Single-Photon Emission from Rewritable Nanoimprinted Localized Emitter Arrays in Atomically Thin Crystals
Single-Photon Emission from Rewritable Nanoimprinted Localized Emitter Arrays in Atomically Thin Crystals
复制标题
原子薄晶体中可重写纳米压印局域发射器阵列的单光子发射
DOI:
10.1021/acsphotonics.1c01543
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发表时间:
2022
期刊:
影响因子:
7
通讯作者:
Deng, Hui
中科院分区:
文献类型:
--
作者:
Lai, Ying-Yu;Chen, Po-Han;Chen, Chun-An;Lee, Yi-Hsien;Deng, Hui
Atomically thin van der Waals crystals have emerged as a new class of single-photon emitters (SPEs) that can be created and controlled by strain engineering. Transferring monolayer (ML) crystals over nanostructures enabled position-controlled arrays of SPEs, but the process is hard to control and has a low yield. Pressing an ML with atomic force microscope tips allows greater control but is slow and expensive. Here we show that a nanoimprint on atomically thin crystals provides a new route to the rapid creation of large, rewritable arrays of localized emitters with a high yield. Bright and narrow emission is observed from more than 90% of the imprinted nanoholes in monolayer tungsten diselenide (WSe2). The emission features antibunching and persists up to 150 K. We furthermore demonstrate erasing and rewriting of the emitter arrays, which enables greater flexibility. SPEs created by the nanoimprint method will be compatible with the integration with micro/nano-photonic structures, and the method can be applied to a wide range of two-dimensional materials and their heterostructures.
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Finley JJ
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