National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan.
Adv Mater. 2014 May;26(18):2857-61. doi: 10.1002/adma.201304985. Epub 2014 Feb 22.
Single-layered MoS2 doped with Re (n-type) and Au (p-type) are investigated by in situ scanning transmission electron microscopy. Re atoms substituting Mo sites enhance the local chemical affinity, evidenced by agglomeration of other dopant/impurity atoms. Au atoms exist as adatoms and show larger mobility under the electron beam. These behaviors are consistent with density functional theory calculations.
采用原位扫描透射电子显微镜研究了单层 MoS2 掺杂 Re（n 型）和 Au（p 型）。Re 原子取代 Mo 位增强了局部化学亲和力，这表现为其他掺杂/杂质原子的聚集。Au 原子以吸附原子的形式存在，在电子束下表现出更大的迁移率。这些行为与密度泛函理论计算一致。
