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Submitted manuscript
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Final published version
Licence: CC BY
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Increasing the light extraction and longevity of TMDC monolayers using liquid formed micro-lenses
AU - Woodhead, Christopher
AU - Roberts, Jonny
AU - Noori, Yasir
AU - Cao, Yameng
AU - Bernardo Gavito, Ramon
AU - Tovee, Peter David
AU - Kozikov, Aleksey
AU - Novoselov, K. S.
AU - Young, Robert James
PY - 2016/12/7
Y1 - 2016/12/7
N2 - The recent discovery of semiconducting two-dimensional materials is predicted to lead to the introduction of a series of revolutionary optoelectronic components that are just a few atoms thick. Key remaining challenges for producing practical devices from these materials lie in improving the coupling of light into and out of single atomic layers, and in making these layers robust to the influence of their surrounding environment. We present a solution to tackle both of these problems simultaneously, by deterministically placing an epoxy based micro-lens directly onto the materials’ surface. We show that this approach enhances the photoluminescence of tungsten diselenide (WSe2) monolayers by up to 300%, and nearly doubles the imaging resolution of the system. Furthermore, this solution fully encapsulates the monolayer, preventing it from physical damage and degradation in air. The optical solution we have developed could become a key enabling technology for the mass production of ultra-thin optical devices, such as quantum light emitting diodes.
AB - The recent discovery of semiconducting two-dimensional materials is predicted to lead to the introduction of a series of revolutionary optoelectronic components that are just a few atoms thick. Key remaining challenges for producing practical devices from these materials lie in improving the coupling of light into and out of single atomic layers, and in making these layers robust to the influence of their surrounding environment. We present a solution to tackle both of these problems simultaneously, by deterministically placing an epoxy based micro-lens directly onto the materials’ surface. We show that this approach enhances the photoluminescence of tungsten diselenide (WSe2) monolayers by up to 300%, and nearly doubles the imaging resolution of the system. Furthermore, this solution fully encapsulates the monolayer, preventing it from physical damage and degradation in air. The optical solution we have developed could become a key enabling technology for the mass production of ultra-thin optical devices, such as quantum light emitting diodes.
KW - solid immersion lens
KW - light extraction
KW - TMDC
KW - Optics
KW - 2D materials
U2 - 10.1088/2053-1583/4/1/015032
DO - 10.1088/2053-1583/4/1/015032
M3 - Journal article
VL - 4
JO - 2D Materials
JF - 2D Materials
SN - 2053-1583
IS - 1
M1 - 015032
ER -