Composition control of CdSeTe layers grown by molecular beam epitaxy

Autor:	Nobuo Matsumura, Takuya Sakamoto, Junji Saraie
Rok vydání:	2002
Předmět:	Inorganic Chemistry Chemistry Stereochemistry Materials Chemistry Analytical chemistry Heterojunction Composition (visual arts) Thin film Condensed Matter Physics Chemical composition Standard enthalpy of formation Molecular beam epitaxy
Zdroj:	Journal of Crystal Growth. :1550-1553
ISSN:	0022-0248
Popis:	CdSeTe layers were grown on GaAs(1 0 0) substrates by molecular beam epitaxy. The beam-intensity ratios of Se to Te atoms were changed to control the composition of the CdSeTe mixed crystals. The Te atoms were more readily incorporated into the epilayers than the Se atoms under the competition for incorporation of Se and Te atoms. The J VI / J II beam-intensity ratio dependence of the Se composition was studied. The Se composition increased with decrease in J VI / J II ratio. At a J VI / J II ratio of 0.05 the beam-intensity ratio of Se to Se+Te coincided with the Se composition. This result indicates that the Se and Te atoms are incorporated without competition on the Cd stabilized surface. We considered the behavior of physisorbed atoms and the heat of formation of the compounds and discussed the situation of the growing surface of the CdSeTe epilayers, comparing it with the reported results of ZnSeTe epilayers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b61eea8bf9642438fff9ed80c2aba25a https://doi.org/10.1016/s0022-0248(01)02366-1 Zobrazit plný text záznamu Full Text from ScienceDirect