Suppression of extra carriers for enhanced intrinsic piezoelectric properties of ultrathin MoS2 through various metal dopants

被引：5

作者：

Han, Sang ^{[1
,2
]}

Moon, Janghyuk ^{[3
]}

Yum, Han-Yup ^{[1
,2
]}

Park, Min-Sik ^{[1
,4
]}

Kim, Sang-Woo ^{[2
,5
,6
]}

Kim, Jung Ho ^{[1
,2
]}

机构：

[1] Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Squires Way, North Wollongong, NSW 2500, Australia

[2] Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea

[3] Chung Ang Univ, Sch Energy Syst Engn, 84 Heukseok Ro, Seoul 06974, South Korea

[4] Kyung Hee Univ, Integrated Educ Inst Frontier Sci Technol BK21 Fo, Dept Adv Mat Engn Informat & Elect, 1732 Deogyeong Daero, Yongin 17104, South Korea

[5] Sungkyunkwan Univ SKKU, SKKU Adv Inst Nanotechnol SAINT, Suwon 16419, South Korea

[6] Sungkyunkwan Univ SKKU, Samsung Adv Inst Hlth Sci & Technol SAIHST, Suwon 16419, South Korea

来源：

COMPOSITES PART B-ENGINEERING | 2022年 / 246卷

基金：

新加坡国家研究基金会;

关键词：

Piezoelectric; Molybdenum disulfide; Metal doping; Density functional theory; PHOSPHORUS-DOPED MOS2; MONOLAYER MOS2; LAYER MOS2;

D O I：

10.1016/j.compositesb.2022.110205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：6

共 45 条

[21] Two-Dimensional Piezoelectric MoS2-Modulated Nanogenerator and Nanosensor Made of Poly(vinlydine Fluoride) Nanofiber Webs for Self-Powered Electronics and Robotics [J].