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Control of Hybrid Exciton Lifetime in MoSe2/WS2 Moiré Heterostructures.
Xu, Haowen; Wang, Jiangcai; Liu, Huan; Chen, Shihong; Sun, Zejun; Wang, Chong; Han, Rui; Wang, Yong; Wang, Yutang; Wang, Zihao; Huang, Shuchun; Ma, Lingwei; Liu, Dameng.
Afiliação
  • Xu H; Institue for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
  • Wang J; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Liu H; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Chen S; School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
  • Sun Z; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Wang C; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Han R; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Wang Y; Laboratory of Optical Detection and Imaging, School of Science, Qingdao University of Technology, Qingdao, 266033, China.
  • Wang Y; School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China.
  • Wang Z; School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
  • Huang S; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
  • Ma L; Institue for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
  • Liu D; State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.
Adv Sci (Weinh) ; 11(34): e2403127, 2024 Sep.
Article em En | MEDLINE | ID: mdl-38970212
ABSTRACT
Hybrid excitons, characterized by their strong oscillation strength and long lifetimes, hold great potential as information carriers in semiconductors. They offer promising applications in exciton-based devices and circuits. MoSe2/WS2 heterostructures represent an ideal platform for studying hybrid excitons, but how to regulate the exciton lifetime has not yet been explored. In this study, layer hybridization is modulated by applying electric fields parallel or antiparallel to the dipole moment, enabling us to regulate the exciton lifetime from 1.36 to 4.60 ns. Furthermore, the time-resolved photoluminescence decay traces are measured at different excitation power. A hybrid exciton annihilation rate of 8.9 × 10-4 cm2 s-1 is obtained by fitting. This work reveals the effects of electric fields and excitation power on the lifetime of hybrid excitons in MoSe2/WS2 1.5° moiré heterostructures, which play important roles in high photoluminescence quantum yield optoelectronic devices based on transition-metal dichalcogenides heterostructures.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article