Highly Photoluminescent Monolayer MoS2 and WS2 Achieved via Superacid Assisted Vacancy Reparation and Doping Strategy

• Published in: Laser & photonics reviews Vol. 15; no. 12
• Main Authors: Feng, Qiushi, Sun, Ying, Li, Yuanzheng, Yan, Jiaxu, Zhong, Weiheng, Yang, Guochun, Liu, Weizhen, Xu, Haiyang, Liu, Yichun
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.12.2021
• Subjects: Chemical treatment; Chemical vapor deposition; defect repairing; Density functional theory; Doping; Molybdenum disulfide; Monolayers; Photoluminescence; p‐type doping; quantum yield; Scanning transmission electron microscopy; Sulfonamides; Sulfur; sulfur vacancies; Synergistic effect; transition‐metal dichalcogenides; Trifluoromethane; Tungsten disulfide; Vacancies

Chemical treatment of transition‐metal dichalcogenides (TMDs) by organic superacid bis(trifluoromethane) sulfonamide TFSI, has been proved as an effective route to reduce the density of sulfur vacancies and improve photoluminescence quantum yield (PL QY) of monolayer TMDs (1L‐TMDs). However, such ki...