Structure transition of a C(60) monolayer on the Bi(111) surface.
Structure transition of a C(60) monolayer on the Bi(111) surface.
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Bi(111)表面C-60单层的结构转变
DOI:
10.1039/d1ra00900a
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发表时间:
2021-04-13
期刊:
影响因子:
3.9
通讯作者:
Wang JZ
中科院分区:
文献类型:
--
作者:
Wang YR;Tao ML;Chao-Ke M;Wang ZL;Yang DX;Shi MX;Sun K;Yang JY;Wang JZ
The interfacial structures of C60 molecules adsorbed on solid surfaces are essential for a wide range of scientific and technological processes in carbon-based nanodevices. Here, we report structural transitions of the C60 monolayer on the Bi(111) surface studied via low-temperature scanning tunneling microscopy (STM). With an increase in temperature, the structure of the C60 monolayer transforms from local-order structures to a (√93 × √93) R20° superstructure, and then to a (11 × 11) R0° superstructure. Moreover, the individual C60 molecules in different superstructures have different orientations. C60 molecules adopt the 6 : 6 C–C bond and 5 : 6 C–C bond facing-up, mixed orientations, and hexagon facing-up in the local-order structure, (√93 × √93) R20°, and (11 × 11) R0° superstructure, respectively. These results shed important light on the growth mechanism of C60 molecules on solid surfaces. With the increase in temperature, the structure of the C60 monolayer on the Bi(111) substrate transforms from local-order structures to a (√93 × √93) R20° superstructure, and then to a (11 × 11) R0° superstructure.
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