Abstract We investigated, by scanning tunneling microscope, self-organization of bimolecular layers composed of 0.3 ML cobalt-phthalocyanine (CoPc) with various amount of hexadecafluoro copper phthalocyanine (F16CuPc) adsorbed on Ag(100) surface kept at room temperature. The coexistence of ordered bimolecular ( 5 2 5 2 ) R 45 ∘ chessboard-like phase with 2D bimolecular gas phase is observed for the total molecular coverage equal to 0.4 ML and 0.7 ML. A monomolecular ( 29 29 ) R 22 ∘ F16CuPc, the bimolecular chessboard-like and a 2D bimolecular gas phases are found for the total molecular coverage of 0.9 ML. Density of 2D bimolecular gas phase increases with increasing amount of F16CuPc deposited on the surface until the critical coverage for F16CuPc is reached, what triggers appearance of monomolecular ( 29 29 ) R 22 ∘ F16CuPc phase. Completing the monolayer by adding 0.1 ML of F16CuPcs results in coexistence of the bimolecular chessboard-like structure with the pure monomolecular F16CuPc domains. The non-equal molecular deposition ratios induce various point defects in the bimolecular ordered structure. Termination of bimolecular ordered phase parallel to the direction indicates the dominant component in the mixture deposited on the surface.

中文翻译：

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在 Ag(100) 上具有不等成分的 CoPc-F16CuPc 混合物的自组织：从亚单层到单层覆盖

摘要 我们通过扫描隧道显微镜研究了由 0.3 ML 钴酞菁 (CoPc) 和吸附在室温下的 Ag(100) 表面上的不同量的十六氟铜酞菁 (F16CuPc) 组成的双分子层的自组织。对于等于 0.4 ML 和 0.7 ML 的总分子覆盖率，观察到有序双分子 ( 5 2 5 2 ) R 45 ∘ 棋盘状相与二维双分子气相共存。发现单分子 ( 29 29 ) R 22 ∘ F16CuPc、双分子棋盘状和二维双分子气相，总分子覆盖率为 0.9 ML。二维双分子气相的密度随着沉积在表面上的 F16CuPc 量的增加而增加，直到达到 F16CuPc 的临界覆盖率，这触发了单分子 ( 29 29 ) R 22 ∘ F16CuPc 相的出现。通过添加 0.1 ML F16CuPcs 完成单层导致双分子棋盘状结构与纯单分子 F16CuPc 域共存。不等的分子沉积比率在双分子有序结构中引起各种点缺陷。平行于方向的双分子有序相的终止表明沉积在表面上的混合物中的主要成分。