Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling

Colloidal quantum wells are highly promising for applications of solution-processed lasers, but their performance is limited by multi-excitonic nature of the materials. Here, the authors demonstrate optical gain in graded alloy core/shell CdSe/CdS@CdZnS quantum wells at less than one exciton per par...

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Main Authors:	Nima Taghipour, Savas Delikanli, Sushant Shendre, Mustafa Sak, Mingjie Li, Furkan Isik, Ibrahim Tanriover, Burak Guzelturk, Tze Chien Sum, Hilmi Volkan Demir
Format:	Article
Language:	English
Published:	Nature Publishing Group 2020-07-01
Series:	Nature Communications
Online Access:	https://doi.org/10.1038/s41467-020-17032-8

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spelling	doaj-339ca91821f84c629272114d07f069042021-07-04T11:47:47ZengNature Publishing GroupNature Communications2041-17232020-07-011111810.1038/s41467-020-17032-8Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shellingNima Taghipour0Savas Delikanli1Sushant Shendre2Mustafa Sak3Mingjie Li4Furkan Isik5Ibrahim Tanriover6Burak Guzelturk7Tze Chien Sum8Hilmi Volkan Demir9Department of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversityDepartment of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversityLuminous! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, School of Materials Science and Engineering, Nanyang Technological UniversityDepartment of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversityDepartment of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversityDepartment of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversityAdvanced Photon Source, Argonne National LaboratorySchool of Physical and Mathematical Sciences, Nanyang Technological UniversityDepartment of Electrical and Electronics Engineering, Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent UniversityColloidal quantum wells are highly promising for applications of solution-processed lasers, but their performance is limited by multi-excitonic nature of the materials. Here, the authors demonstrate optical gain in graded alloy core/shell CdSe/CdS@CdZnS quantum wells at less than one exciton per particle resulting in ultralow thresholds.https://doi.org/10.1038/s41467-020-17032-8
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Nima Taghipour Savas Delikanli Sushant Shendre Mustafa Sak Mingjie Li Furkan Isik Ibrahim Tanriover Burak Guzelturk Tze Chien Sum Hilmi Volkan Demir
spellingShingle	Nima Taghipour Savas Delikanli Sushant Shendre Mustafa Sak Mingjie Li Furkan Isik Ibrahim Tanriover Burak Guzelturk Tze Chien Sum Hilmi Volkan Demir Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling Nature Communications
author_facet	Nima Taghipour Savas Delikanli Sushant Shendre Mustafa Sak Mingjie Li Furkan Isik Ibrahim Tanriover Burak Guzelturk Tze Chien Sum Hilmi Volkan Demir
author_sort	Nima Taghipour
title	Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
title_short	Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
title_full	Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
title_fullStr	Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
title_full_unstemmed	Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
title_sort	sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling
publisher	Nature Publishing Group
series	Nature Communications
issn	2041-1723
publishDate	2020-07-01
description	Colloidal quantum wells are highly promising for applications of solution-processed lasers, but their performance is limited by multi-excitonic nature of the materials. Here, the authors demonstrate optical gain in graded alloy core/shell CdSe/CdS@CdZnS quantum wells at less than one exciton per particle resulting in ultralow thresholds.
url	https://doi.org/10.1038/s41467-020-17032-8
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Sub-single exciton optical gain threshold in colloidal semiconductor quantum wells with gradient alloy shelling

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