Controlling the spontaneous emission rate of monolayer MoS2 in a photonic crystal nanocavity
Controlling the spontaneous emission rate of monolayer MoS2 in a photonic crystal nanocavity
复制标题
DOI：
10.1063/1.4826679
复制
发表时间：
2013-10-28
影响因子：
4
通讯作者：
Englund, Dirk
中科院分区：
文献类型：
--
作者：
Gan, Xuetao;Gao, Yuanda;Englund, Dirk
本文报道了控制二硫化钼（MoS2）单层与平面光子晶体（PPC）纳米腔耦合的自发发射（SE）速率。空间分辨光致发光（PL）映射显示，当MoS2单层在PPC空腔上、PPC晶格上、气隙上和未图像化磷化镓衬底上时，发射强度有很强的变化。腔耦合MoS2发射的极化依赖性表明，提取的PL强度比非耦合发射强5倍以上，这表明潜在的腔模式Purcell增强MoS2 SE率超过70倍。(c) 2013年作者。除另有说明外，所有文章内容均采用知识共享署名3.0未移植许可协议。
We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS2) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS2 monolayer is on the PPC cavity, on the PPC lattice, on the air gap, and on the unpatterned gallium phosphide substrate. Polarization dependences of the cavity-coupled MoS2 emission show a more than 5 times stronger extracted PL intensity than the un-coupled emission, which indicates an underlying cavity mode Purcell enhancement of the MoS2 SE rate exceeding a factor of 70. (c) 2013 Author( s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.