OPTICAL-TRANSITIONS OF C-60 FILMS IN THE VISIBLE AND ULTRAVIOLET FROM SPECTROSCOPIC ELLIPSOMETRY

被引：113

作者：

KELLY, MK ^{[1
]}

ETCHEGOIN, P ^{[1
]}

FUCHS, D ^{[1
]}

KRATSCHMER, W ^{[1
]}

FOSTIROPOULOS, K ^{[1
]}

机构：

[1] MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.46.4963

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical spectra for C60 films, obtained by ellipsometry, are reported for the energy range from 1.9 to 9.5 eV. Our results are compared with related results from other optical techniques as well as photoemission results. Strong similarity to absorption measurements of dissolved C60 results from the strong molecular character of the solid films. We fit our spectra with Lorentzian line shapes to determine energy positions and shapes of the transitions. We observe the onset of optical absorption near 1.9 eV. We also report initial results from alkali-metal doping and a useful method for incorporating K into the bulk of film samples.

引用

页码：4963 / 4968

页数：6

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