Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 46,
  • Issue 2,
  • pp. 354-356
  • (1992)

First Observation of the Urbach Tail in a Multicomponent Organic System

Not Accessible

Your library or personal account may give you access

Abstract

The exponential attenuation of electronic absorption in spectral regions removed from the absorption maxima, the "Urbach tail," has been observed in a variety of materials and has been ascribed to thermal and structural disorder. Here, we report, to our knowledge, the first observation of the Urbach tail in a multicomponent organic system (the asphaltenes) which is due, in part, to the overlapping absorption spectra of the diverse component chromophores within the tail spectral region. The distribution of chromophores produces an unusually large, nonthermal width in the Urbach tail.

PDF Article
More Like This
Analytic optical-constant model derived from Tauc-Lorentz and Urbach tail

Luis V. Rodríguez-de Marcos and Juan I. Larruquert
Opt. Express 24(25) 28561-28572 (2016)

Structural design of multicomponent lens systems

Lakshminarayan Hazra
Appl. Opt. 23(23) 4440-4443 (1984)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved