Electrons in shallow traps at 77 K

Moan, Johan Emelian; Høvik, B.

doi:10.1016/0009-2614(75)85702-2

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…in addition to the infrared electron. This is analogous to the 'red wing' found in pulse-radiolysis (23,25). The decay of the 'red wing' is linear over five decades of time when the absorbance is plotted against log (time) as in Fig.…”

Section: Time-resolved Bleachingsupporting

confidence: 59%

Partial deconvolution of the absorption spectrum of trapped electrons in 15 M LiCl aqueous glasses at 77 K

Nguyen¹

1979

Can. J. Chem.

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TUAN QUOC NGUYEN. Can. J. Chem. 57, 1758Chem. 57, (1979. Evidence is presented for the composite nature of the solvated (or trapped) electron absorption band in LiCl aqueous glass at 77 K. It is shown that the overall visible absorption spectrum can be deconvoluted into a homogeneously-bleachable 'green' band and a heterogeneously-bleachable 'red' band, whose relative magnitude and absorption band-maxima change with the concentration of electrolyte. From the combined results of time-resolved and steady-state photobleaching experiments, it is concluded that at least two unstable bands are formed during photobleaching (with smaller lifetimes for the band lying further towards the infrared) which then reconverted into the 'green' band with over 40% efficiency.TUAN QUOC NGUYEN. Can. J. Chem. 57, 1758Chem. 57, (1979. Les resultats montrent que le spectre d'absorption de l'electron solvate (ou piege) dans les verres aqueux contenant du LiCl a 77 K est la resultante de plusieurs bandes d'absorption distinctes. Par photoblanchiment fractionnt, il a ete possible de dCconvolutionner partiellement cette bande d'absorption en deux composants: une bande "verte" qui se comporte de maniere homogene sous photoblanchiment, et une bande "rouge" non-homogene. Le rapport des intensites et la position de chacun des deux pics d'absorption changent avec la concentration en electrolyte. Les resultats obtenus par photoblanchiment rCsolu dans le temps et ceux par photoblanchiment stationnaire ont permis de conclure qu'au moins deux bandes instables sont ainsi formees par photoblanchiment (avec une duree de vie d'autant plus courte que leur absorption se trouve loin dans l'infrarouge), qui se retransforment ensuite en bande "verte" avec un rendement superieur a 40%.

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Section: Time-resolved Bleachingsupporting

confidence: 59%