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Suppression of extra carriers for enhanced intrinsic piezoelectric properties of ultrathin MoS2 through various metal dopants
- Han, Sang A;
- Moon, Janghyuk;
- Yum, Han-Yup;
- Park, Min-Sik;
- Kim, Sang-Woo;
- 외 1명
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8초록
We study the piezoelectric behavior of metal-doped monolayer MoS2. Its three-dimensional charge density, work function (WF), and piezoresponse with various metal dopants are theoretically predicted based on density functional theory, and the real-time piezoelectric power of these samples is experimentally verified. Selected p-type metal dopants (Au, Ag, Pd, Pt, and Al) increase the WF of monolayer MoS2, affecting electron emission from the MoS2 surface. The reason is that p-type metal dopants suppress excess electrons and prevent screening effects. A nanogenerator constructed from Au-doped monolayer MoS2 has been used to explore the possibility of a practical device. © 2022
키워드
Density functional theory; Metal doping; Molybdenum disulfide; Piezoelectric; PHOSPHORUS-DOPED MOS2; MONOLAYER MOS2; LAYER MOS2
- 제목
- Suppression of extra carriers for enhanced intrinsic piezoelectric properties of ultrathin MoS2 through various metal dopants
- 저자
- Han, Sang A; Moon, Janghyuk; Yum, Han-Yup; Park, Min-Sik; Kim, Sang-Woo; Kim, Jung Ho
- 발행일
- 2022-11
- 유형
- Article
- 권
- 246