Dynamic Photochemical and Optoelectronic Control of Photonic Fano Resonances via Monolayer MoS2 Trions

• DOI: 10.1021/acs.nanolett.7b04355
• Publication Date: 2018-01-27T14:24:41Z
• Authors: Xingwang Zhang; Nicolas Biekert; Shinhyuk Choi; Carl H. Naylor; Chawina De-Eknamkul; Wenzhuo Huang; Xiaojie Zhang; Xiaorui Zheng; Dake Wang; A. T. Charlie Joh...; Ertugrul Cubukcu
• Keywords: Fano resonance; Fano plane; Trion; Modulation (music); Nanophotonics

Active tunability of photonic resonances is great interest for various applications such as optical switching and modulation based on optoelectronic materials. Manipulation charged excitons in atomically thin transition metal dichalcogenides (TMDCs) like monolayer MoS2 offers an unexplored route diverse functionalities nanodevices. Here, we experimentally demonstrate the dynamic photochemical control crystal Fano by electrical tuning refractive index via trions without any chemical treatment. The strong spatial spectral overlap between mode active enables efficient resonance. Our approach new directions potential development modulators emerging 2D direct band gap semiconductors.