PL) spectra from GaS crystals and GaS crystals intercalated with Zn and Cd atoms. Metal atoms were intercalated by 6 hours heat tratament at the temperature of 750 K in metal vapor atmosphere. Gallium dots are created on external surface and between S-Ga-Ga-S packages. This dots are aranged as distorted hexagons. Zn intercalation leads to formation of two PL bands with maximum at 2.12 eV and 2.84 eV, energyes. PL spectra of Cd intercalated crystals containes one simple contour band at 293 K, and two bands at 78 K. Band with maximum at 2.424 eV has a complex structure, composed by fononic repeats of indirect excitons emission. </description> <description xml:lang='ro' descriptionType='Abstract'>În lucrare sunt studiate spectrele de fotoluminescenţă (FL) a cristalelor de GaS şi GaS intercalat cu atomi de Zn, şi Cd. Intercalarea cu Zn, şi Cd, a lamelor de GaS s-a efectuat prin tratament termic la temperatura 750 K, timp de 6 ore, în atmosferă de vapori ai metalului. Pe suprafaţa exterioară şi în spaţiul dintre împachetările S-Ga-Ga-S se formează puncte de Ga, aranjate preponderent sub formă de hexagoane deformate. Intercalarea cu Zn conduce la formarea a două benzi de FL cu maxim la 2,12 eV şi, respectiv, 2,84 eV. Spectrul de FL a cristalelor GaS intercalate cu Cd conţine o bandă cu contur simplu la temperatura T=293 K; şi două benzi la T=78 K. Banda cu maxim la 2,424 eV are structura compusă din repetări fononice ale emisiei excitonilor indirecţi.</description> </descriptions> <formats> <format>application/pdf</format> </formats> </resource>