Self-assembled growth of C${}_{60}$ monomolecular layers at the atomic sandwich consisting of Tl-covered single-layer NiSi${}_2$ on Si(111) has been studied as a function of the density of the Tl atomic layer. It has been found that C${}_{60}$ fullerenes form hexagonal close-packed arrays. Within a C${}_{60}$ layer, fullerenes can form together with Tl atoms three distinct configurations which are reflected by difference of the C${}_{60}$ brightness, labelled as dim, normal and bright, in the scanning tunneling microscopy images. It has been elucidated that the bright fullerenes reside atop a completed Tl monolayer, in the case of the normal fullerenes one Tl atom directly beneath the given fullerene is missing, and under the dim fullerenes no Tl atoms are left. Using Tl deposition, it is possible to change the relative fractions of the dim, normal and bright fullerenes, in particular to fabricate the homogeneous C${}_{60}$ layers consisting exclusively of the fullerenes of a single type, normal or bright, depending on the desire.

C的自组装生长${}_{60}$ 由 Tl 覆盖的单层 NiSi 组成的原子夹层中的单分子层${}_2$已经研究了 Si(111) 上作为 Tl 原子层密度的函数。已经发现，C${}_{60}$富勒烯形成六方密排阵列。在一个 C${}_{60}$ 层，富勒烯可以与 Tl 原子一起形成三种不同的配置，这由 C 的差异反映出来${}_{60}$扫描隧道显微镜图像中的亮度，标记为暗淡、正常和明亮。已经阐明，明亮的富勒烯位于完整的 Tl 单层的顶部，在正常富勒烯的情况下，给定富勒烯正下方的一个 Tl 原子缺失，而在暗的富勒烯下没有 Tl 原子留下。使用 Tl 沉积，可以改变暗富勒烯、正常富勒烯和亮富勒烯的相对分数，特别是制造均匀的 C${}_{60}$ 层完全由单一类型的富勒烯组成，正常或明亮，取决于需要。