Ultralow threshold optical gain enabled by quantum rings of inverted type-I CdS/CdSe core/crown nanoplatelets in the blue

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buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorIşık, Furkan
buir.contributor.authorShabani, Farzan
buir.contributor.authorBaruj, Hamed Dehghanpour
buir.contributor.authorTaghipour, Nima
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDelikanlı, Savaş|0000-0002-0613-8014
buir.contributor.orcidIşık, Furkan|0000-0001-5881-5438
buir.contributor.orcidShabani, Farzan|0000-0003-2174-5960
buir.contributor.orcidBaruj, Hamed Dehghanpour|0000-0003-3822-6622
buir.contributor.orcidTaghipour, Nima|0000-0003-1094-5406
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage2002220-6en_US
dc.citation.issueNumber8en_US
dc.citation.spage2002220-1en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorDelikanlı, Savaş
dc.contributor.authorIşık, Furkan
dc.contributor.authorShabani, Farzan
dc.contributor.authorBaruj, Hamed Dehghanpour
dc.contributor.authorTaghipour, Nima
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2022-01-24T13:53:48Z
dc.date.available2022-01-24T13:53:48Z
dc.date.issued2021-04-20
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractAchieving low-threshold optical gain for solution-processed materials is crucial for their real-life applications and deployment as gain media. However, the realization of low gain threshold in the blue region has shown to be technically an extremely challenging task using colloidal nanocrystals as a result of fast nonradiative Auger rates in smaller nanocrystals. Here, ultralow-threshold blue amplified spontaneous emission (ASE) (≈2.7 µJ cm−2) accompanied with a large net modal gain coefficient of 360 cm−1 in the blue enabled by blue-emitting (≈455–465 nm) colloidal quantum rings (QRs) of inverted type-I CdS/CdSe core/crown nanoplatelets (NPLs) is proposed and demonstrated. The synthesized QRs with controlled crown size outperform the best reported ASE thresholds and net modal gain coefficients from the solution-processed materials by ≈2.5- and ≈4-fold, respectively, in the similar blue spectral window. Utilizing this QR architecture, it is also shown that the ASE peak can be spectrally tuned by controlling the lateral size of the crown and hence quantum confinement in the lateral direction. These outstanding results support the prospects of these solution-processed QRs made of 2D hetero-NPLs in the challenging blue region as colloidal gain.en_US
dc.description.provenanceSubmitted by Samet Emre (samet.emre@bilkent.edu.tr) on 2022-01-24T13:53:48Z No. of bitstreams: 1 Ultralow_threshold_optical_gain_enabled_by_quantum_rings_of_inverted_type-I_CdS_CdSe_core_crown_nanoplatelets_in_the_blue.pdf: 1472997 bytes, checksum: eef690895755b3c2898f3d7a3d237943 (MD5)en
dc.description.provenanceMade available in DSpace on 2022-01-24T13:53:48Z (GMT). No. of bitstreams: 1 Ultralow_threshold_optical_gain_enabled_by_quantum_rings_of_inverted_type-I_CdS_CdSe_core_crown_nanoplatelets_in_the_blue.pdf: 1472997 bytes, checksum: eef690895755b3c2898f3d7a3d237943 (MD5) Previous issue date: 2021-04-20en
dc.embargo.release2021-04-20
dc.identifier.doi10.1002/adom.202002220en_US
dc.identifier.eissn2195-1071
dc.identifier.urihttp://hdl.handle.net/11693/76770
dc.language.isoEnglishen_US
dc.publisherWiley-VCH Verlag GmbH & Co. KGaAen_US
dc.relation.ispartofUltralow threshold optical gain enabled by quantum rings of inverted type-I CdS/CdSe core/crown nanoplatelets in the blueen_US
dc.relation.isversionofhttps://doi.org/10.1002/adom.202002220en_US
dc.source.titleAdvanced Optical Materialsen_US
dc.subjectAmplified spontaneous emissionen_US
dc.subjectBlue optical gainen_US
dc.subjectColloidal quantum wellsen_US
dc.subjectNanoplatelet heterostructuresen_US
dc.subjectQuantum ringsen_US
dc.titleUltralow threshold optical gain enabled by quantum rings of inverted type-I CdS/CdSe core/crown nanoplatelets in the blueen_US
dc.typeArticleen_US

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