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Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off
Herein, an insulating biopolymer is exploited to guide the controlled formation of micro/nano-structure and physical confinement of α-δ mixed phase crystalline grains of formamidinium lead iodide (FAPbI(3)) perovskite, functioning as charge carrier concentrators and ensuring improved radiative recom...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195535/ https://www.ncbi.nlm.nih.gov/pubmed/30341317 http://dx.doi.org/10.1038/s41598-018-33729-9 |
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author | Giuri, Antonella Yuan, Zhongcheng Miao, Yanfeng Wang, Jianpu Gao, Feng Sestu, Nicola Saba, Michele Bongiovanni, Giovanni Colella, Silvia Esposito Corcione, Carola Gigli, Giuseppe Listorti, Andrea Rizzo, Aurora |
author_facet | Giuri, Antonella Yuan, Zhongcheng Miao, Yanfeng Wang, Jianpu Gao, Feng Sestu, Nicola Saba, Michele Bongiovanni, Giovanni Colella, Silvia Esposito Corcione, Carola Gigli, Giuseppe Listorti, Andrea Rizzo, Aurora |
author_sort | Giuri, Antonella |
collection | PubMed |
description | Herein, an insulating biopolymer is exploited to guide the controlled formation of micro/nano-structure and physical confinement of α-δ mixed phase crystalline grains of formamidinium lead iodide (FAPbI(3)) perovskite, functioning as charge carrier concentrators and ensuring improved radiative recombination and photoluminescence quantum yield (PLQY). This composite material is used to build highly efficient near-infrared (NIR) FAPbI(3) Perovskite light-emitting diodes (PeLEDs) that exhibit a high radiance of 206.7 W/sr*m(2), among the highest reported for NIR-PeLEDs, obtained at a very high current density of 1000 mA/cm(2), while importantly avoiding the efficiency roll-off effect. In depth photophysical characterization allows to identify the possible role of the biopolymer in i) enhancing the radiative recombination coefficient, improving light extraction by reducing the refractive index, or ii) enhancing the effective optical absorption because of dielectric scattering at the polymer-perovskite interfaces. Our study reveals how the use of insulating matrixes for the growth of perovskites represents a step towards high power applications of PeLEDs. |
format | Online Article Text |
id | pubmed-6195535 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61955352018-10-24 Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off Giuri, Antonella Yuan, Zhongcheng Miao, Yanfeng Wang, Jianpu Gao, Feng Sestu, Nicola Saba, Michele Bongiovanni, Giovanni Colella, Silvia Esposito Corcione, Carola Gigli, Giuseppe Listorti, Andrea Rizzo, Aurora Sci Rep Article Herein, an insulating biopolymer is exploited to guide the controlled formation of micro/nano-structure and physical confinement of α-δ mixed phase crystalline grains of formamidinium lead iodide (FAPbI(3)) perovskite, functioning as charge carrier concentrators and ensuring improved radiative recombination and photoluminescence quantum yield (PLQY). This composite material is used to build highly efficient near-infrared (NIR) FAPbI(3) Perovskite light-emitting diodes (PeLEDs) that exhibit a high radiance of 206.7 W/sr*m(2), among the highest reported for NIR-PeLEDs, obtained at a very high current density of 1000 mA/cm(2), while importantly avoiding the efficiency roll-off effect. In depth photophysical characterization allows to identify the possible role of the biopolymer in i) enhancing the radiative recombination coefficient, improving light extraction by reducing the refractive index, or ii) enhancing the effective optical absorption because of dielectric scattering at the polymer-perovskite interfaces. Our study reveals how the use of insulating matrixes for the growth of perovskites represents a step towards high power applications of PeLEDs. Nature Publishing Group UK 2018-10-19 /pmc/articles/PMC6195535/ /pubmed/30341317 http://dx.doi.org/10.1038/s41598-018-33729-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Giuri, Antonella Yuan, Zhongcheng Miao, Yanfeng Wang, Jianpu Gao, Feng Sestu, Nicola Saba, Michele Bongiovanni, Giovanni Colella, Silvia Esposito Corcione, Carola Gigli, Giuseppe Listorti, Andrea Rizzo, Aurora Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title | Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title_full | Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title_fullStr | Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title_full_unstemmed | Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title_short | Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off |
title_sort | ultra-bright near-infrared perovskite light-emitting diodes with reduced efficiency roll-off |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195535/ https://www.ncbi.nlm.nih.gov/pubmed/30341317 http://dx.doi.org/10.1038/s41598-018-33729-9 |
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