Effects of Annealing on the Mechanical Properties of Pentacene and Tris(8-hydroxyquinoline) Aluminum Films

被引：1

作者：

Kanari, Moriyasu ^{[1
]}

Kunimoto, Makoto ^{[1
]}

Ihara, Ikuo ^{[2
]}

Wakamatsu, Takashi ^{[1
]}

机构：

[1] Ibaraki Natl Coll Technol, Hitachinaka, Ibaraki 3128508, Japan

[2] Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata 94021, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2014年 / 599卷 / 01期

基金：

日本学术振兴会;

关键词：

mechanical property; annealing; morphology; nanoindentation; grain growth; organic semiconducting film; THIN-FILMS; TRANSISTORS;

D O I：

10.1080/15421406.2014.935916

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Annealing is reported as an effective process to improve electrical properties of organic semiconducting films. The mechanical properties of pentacene and tris(8-hydroxyquinoline) aluminum (Alq(3)) films annealed at 140 degrees C were investigated in this study by nanoindentation testing. AFM observations of as-coated and annealed pentacene films indicate grain growth from 160 to 258nm. The annealing process decreases pentacene and Alq(3) film hardness by 23 and 36% from those of the as-coated films, 0.643 and 0.523 GPa. Grain growth and decreasing hardness are attributed to thermal diffusion and recrystallization of molecules.

引用

页码：30 / 35

页数：6

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