인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.