THICKNESS DEPENDENCE OF THE EPITAXIAL STRUCTURE OF VANADYL PHTHALOCYANINE FILM

被引：32

作者：

HOSHI, H ^{[1
]}

HAMAMOTO, K ^{[1
]}

YAMADA, T ^{[1
]}

ISHIKAWA, K ^{[1
]}

TAKEZOE, H ^{[1
]}

FUKUDA, A ^{[1
]}

FANG, SL ^{[1
]}

KOHAMA, K ^{[1
]}

MARUYAMA, Y ^{[1
]}

机构：

[1] INST MOLEC SCI, OKAZAKI, AICHI 444, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1994年 / 33卷 / 11A期

关键词：

PHTHALOCYANINE; VANADYL PHTHALOCYANINE; SPECTROSCOPIC PROPERTIES; 2ND-HARMONIC GENERATION; MOLECULAR BEAM EPITAXY; SHG MBE;

D O I：

10.1143/JJAP.33.L1555

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the thickness dependence of the crystal structure in vanadyl phthalocyanine (VOPc) films epitaxially grown on KBr(100) surface. Optical second-harmonic generation observed in oblique incidence increases nearly quadratically with film thickness up to at least 64 nm and saturates, indicating a structural change from an epitaxial polar VO orientation to a nonpolar bulk crystal structure. The latter was assigned to monoclinic structure based on X-ray diffraction. Optical absorption spectra in visible and infrared regions and scanning electron microscopy also show the structural difference between the films thicker and thinner than about 80 nm.

引用

页码：L1555 / L1558

页数：4

共 14 条

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