메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

논문 기본 정보

저자정보
출처
Springer Science and Business Media LLC npj 2D Materials and Applications 7(1)
오류 신고하기
표지

검색

    초록·키워드

    Abstract MoS 2 has attracted intense interest in many applications. Natural MoS 2 and field-effect transistors made of it generally exhibit n -type characteristics, but its origin is unknown. Herein, we show that C is the origin of the universal n -type doping of natural MoS 2 . Photoemission spectroscopies reveal that while many MoS 2 samples with C detected are n -type, some without C exhibit p -type characteristics. The C-free, p -type MoS 2 changes to n -type over time with the concurrent appearance of C that is out-diffused from bulk, indicating that C induces the n -type doping. The C-origin is verified by C-deposition and supported by theoretical calculations. This carbon appears as nanometer-scale defects frequently observed in scanning tunneling microscopy. In addition, we propose, based on the calculations, that S vacancies are responsible for the p -type characteristics, which contrasts with the widespread belief. This work provides new perspectives on MoS 2 doping and presents a new direction for fabricating reliable MoS 2 devices.

    본문·목차

    최근 본 자료 전체보기