Cited 21 time in webofscience Cited 22 time in scopus

Realizing Long-Term Stability and Thickness Control of Black Phosphorus by Ambient Thermal Treatment

Title
Realizing Long-Term Stability and Thickness Control of Black Phosphorus by Ambient Thermal Treatment
Authors
Jeong, Min-HyeKwak, Do-HyunRa, Hyun-SooLee, A-YoungLee, Jong-Soo
DGIST Authors
Lee, Jong-Soo
Issue Date
2018-06
Citation
ACS Applied Materials and Interfaces, 10(22), 19069-19075
Type
Article
Article Type
Article
Keywords
black phosphorusfield-effect transistorthermal etching thickness controlair stabilityFIELD-EFFECT TRANSISTORSTRANSPORT-PROPERTIESMOS2AIRGRAPHENEPHOTODETECTORSSEMICONDUCTORDEGRADATIONPASSIVATIONELECTRONICS
ISSN
1944-8244
Abstract
Few-layer black phosphorus (BP) has shown great potential for next-generation electronics with tunable band gap and high carrier mobility. For the electronic applications, the thickness modulation of a BP flake is essential due to its thickness-dependent electronic properties. However, controlling the precise thickness of few-layer BP is a challenge for the high-performance device applications. In this study, we demonstrate that thermal treatment under ambient condition precisely controls the thickness of BP flake. The thermal etching method utilizes the chemical reactivity of BP surface with oxygen and water molecules by the repeated formation and evaporation of phosphoric acid during thermal annealing. Field-effect transistor of the thickness-modulated BP sheet by thermal etching method shows a high hole mobility of ∼576 cm2 V-1 s-1 and a high on-off ratio of ∼105. The stability of the BP devices remained for 1 month under ambient condition without an additional protecting layer, resulting from the preservation of active BP layers below native surface phosphorus oxide. © 2018 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/6668
DOI
10.1021/acsami.8b04627
Publisher
American Chemical Society
Related Researcher
  • Author Lee, Jong-Soo MNEDL(Multifunctional Nanomaterials & Energy Devices Lab)
  • Research Interests Design of new type of multifunctional nanoparticles for energy-related devices; 다기능성 나노재료; 무기물 태양전지; 열전소자
Files:
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Collection:
Department of Energy Science and EngineeringMNEDL(Multifunctional Nanomaterials & Energy Devices Lab)1. Journal Articles


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