Epitaxial Growth of an Organic p-n Heterojunction: C60 on Single-Crystal Pentacene
Epitaxial Growth of an Organic p-n Heterojunction: C60 on Single-Crystal Pentacene
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DOI：
10.1021/acsami.6b02744
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发表时间：
2016-06-01
影响因子：
9.5
通讯作者：
Ueno, Nobuo
中科院分区：
文献类型：
--
作者：
Nakayama, Yasuo;Mizuno, Yuta;Ueno, Nobuo
设计分子p-n异质结结构，即，电子给体-受体接触是进一步开发有机电子器件的主要挑战之一。在本研究中，一个定义明确的p-n异质结的两个代表性的分子半导体，并五苯和C-60，形成在并五苯的单晶表面上的生长行为和晶体结构方面进行了精确的研究。C-60在并五苯单晶的（001）表面上组装成具有特定外延取向的（111）取向面心立方晶体结构。目前的实验结果提供了分子尺度的见解有机p-n异质结的形成机制，通过准确的单晶分子接触的结构分析。
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.