journal article·2024-11-20

Photodetector Based on Elemental Ferroelectric Black Phosphorus-like Bismuth

Qiang Li, Shibo Fang, Xingyue Yang, Zongmeng Yang, Qiuhui Li, Wenjing Zhou, Dahua Ren, Xiaotian Sun, Jing Lu

ACS Applied Materials & Interfaces· Volume 16· Issue 46
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Abstract

Two-dimensional ferroelectric materials have emerged as a promising candidate for the development of next-generation photodetectors owing to their inherent photogalvanic effect (PGE) and strong light-matter interactions. Recently, the first-ever elemental-based ferroelectric material, black-phosphorus-like Bi (BP-Bi), has been successfully synthesized. In this work, we investigate the PGE of the monolayer (ML) BP-Bi by using ab initio quantum transport simulation. We find that the photocurrent of the ML BP-Bi in the ferroelectric direction (armchair) is significantly larger than that in the vertical ferroelectric direction [zigzag (ZZ)]. For example, despite the comparable optical absorption rates of BP-Bi in the armchair (ARM) and ZZ directions, the maximum photocurrent (133 mA/W) in the ARM direction is 2 orders of magnitude greater than that (4.70 mA/W) in the ZZ direction. The asymmetry is attributed to the breaking and existence of the mirror inversion symmetries along the ARM and ZZ directions, respectively. Our work paves the way for the research of the low-dimensional ferroelectric photodetector.
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Research context

OpenAlex topics: Acoustic Wave Resonator Technologies · 2D Materials and Applications · Photonic and Optical Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, Hubei Minzu University, Enshi 445000, P. R. China

State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, P. R. China

Department of Statistics, University of Michigan, Ann Arbor, Michigan 48109, United States

College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function- Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, P. R. China

Collaborative Innovation Center of Quantum Matter, Beijing 100871, P. R. China

Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL-MEMD), Peking University, Beijing 100871, P. R. China

Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, P. R. China

Key Laboratory for the Physics and Chemistry of Nanodevices, Peking University, Beijing 100871, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Hubei Province · Hubei Provincial Department of Education · National Natural Science Foundation of China

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