250
8 Conclusion and Outlook
71. D. Colas, L. Dominici, S. Donati, A.A. Pervishko, T.C. Liew, I.A. Shelykh, D. Ballarini,
M. De Giorgi, A. Bramati, G. Gigli, E. Del Valle, F.P. Laussy, A.V. Kavokin, D. Sanvitto,
Polarization shaping of Poincaré beams by polariton oscillations. Light Sci. Appl. 4, e350
(2015)
72. A.K. Geim, I.V. Grigorieva, Van der Waals heterostructures. Nature 499, 419 (2013)
73. K.S. Novoselov, A. Mishchenko, A. Carvalho, A.H. Castro Neto, 2D materials and van der
Waals heterostructures. Science 353, aac9439 (2016)
74. K.F. Mak, J. Shan, Photonics and optoelectronics of 2D semiconductor transition metal
dichalcogenides. Nat. Photon. 10, 216–226 (2016)
75. K.F. Mak, D. Xiao, J. Shan, Light-valley interactions in 2D semiconductors. Nat. Photon. 12,
451–460 (2018)
76. J.R. Schaibley, H. Yu, G. Clark, P. Rivera, J.S. Ross, K.L. Seyler, W. Yao, X. Xu, Valleytronics
in 2D materials. Nat. Rev. Mater. 1, 16055 (2016)
77. Y. Yu, Y. Yu, C. Xu, Y.Q. Cai, L. Su, Y. Zhang, Y.W. Zhang, K. Gundogdu, L. Cao, Engineering
substrate interactions for high luminescence efficiency of transition-metal dichalcogenide
monolayers. Adv. Funct. Mater. 26, 4733–4739 (2016)
78. S. Lippert, L.M. Schneider, D. Renaud, K.N. Kang, O. Ajayi, J. Kuhnert, M.-U. Halbich, O.M.
Abdulmunem, X. Lin, K. Hassoon, S. Edalati-Boostan, Y.D. Kim, W. Heimbrodt, E.-H. Yang,
J.C. Hone, A. Rahimi-Iman, Influence of the substrate material on the optical properties of
tungsten diselenide monolayers. 2D Mater. 4, 025045 (2017). https://doi.org/10.1088/20531583/aa5b21
79. L.M. Schneider, S. Lippert, J. Kuhnert, D. Renaud, K.N. Kang, O. Ajayi, M.-U. Halbich,
O.M. Abdulmunem, X. Lin, K. Hassoon, S. Edalati-Boostan, Y.D. Kim, W. Heimbrodt, E.H.
Yang, J.C. Hone, A. Rahimi-Iman, The impact of the substrate material on the optical properties of 2D WSe 2 monolayers. Semiconductors 52, 565–571 (2018). https://doi.org/10.1134/
S1063782618050275
80. O. Mey, F. Wall, L.M. Schneider, D. Günder, F. Walla, A. Soltani, H. Roskos, N. Yao, P. Qing,
W. Fang, A. Rahimi-Iman, Enhancement of the monolayer tungsten disulfide exciton photoluminescence with a two-dimensional material/air/gallium phosphide in-plane microcavity.
ACS Nano 13, 5259–5267 (2019). https://doi.org/10.1021/acsnano.8b09659
81. Y. Lin, X. Ling, L. Yu, S. Huang, A.L. Hsu, Y.-H. Lee, J. Kong, M.S. Dresselhaus, T. Palacios,
Dielectric screening of excitons and trions in single-layer MoS 2 . Nano Lett. 14, 5569–5576
(2014)
82. A.V. Stier, N.P. Wilson, G. Clark, X. Xu, S.A. Crooker, Probing the influence of dielectric
environment on excitons in monolayer WSe 2 : insight from high magnetic fields. Nano Lett.
16, 7054–7060 (2016)
83. O.A. Ajayi, J.V. Ardelean, G.D. Shepard, J. Wang, A. Antony, T. Taniguchi, K. Watanabe,
T.F. Heinz, S. Strauf, X.Y. Zhu, J.C. Hone, Approaching the intrinsic photoluminescence
linewidth in transition metal dichalcogenide monolayers. 2D Mater. 4, 031011 (2017)
84. L.M. Schneider, S. Lippert, J. Kuhnert, O. Ajayi, D. Renaud, S. Firoozabadi, Q. Ngo, R. Guo,
Y.D. Kim, W. Heimbrodt, J.C. Hone, A. Rahimi-Iman, The influence of the environment
on monolayer tungsten diselenide photoluminescence. Nano-Struct. Nano-Objects 15, 84–97
(2018), online 2017. https://doi.org/10.1016/j.nanoso.2017.08.009
85. L. Meckbach, T. Stroucken, S.W. Koch, Influence of the effective layer thickness on the
ground-state and excitonic properties of transition-metal dichalcogenide systems. Phys. Rev.
B 97, 035425 (2018)
86. F. Cadiz, E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H.
Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, B. Urbaszek,
Excitonic linewidth approaching the homogeneous limit in MoS 2 -based van der Waals heterostructures. Phys. Rev. X 7, 021026 (2017)
87. J. Wierzbowski, J. Klein, F. Sigger, C. Straubinger, M. Kremser, T. Taniguchi, K. Watanabe,
U. Wurstbauer, A.W. Holleitner, M. Kaniber, K. Müller, J.J. Finley, Direct exciton emission
from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit.
Sci. Rep. 7, 12383 (2017)
8 Conclusion and Outlook
71. D. Colas, L. Dominici, S. Donati, A.A. Pervishko, T.C. Liew, I.A. Shelykh, D. Ballarini,
M. De Giorgi, A. Bramati, G. Gigli, E. Del Valle, F.P. Laussy, A.V. Kavokin, D. Sanvitto,
Polarization shaping of Poincaré beams by polariton oscillations. Light Sci. Appl. 4, e350
(2015)
72. A.K. Geim, I.V. Grigorieva, Van der Waals heterostructures. Nature 499, 419 (2013)
73. K.S. Novoselov, A. Mishchenko, A. Carvalho, A.H. Castro Neto, 2D materials and van der
Waals heterostructures. Science 353, aac9439 (2016)
74. K.F. Mak, J. Shan, Photonics and optoelectronics of 2D semiconductor transition metal
dichalcogenides. Nat. Photon. 10, 216–226 (2016)
75. K.F. Mak, D. Xiao, J. Shan, Light-valley interactions in 2D semiconductors. Nat. Photon. 12,
451–460 (2018)
76. J.R. Schaibley, H. Yu, G. Clark, P. Rivera, J.S. Ross, K.L. Seyler, W. Yao, X. Xu, Valleytronics
in 2D materials. Nat. Rev. Mater. 1, 16055 (2016)
77. Y. Yu, Y. Yu, C. Xu, Y.Q. Cai, L. Su, Y. Zhang, Y.W. Zhang, K. Gundogdu, L. Cao, Engineering
substrate interactions for high luminescence efficiency of transition-metal dichalcogenide
monolayers. Adv. Funct. Mater. 26, 4733–4739 (2016)
78. S. Lippert, L.M. Schneider, D. Renaud, K.N. Kang, O. Ajayi, J. Kuhnert, M.-U. Halbich, O.M.
Abdulmunem, X. Lin, K. Hassoon, S. Edalati-Boostan, Y.D. Kim, W. Heimbrodt, E.-H. Yang,
J.C. Hone, A. Rahimi-Iman, Influence of the substrate material on the optical properties of
tungsten diselenide monolayers. 2D Mater. 4, 025045 (2017). https://doi.org/10.1088/20531583/aa5b21
79. L.M. Schneider, S. Lippert, J. Kuhnert, D. Renaud, K.N. Kang, O. Ajayi, M.-U. Halbich,
O.M. Abdulmunem, X. Lin, K. Hassoon, S. Edalati-Boostan, Y.D. Kim, W. Heimbrodt, E.H.
Yang, J.C. Hone, A. Rahimi-Iman, The impact of the substrate material on the optical properties of 2D WSe 2 monolayers. Semiconductors 52, 565–571 (2018). https://doi.org/10.1134/
S1063782618050275
80. O. Mey, F. Wall, L.M. Schneider, D. Günder, F. Walla, A. Soltani, H. Roskos, N. Yao, P. Qing,
W. Fang, A. Rahimi-Iman, Enhancement of the monolayer tungsten disulfide exciton photoluminescence with a two-dimensional material/air/gallium phosphide in-plane microcavity.
ACS Nano 13, 5259–5267 (2019). https://doi.org/10.1021/acsnano.8b09659
81. Y. Lin, X. Ling, L. Yu, S. Huang, A.L. Hsu, Y.-H. Lee, J. Kong, M.S. Dresselhaus, T. Palacios,
Dielectric screening of excitons and trions in single-layer MoS 2 . Nano Lett. 14, 5569–5576
(2014)
82. A.V. Stier, N.P. Wilson, G. Clark, X. Xu, S.A. Crooker, Probing the influence of dielectric
environment on excitons in monolayer WSe 2 : insight from high magnetic fields. Nano Lett.
16, 7054–7060 (2016)
83. O.A. Ajayi, J.V. Ardelean, G.D. Shepard, J. Wang, A. Antony, T. Taniguchi, K. Watanabe,
T.F. Heinz, S. Strauf, X.Y. Zhu, J.C. Hone, Approaching the intrinsic photoluminescence
linewidth in transition metal dichalcogenide monolayers. 2D Mater. 4, 031011 (2017)
84. L.M. Schneider, S. Lippert, J. Kuhnert, O. Ajayi, D. Renaud, S. Firoozabadi, Q. Ngo, R. Guo,
Y.D. Kim, W. Heimbrodt, J.C. Hone, A. Rahimi-Iman, The influence of the environment
on monolayer tungsten diselenide photoluminescence. Nano-Struct. Nano-Objects 15, 84–97
(2018), online 2017. https://doi.org/10.1016/j.nanoso.2017.08.009
85. L. Meckbach, T. Stroucken, S.W. Koch, Influence of the effective layer thickness on the
ground-state and excitonic properties of transition-metal dichalcogenide systems. Phys. Rev.
B 97, 035425 (2018)
86. F. Cadiz, E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H.
Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, B. Urbaszek,
Excitonic linewidth approaching the homogeneous limit in MoS 2 -based van der Waals heterostructures. Phys. Rev. X 7, 021026 (2017)
87. J. Wierzbowski, J. Klein, F. Sigger, C. Straubinger, M. Kremser, T. Taniguchi, K. Watanabe,
U. Wurstbauer, A.W. Holleitner, M. Kaniber, K. Müller, J.J. Finley, Direct exciton emission
from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit.
Sci. Rep. 7, 12383 (2017)