University of Electronic Science and Technology of China

Liping Dai

Yang Wang

Jie Xiong

Miao Zhang

Yanrong Li

Gaofeng Rao

Jianwen Huang

Xinrui Chen

Chujun Yin

Yuqing Liu

Chunyang Wu

Chaoyi Yan

Xianfu Wang

Chuanhui Gong

Junwei Chu

Wanli Zhang

A method for preparing an ultrathin two-dimensional (2D) monocrystalline nanosheet, the method including: 1) placing BiXpowder where X=I, Br, or Cl in a crucible, and putting the crucible on a first heating zone of a furnace disposed at a gas inlet of a quartz tube; placing substrates covered with metal sheets on a second heating zone of the furnace disposed at a gas outlet of the quartz tube; 2) vacuumizing the quartz tube; pumping Ar gas into the quartz tube until the air pressure is 101.325 kPa; pumping a carrier gas into the quartz tube; and 3) heating and maintaining the second heating zone; heating the first heating zone for BiXevaporation until producing chemical reaction between BiXand the metal sheets, and preparing ultrathin 2D nanosheets on the substrates simultaneously; and cooling the substrate naturally to 15-30&#xb0; C.

Method for preparing ultrathin two-dimensional nanosheets and applications thereof

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Chengdu, China

Liping Dai