Tuning Photoluminescence Performance of Monolayer MoS2 via H202 Aqueous Solution

We demonstrate a simple while very effective approach to tune the photoluminescence （PL） performance of monolayer MoS2 by dipping into the H2O2 aqueous solution, which is a strong oxidizer that extracts electrons from the MoS2 sheet within several seconds without damaging the crystal structure. Duri...

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Bibliographic Details
Published in:中国物理快报：英文版 2015 (11), p.153-156
Main Author: 程英 王军转 魏晓旭 郭丹 吴冰 余林蔚 王欣然 施毅
Format: Article
Language:English
Subjects:
MoS2
光致发光性能
单层
强氧化剂
晶体结构
水溶液
调谐
过氧化氢
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Summary:We demonstrate a simple while very effective approach to tune the photoluminescence （PL） performance of monolayer MoS2 by dipping into the H2O2 aqueous solution, which is a strong oxidizer that extracts electrons from the MoS2 sheet within several seconds without damaging the crystal structure. During this process, the trion （electron-coupled exciton, X-） is transformed into an exciton （X°）, and thus achieves a greatly enhanced PL performance. These results indicate a convenient way to tune and to control the PL luminescence from monolayer MoS2 and thus lay a basis for the MoS2-based optoelectronic application.
ISSN:0256-307X
1741-3540