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
收藏
页码：30 / 35
页数：6
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