Cargando…

Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets

Semiconductor colloidal nanoplatelets (NPLs) are a promising new class of nanostructures that can bring much impact on lightning technologies, light-emitting diodes (LED), and laser fabrication. Indeed, great progress has been made in optimizing the optical properties of the NPLs for the visible spe...

Descripción completa

Detalles Bibliográficos
Autores principales: Skurlov, Ivan, Sokolova, Anastasiia, Galle, Tom, Cherevkov, Sergei, Ushakova, Elena, Baranov, Alexander, Lesnyak, Vladimir, Fedorov, Anatoly, Litvin, Aleksandr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7767437/
https://www.ncbi.nlm.nih.gov/pubmed/33371429
http://dx.doi.org/10.3390/nano10122570
_version_ 1783628958354374656
author Skurlov, Ivan
Sokolova, Anastasiia
Galle, Tom
Cherevkov, Sergei
Ushakova, Elena
Baranov, Alexander
Lesnyak, Vladimir
Fedorov, Anatoly
Litvin, Aleksandr
author_facet Skurlov, Ivan
Sokolova, Anastasiia
Galle, Tom
Cherevkov, Sergei
Ushakova, Elena
Baranov, Alexander
Lesnyak, Vladimir
Fedorov, Anatoly
Litvin, Aleksandr
author_sort Skurlov, Ivan
collection PubMed
description Semiconductor colloidal nanoplatelets (NPLs) are a promising new class of nanostructures that can bring much impact on lightning technologies, light-emitting diodes (LED), and laser fabrication. Indeed, great progress has been made in optimizing the optical properties of the NPLs for the visible spectral range, which has already made the implementation of a number of effective devices on their basis possible. To date, state-of-the-art near-infrared (NIR)-emitting NPLs are significantly inferior to their visible-range counterparts, although it would be fair to say that they received significantly less research attention so far. In this study, we report a comprehensive analysis of steady-state and time-dependent photoluminescence (PL) properties of four monolayered (ML) PbSe NPLs. The PL measurements are performed in a temperature range of 78–300 K, and their results are compared to those obtained for CdSe NPLs and PbSe quantum dots (QDs). We show that multiple emissive states, both band-edge and trap-related, are responsible for the formation of the NPLs’ PL band. We demonstrate that the widening of the PL band is caused by the inhomogeneous broadening rather than homogeneous one, and analyze the possible contributions to PL broadening.
format Online
Article
Text
id pubmed-7767437
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-77674372020-12-28 Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets Skurlov, Ivan Sokolova, Anastasiia Galle, Tom Cherevkov, Sergei Ushakova, Elena Baranov, Alexander Lesnyak, Vladimir Fedorov, Anatoly Litvin, Aleksandr Nanomaterials (Basel) Article Semiconductor colloidal nanoplatelets (NPLs) are a promising new class of nanostructures that can bring much impact on lightning technologies, light-emitting diodes (LED), and laser fabrication. Indeed, great progress has been made in optimizing the optical properties of the NPLs for the visible spectral range, which has already made the implementation of a number of effective devices on their basis possible. To date, state-of-the-art near-infrared (NIR)-emitting NPLs are significantly inferior to their visible-range counterparts, although it would be fair to say that they received significantly less research attention so far. In this study, we report a comprehensive analysis of steady-state and time-dependent photoluminescence (PL) properties of four monolayered (ML) PbSe NPLs. The PL measurements are performed in a temperature range of 78–300 K, and their results are compared to those obtained for CdSe NPLs and PbSe quantum dots (QDs). We show that multiple emissive states, both band-edge and trap-related, are responsible for the formation of the NPLs’ PL band. We demonstrate that the widening of the PL band is caused by the inhomogeneous broadening rather than homogeneous one, and analyze the possible contributions to PL broadening. MDPI 2020-12-21 /pmc/articles/PMC7767437/ /pubmed/33371429 http://dx.doi.org/10.3390/nano10122570 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Skurlov, Ivan
Sokolova, Anastasiia
Galle, Tom
Cherevkov, Sergei
Ushakova, Elena
Baranov, Alexander
Lesnyak, Vladimir
Fedorov, Anatoly
Litvin, Aleksandr
Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title_full Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title_fullStr Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title_full_unstemmed Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title_short Temperature-Dependent Photoluminescent Properties of PbSe Nanoplatelets
title_sort temperature-dependent photoluminescent properties of pbse nanoplatelets
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7767437/
https://www.ncbi.nlm.nih.gov/pubmed/33371429
http://dx.doi.org/10.3390/nano10122570
work_keys_str_mv AT skurlovivan temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT sokolovaanastasiia temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT galletom temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT cherevkovsergei temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT ushakovaelena temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT baranovalexander temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT lesnyakvladimir temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT fedorovanatoly temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets
AT litvinaleksandr temperaturedependentphotoluminescentpropertiesofpbsenanoplatelets