Influence of hydrogenation of defects at the microcrystallite(MC)-glass interface on the nonlinear optics of CdSe-MC's

✍ Scribed by J. Kolenda; U. Woggon; M. Müller; I. Rückmann; M. Petrauskas; J. Kornack

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 343 KB
• Volume: 9
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1016/0749-6036(91)90254-o

✦ Synopsis

Using frequency doubled 35 pa pulses of a YAQ laser to excite resonantly CdSe-NC's (R = 1.6 nm) embedded in glass, the absorption saturation and its kinetics are investigated at room temperature. A passivation of the NC-glass interface is realieed by a hydrogen treatment of one sample. In the hydrogenated sample a larger switching factor between the two transmission levels and a slower relaxation are observed supporting the assumption of carrier transfer into the glass matrix advanced by surface states.