期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 21, 页码 13499-13505出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b02744
关键词
grazing-incidence X-ray diffraction; X-ray reflectivity; synchrotron radiation; organic semiconductor; fullerene; organic electronics; solar cell; van der Waals epitaxy
资金
- KAKENHI of the Japan Society for the Promotion of Science (JSPS) [15H05498, 25288114, 25870034]
- JGC-S Scholarship Foundation
- Izumi Science and Technology Foundation
- G-COE/TA-KUETSU Programs of Chiba University [MEXT] [G-3]
- Tokyo University of Science
- Casio Science Promotion Foundation
- Helmholtz Energy Alliance Hybrid Photovoltaics
- Deutsche Forschungsgemeinschaft (DFG)
- Grants-in-Aid for Scientific Research [15H05498, 25870034] Funding Source: KAKEN
Designing molecular p-n heterojunction structures, i.e., electron donor-acceptor contacts, is one of the central challenges for further development of organic electronic devices. In the present study, a well-defined p-n heterojunction of two representative molecular semiconductors, pentacene and C-60, formed on the single-crystal surface of pentacene is precisely investigated in terms of its growth behavior and crystallographic structure. C-60 assembles into a (111)-oriented face-centered-cubic crystal structure with a specific epitaxial orientation on the (001) surface of the pentacene single crystal. The present experimental findings provide molecular scale insights into the formation mechanisms of the organic p-n heterojunction through an accurate structural analysis of the single-crystalline molecular contact.
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