Low ligand field strength ion (I) mediated 1D inorganic material MoI3: Synthesis and application to photo-detectors

Kyung Hwan Choi, Seungbae Oh, Sudong Chae, Byung Joo Jeong, Bum Jun Kim, Jiho Jeon, Sang Hoon Lee, Sang Ok Yoon, Chaeheon Woo, Xue Dong, Asghar Ghulam, Changmo Lim, Zhixiang Liu, Cong Wang, Ali Junaid, Jae Hyun Lee, Hak Ki Yu, Jae Young Choi

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

A new type of 1D inorganic material, MoI3, which can be separated into individual 1D chains, was synthesized through a vapor transport reaction between molybdenum and iodine. High-purity and centimeter-scale large MoI3 crystals were obtained by controlling the growth temperature and the stoichiometric ratio between molybdenum and iodine. Their semiconductor characteristics were confirmed by measuring the electrical conductivity as a function of temperature (conductivity increased with increased temperature across the range −70 to 30 °C). Furthermore, it was confirmed that MoI3 with a 1.27 eV band gap can be separated to a few nanometer scale through mechanical and chemical exfoliation methods and can be used as a photodetector in the near IR (less than 1000 nm)-to-visible light region. This novel 1D material is expected to play an important role in the development of additional low-dimensional materials and in advanced nano-optoelectronic devices.

Original languageEnglish
Article number157375
JournalJournal of Alloys and Compounds
Volume853
DOIs
StatePublished - 5 Feb 2021

Keywords

  • 1D inorganic materials
  • Mechanical exfoliation
  • MoI
  • Photodetectors

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