11/13/2022 0 Comments Andor solis triggered video![]() ![]() We develop a detailed mechanistic picture for the action of these cation donors and demonstrate that one of them, bis(trifluoromethane)sulfonimide lithium salt (Li-TFSI), enhances the photoluminescence of both MoS 2 and WS 2 to a level double that of the currently best performing super-acid trifluoromethanesulfonimide (H-TFSI) treatment. ![]() Here, a simple and effective approach to significantly enhance the photoluminescence is demonstrated by using a family of cation donors, which we show to be much more effective than commonly used p-dopants. However, the underlying mechanism for the photoluminescence enhancement is not clear, which prevents a rational design of passivation strategies. Surface treatments using a range of chemicals have proven effective to improve the photoluminescence yield of these materials. There is a growing interest in obtaining high quality monolayer transition metal disulfides for optoelectronic applications. ![]()
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