2024-03-29T07:40:56Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1710022020-09-08T08:15:09Zcom_10234_7013com_10234_9col_10234_8638
Repositori UJI
author
Scott, Riccardo
author
Heckmann, Jan
author
Prudnikau, Anatol V.
author
Antanovich, Artsiom
author
Mikhailov, Aleksandr
author
Owschimikow, Nina
author
Artemyev, Mikhail V.
author
Climente, Juan I.
author
Woggon, Ulrike
author
Grosse, Nicolai B.
author
Achtstein, Alexander W.
2017-12-15T10:17:11Z
2017-12-15T10:17:11Z
2017
1748-33871748-3395
http://hdl.handle.net/10234/171002
https://doi.org/10.1038/nnano.2017.177
ntrinsically directional light emitters are potentially important for applications in photonics including lasing and energy-efficient display technology. Here, we propose a new route to overcome intrinsic efficiency limitations in light-emitting devices by studying a CdSe nanoplatelets monolayer that exhibits strongly anisotropic, directed photoluminescence. Analysis of the two-dimensional k-space distribution reveals the underlying internal transition dipole distribution. The observed directed emission is related to the anisotropy of the electronic Bloch states governing the exciton transition dipole moment and forming a bright plane. The strongly directed emission perpendicular to the platelet is further enhanced by the optical local density of states and local fields. In contrast to the emission directionality, the off-resonant absorption into the energetically higher 2D-continuum of states is isotropic. These contrasting optical properties make the oriented CdSe nanoplatelets, or superstructures of parallel-oriented platelets, an interesting and potentially useful class of semiconductor-based emitters.
eng
Directed emission of CdSe nanoplatelets originating from strongly anisotropic 2D electronic structure
info:eu-repo/semantics/article
TElDRU5DSUEgREUgRElTVFJJQlVDScOTTiBOTyBFWENMVVNJVkEKCkFjZXB0YW5kbyBlc3RhIGxpY2VuY2lhLCB1c3RlZCAoZWwgYXV0b3IvZXMgbyBlbCBwcm9waWV0YXJpby9zIGRlIGxvcyBkZXJlY2hvcyBkZSBhdXRvcikKZ2FyYW50aXphIGEgbGEgVW5pdmVyc2l0YXQgSmF1bWUgSSBlbCBkZXJlY2hvIG5vIGV4Y2x1c2l2byBkZSBhcmNoaXZhcgplbiBlbCBSZXBvc2l0b3JpbyBVSkksIHJlcHJvZHVjaXIgKGNvbW8gc2UgZGVmaW5lIG3DoXMgYWJham8pLApjb211bmljYXIgeS9vIGRpc3RyaWJ1aXIgc3UgZG9jdW1lbnRvIG11bmRpYWxtZW50ZSBlbiBmb3JtYXRvIGVsZWN0csOzbmljby4KClRhbWJpw6luIGVzdMOhIGRlIGFjdWVyZG8gY29uIHF1ZSBsYSBVbml2ZXJzaXRhdCBKYXVtZSBJIHB1ZWRhIGNvbnNlcnZhciAKbcOhcyBkZSB1bmEgY29waWEgZGUgZXN0ZSBkb2N1bWVudG8sIHksIHNpbiBhbHRlcmFyIHN1IGNvbnRlbmlkbywKdHJhbnNmb3JtYXJsbyBhIG90cm9zIGZvcm1hdG9zLCBhcG95b3MgbyBtZWRpb3MgcGFyYSBnYXJhbnRpemFyCmxhIHNlZ3VyaWRhZCwgcHJlc2VydmFjacOzbiB5IGFjY2Vzby4KCkRlY2xhcmEgcXVlIGVsIGRvY3VtZW50byBlcyB1biB0cmFiYWpvIG9yaWdpbmFsIHN1eW8geS9vIHRpZW5lIGVsIGRlcmVjaG8KcGFyYSBvdG9yZ2FyIGxvcyBkZXJlY2hvcyBjb250ZW5pZG9zIGVuIGVzdGEgbGljZW5jaWEuClRhbWJpw6luIGRlY2xhcmEgcXVlIHN1IGRvY3VtZW50byBubyBpbmZyaW5nZSBsb3MgZGVyZWNob3MKZGUgYXV0b3IgZGUgb3RyYSBwZXJzb25hIG8gZW50aWRhZC4KClNpIGVsIGRvY3VtZW50byBjb250aWVuZSBtYXRlcmlhbGVzIGRlIGxvcyBjdWFsZXMgbm8gdGllbmUgZGVyZWNob3MgZGUgYXV0b3IsCmRlY2xhcmEgcXVlIGhhIG9idGVuaWRvIGVsIHBlcm1pc28gbmVjZXNhcmlvIHBhcmEgb3RvcmdhciBhIGxhIFVuaXZlcnNpdGF0IEphdW1lIEkKbG9zIGRlcmVjaG9zIHJlcXVlcmlkb3MgcG9yIGxhIHByZXNlbnRlIGxpY2VuY2lhLCB5IHF1ZSBlbCBtYXRlcmlhbCBjb24gZGVyZWNob3MKZGUgdGVyY2Vyb3MgZXN0w6EgY2xhcmFtZW50ZSBpZGVudGlmaWNhZG8geSByZWNvbm9jaWRvIGVuIGVsIGNvbnRlbmlkbwpkZWwgZG9jdW1lbnRvIGVudHJlZ2Fkby4KClNpIGVsIGRvY3VtZW50byBzZSBiYXNhIGVuIHVuYSBvYnJhIHF1ZSBoYSBzaWRvIHBhdHJvY2luYWRhIG8gYXBveWFkYQpwb3IgdW5hIG9yZ2FuaXphY2nDs24gZGlmZXJlbnRlIGVuIGxhIFVuaXZlcnNpdGF0IEphdW1lIEksIApzZSBwcmVzdXBvbmUgcXVlIHNlIGhhIGN1bXBsaWRvIGNvbiBjdWFscXVpZXIgZGVyZWNobyBkZSByZXZpc2nDs24KdSBvdHJhcyBvYmxpZ2FjaW9uZXMgcmVxdWVyaWRhcyBwb3IgZXN0ZSBjb250cmF0byBvIGFjdWVyZG8uCgpMYSBVbml2ZXJzaXRhdCBKYXVtZSBJIGlkZW50aWZpY2Fyw6EgY2xhcmFtZW50ZSBzdS9zIG5vbWJyZS9zIGNvbW8gYXV0b3IvcwpvIHByb3BpZXRhcmlvL3MgZGUgbG9zIGRlcmVjaG9zIGRlIGV4cGxvdGFjacOzbiB5IG5vIGhhcsOhIG5pbmd1bmEgYWx0ZXJhY2nDs24KZGUgc3UgZG9jdW1lbnRvIGRpZmVyZW50ZSBhIGxhcyBwZXJtaXRpZGFzIGVuIGVzdGEgbGljZW5jaWEuCgpMYSBVbml2ZXJzaXRhdCBKYXVtZSBJIGFzaWduYXLDoSBhIHN1IGRvY3VtZW50bywgZW4gY2FzbyBxdWUgYXPDrSBsbyBoYXlhIGluZGljYWRvLApsYSBsaWNlbmNpYSBDcmVhdGl2ZSBDb21tb25zICBjb3JyZXNwb25kaWVudGUgcGFyYSBwcm90ZWdlciBsYSBwcm9waWVkYWQgaW50ZWxlY3R1YWwKZGVsIGF1dG9yIHkgZ2FyYW50aXphciBzdSByZXV0aWxpemFjacOzbiBlbiBsYXMgY29uZGljaW9uZXMgZXN0YWJsZWNpZGFzLiAK
URL
https://repositori.uji.es/xmlui/bitstream/10234/171002/5/56155.pdf
File
MD5
78964d6b8adff036a26fa73985517618
3019824
application/pdf
56155.pdf
URL
https://repositori.uji.es/xmlui/bitstream/10234/171002/8/56155.pdf.txt
File
MD5
5ff0a5a469a1833d48426d45e80528a8
45794
text/plain
56155.pdf.txt