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Titolo:
CORRELATION BETWEEN STRUCTURAL AND OPTICAL-PROPERTIES OF PBS NANOCRYSTALS
Autore:
RICOLLEAU C; GANDAIS M; GACOIN T; BOILOT JP;
Indirizzi:
UNIV PARIS 06,LAB MINERAL & CRISTALLOG,UA CNRS 009,CASE 115,4 PL JUSSIEU F-75252 PARIS 05 FRANCE UNIV PARIS 07,LAB MINERAL & CRISTALLOG,UA CNRS 009 F-75252 PARIS 05 FRANCE ECOLE POLYTECH,PHYS MAT CONDENSEE LAB,GRP CHIM SOLIDE F-91128 PALAISEAU FRANCE
Titolo Testata:
Journal of crystal growth
fascicolo: 1-4, volume: 166, anno: 1996,
pagine: 769 - 773
SICI:
0022-0248(1996)166:1-4<769:CBSAOO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMICONDUCTOR-DOPED GLASSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
C. Ricolleau et al., "CORRELATION BETWEEN STRUCTURAL AND OPTICAL-PROPERTIES OF PBS NANOCRYSTALS", Journal of crystal growth, 166(1-4), 1996, pp. 769-773

Abstract

PbS semiconductor nanocrystals have been synthesized in order to study the modifications of their optical properties in relation to their size. The synthesis has been carried out by using the techniques of colloid chemistry. A fast evolution of the optical absorption spectrum has been noticed following synthesis. immediately after the synthesis reaction, the samples exhibit a structured absorption spectrum with three well-defined excitonic peaks. Within a few minutes, the peaks progressively disappear and a structureless spectrum occurs. A procedure of stabilization of the colloids has been set up in order to allow the study of the structural and optical properties at different stages of their evolution. Fiber-like nanocrystals (2.5 x 25 nm) and platelets have been found in the early stages of the synthesis and nearly cubic nanocrystals (13 nm) are found in later stages of evolution.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 21:08:12