Morphology and crystallographic properties of rubrene thin films grown on muscovite(0 0 1)
详细信息 查看全文
- 作者：T. Djuric ; A. Thierry ; W. Grogger ; Sh.M. Abd Al-Baqi ; H. Sitter ; R. Resel
- 关键词：Rubrene ; Thin film ; Organic semiconductors ; TEM
- 刊名：Physica E
- 出版年：2009
- 出版时间：September 2009
- 年：2009
- 卷：41
- 期：9
- 页码：1718-1722
- 全文大小：494 K
文摘
Thin films of the organic semiconductor rubrene were deposited on muscovite (0 0 1) substrates by hot wall epitaxy. The morphology of rubrene thin films in combination with their crystallographic properties was characterized by transmission electron microscopy. The initial growth proceeds in a partially wetting regime where amorphous droplets are formed. Through diffusive interactions the droplets merge together in partially crystalline open networks. At a more advanced growth stage, spherulites are formed and a variety of crystalline morphologies appears. Platelet- and needle-like morphologies can be assigned to the orthorhombic phase of rubrene with the [3 0 1] and [1 1 0] zone axes, respectively.