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Temperature-assisted morphological transition in CuPc thin films

Title
Temperature-assisted morphological transition in CuPc thin films
Authors
Bae, Yu JeongThi Kim Hang PhamKim, Tae Hee
Ewha Authors
김태희
SCOPUS Author ID
김태희scopus
Issue Date
2016
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN
0374-4884JCR Link1976-8524JCR Link
Citation
vol. 68, no. 10, pp. 1206 - 1210
Keywords
Morphological transitionOrganic semiconductor thin filmTemperature treatmentCu-phalocyanine
Publisher
KOREAN PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
Ex-situ and in-situ morphological analyses were performed for Cu-phthalocyanine (CuPc) organic semiconductor films by using atomic force microscopy (AFM) and reflection high-energy electron diffraction (RHEED). The focus was the effects of post-annealing on the structural characteristics of CuPc films grown on MgO(001) layers by using an ultra-high-vacuum thermal evaporator. Sphere-to-nanofibril and 2-D to 3-D morphological transitions were observed with increasing CuPc thickness beyond 3 nm. The surface morphology and the crystallinity were drastically improved after an additional cooling of the post-annealed CuPc films thinner than 3 nm. Our results highlight that molecular orientation and structural ordering can be effectively controlled by using different temperature treatments and a proper combination of material, film thickness, and substrate.
DOI
10.3938/jkps.68.1206
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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