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Title: Two-dimensional inorganic molecular crystals

Journal Article · · Nature Communications
 [1];  [2];  [1];  [1];  [1];  [1];  [1]; ORCiD logo [3];  [2]; ORCiD logo [4]; ORCiD logo [1]
  1. Huazhong Univ. of Science and Technology (HUST), Wuhan (China). State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering
  2. Shenzhen Univ., Guangdong (China). Shenzhen Key Lab. of Flexible Memory Materials and Devices, College of Electronic Science and Technology
  3. Huazhong Univ. of Science and Technology (HUST), Wuhan (China). State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering; Stanford Univ., Stanford, CA (United States). Dept. of Material Science and Engineering
  4. Stanford Univ., Stanford, CA (United States). Dept. of Material Science and Engineering

Two-dimensional molecular crystals, consisting of zero-dimensional molecules, are very appealing due to their novel physical properties. However, they are mostly limited to organic molecules. The synthesis of inorganic version of two-dimensional molecular crystals is still a challenge due to the difficulties in controlling the crystal phase and growth plane. Here, we design a passivator-assisted vapor deposition method for the growth of two-dimensional Sb2O3 inorganic molecular crystals as thin as monolayer. The passivator can prevent the heterophase nucleation and suppress the growth of low-energy planes, and enable the molecule-by-molecule lateral growth along high-energy planes. Using Raman spectroscopy and in situ transmission electron microscopy, we show that the insulating α-phase of Sb2O3 flakes can be transformed into semiconducting β-phase under heat and electron-beam irradiation. Our findings can be extended to the controlled growth of other two-dimensional inorganic molecular crystals and open up opportunities for potential molecular electronic devices.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1575222
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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