✦ LIBER ✦

Flash photolysis of Q-particles of Cd3P2 in aqueous solution

✍ Scribed by Anton Fojtík; Jaromír Jirkovský

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 241 KB
Volume: 137
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80209-9

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✦ Synopsis

Colloidal solutions of Q-Cd3P2 of different mean particle size were flashed and the changes in optical absorption recorded. An absorption band at long wavelengths in the visible and near-infrared is attributed to surface-trapped holes. A bleaching band close to the onset of absorption is attributed to excess electrons on the particles. Both bands shift to longer wavelengths with increasing particle size. These light-induced changes have lifetimes measured in seconds. Multiple flashing leads to the formation of small amounts of Cd metal on the colloidal particles.

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