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Titolo:
INFLUENCE OF GROWTH-CONDITIONS ON THE STRUCTURAL-PROPERTIES OF CDSXSE1-X (X=0.4 AND X=1) NANOCRYSTALS
Autore:
RICOLLEAU C; AUDINET L; GANDAIS M; GACOIN T; BOILOT JP; CHAMARRO M;
Indirizzi:
UNIV PARIS 06,CNRS,URA 009,LAB MINERAL CRISTALLOG,J PL JUSSIEU F-75252 PARIS 05 FRANCE UNIV PARIS 07,CNRS,URA 009,LAB MINERAL CRISTALLOG F-75252 PARIS 05 FRANCE ECOLE POLYTECH,PHYS MAT CONDENSEE LAB,GRP CHIM SOLIDE F-91128 PALAISEAU FRANCE UNIV PARIS 07,CNRS,URA 017,PHYS SOLIDES GRP F-75251 PARIS 05 FRANCE
Titolo Testata:
Journal of crystal growth
fascicolo: 1-4, volume: 159, anno: 1996,
pagine: 861 - 866
SICI:
0022-0248(1996)159:1-4<861:IOGOTS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSMISSION ELECTRON-MICROSCOPY; GLASS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
C. Ricolleau et al., "INFLUENCE OF GROWTH-CONDITIONS ON THE STRUCTURAL-PROPERTIES OF CDSXSE1-X (X=0.4 AND X=1) NANOCRYSTALS", Journal of crystal growth, 159(1-4), 1996, pp. 861-866

Abstract

The structural properties of CdSxSe1-x nanocrystals elaborated by twodifferent methods have been studied by means of high resolution transmission electron microscopy and optical absorption. In the first method, CdS0.4Se0.6 nanocrystals are grown in glass matrix and show a size distribution characterized by a standard deviation sigma nearly proportional to the nanocrystals mean diameter d, the value sigma/d being about 0.25. They are crystallized in the stable structure of wurtzite-type from the beginning of growth. Their morphology depends on the size:it changes from sphere to hexagonal prism as the size increases. In the second method CdS nanocrystals are grown in solution and show narrower size distribution; the ratio sigma/d is about 0.15. The structure depends on the nanocrystal size: the blende-type structure is dominantat small diameter (d = 3 nm) and the wurtzite-type structure is more important at larger diameter (d > 5 nm). Their morphology also changesfrom quasi-sphere at small size (< 4 nm) to polyhedron-like at largersize.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 15:43:15