Laser induced darkening in CdTe quantum dots without traps

The irreversible laser induced darkening effect found in semiconductor doped glasses or glass based quantum dots is one of the barriers to the practical application of these materials in fast optical switching and nonlinear optical devices. Laser induced darkening causes the decrease of emission int...

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Veröffentlicht in:	Journal of materials science letters 1996-05, Vol.15 (10), p.892-894
Hauptverfasser:	LIU, Y, REYNOSO, V. C. S, ROJAS, R. F. C, BRITO CRUZ, C. H, CESAR, C. L, FRAGNITO, H. L, ALVES, O. L, BARBOSA, L. C
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Iii-v semiconductors Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Physics
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Beschreibung
Zusammenfassung:	The irreversible laser induced darkening effect found in semiconductor doped glasses or glass based quantum dots is one of the barriers to the practical application of these materials in fast optical switching and nonlinear optical devices. Laser induced darkening causes the decrease of emission intensity and four-wave mixing signal and the increase of nonlinear response time. The irreversible laser induced darkening effect in trap free samples of CdTe quantum dots in borosilicate glass was characterized using photoluminescence spectroscopy.
ISSN:	0261-8028 1573-4811
DOI:	10.1007/BF00592721