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Updated: Jan 31, 2026
13:56
Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
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Two-Dimensional PC6 with Direct Band Gap and Anisotropic Carrier Mobility
Tong Yu1, Ziyuan Zhao1, Yuanhui Sun2
1Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education , Northeast Normal University , Changchun 130024 , China.
Journal of the American Chemical Society
|January 5, 2019
Summary
Researchers discovered a new 2D material, PC6, a semiconductor with high conductivity and broad light absorption. This graphene-like material shows promise for advanced electronic and photovoltaic devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Computational Chemistry
Background:
- Graphene and phosphorene are key 2D materials, but graphene's zero band gap and phosphorene's instability limit applications.
- Atomically thin materials offer unique electronic and optical properties.
Purpose of the Study:
- To identify novel 2D materials with desirable properties beyond graphene and phosphorene.
- To explore the potential of a new buckled graphene-like PC6 monolayer.
Main Methods:
- First-principle unbiased structure search calculations were employed.
- Density Functional Theory (DFT) based methods were utilized for property evaluation.
Main Results:
- A novel buckled graphene-like PC6 monolayer was identified.
- PC6 exhibits a direct band gap of 0.84 eV, high anisotropic conductivity (electron mobility 2.94 × 105 cm2 V-1 s-1, hole mobility 1.64 × 105 cm2 V-1 s-1).
- PC6 demonstrates a high absorption coefficient (105 cm-1) across a broad spectrum (300–2000 nm) and maintains its direct band gap under 5% biaxial strain.
Conclusions:
- The predicted PC6 monolayer possesses excellent electronic and optical properties.
- PC6 is a promising candidate for next-generation electronic and photovoltaic devices.
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