Transformation of the Optical Extinction Spectrum of KI Film Due to Surface Scattering

Keiichi Edamatsu; Noriyo Kidera; Masamitsu Hirai

doi:10.1143/JPSJ.59.326

Transformation of the Optical Extinction Spectrum of KI Film Due to Surface Scattering

Keiichi Edamatsu, Noriyo Kidera, Masamitsu Hirai

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The transformation of optical extinction spectra of potassium iodine (KI) films has been investigated under the influence of moisture. When the film is kept in humid air, its fundamental excitonic absorption band appears to shift to the lower-energy side by more than 1 eV. No crystallographic or chemical change is related to the transformation of the optical extinction spectra. On the other hand, scanning electron microscopy revealed the production of an island structure at the film surface in humid air. Application of Mie's scattering theory to such an island structure well explained the variation of the optical extinction spectra. No quantum size effect on the excitonic absorption was observed in KI film thicker than 10 nm.

Original language	English
Pages (from-to)	326-330
Number of pages	5
Journal	journal of the physical society of japan
Volume	59
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.59.326
Publication status	Published - 1990 Jan 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Transformation of the Optical Extinction Spectrum of KI Film Due to Surface Scattering",

abstract = "The transformation of optical extinction spectra of potassium iodine (KI) films has been investigated under the influence of moisture. When the film is kept in humid air, its fundamental excitonic absorption band appears to shift to the lower-energy side by more than 1 eV. No crystallographic or chemical change is related to the transformation of the optical extinction spectra. On the other hand, scanning electron microscopy revealed the production of an island structure at the film surface in humid air. Application of Mie's scattering theory to such an island structure well explained the variation of the optical extinction spectra. No quantum size effect on the excitonic absorption was observed in KI film thicker than 10 nm.",

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AU - Hirai, Masamitsu

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Y1 - 1990/1/1

N2 - The transformation of optical extinction spectra of potassium iodine (KI) films has been investigated under the influence of moisture. When the film is kept in humid air, its fundamental excitonic absorption band appears to shift to the lower-energy side by more than 1 eV. No crystallographic or chemical change is related to the transformation of the optical extinction spectra. On the other hand, scanning electron microscopy revealed the production of an island structure at the film surface in humid air. Application of Mie's scattering theory to such an island structure well explained the variation of the optical extinction spectra. No quantum size effect on the excitonic absorption was observed in KI film thicker than 10 nm.

AB - The transformation of optical extinction spectra of potassium iodine (KI) films has been investigated under the influence of moisture. When the film is kept in humid air, its fundamental excitonic absorption band appears to shift to the lower-energy side by more than 1 eV. No crystallographic or chemical change is related to the transformation of the optical extinction spectra. On the other hand, scanning electron microscopy revealed the production of an island structure at the film surface in humid air. Application of Mie's scattering theory to such an island structure well explained the variation of the optical extinction spectra. No quantum size effect on the excitonic absorption was observed in KI film thicker than 10 nm.

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Transformation of the Optical Extinction Spectrum of KI Film Due to Surface Scattering

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