Broadband infrared LEDs based on europium-to-terbium charge transfer luminescence

Autor: Jonas J. Joos, David Van der Heggen, Lisa I. D. J. Martin, Lucia Amidani, Philippe F. Smet, Zoila Barandiarán, Luis Seijo

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)

Broadband near-infrared (IR) light-emitting diodes (LEDs) are desirable for smart devices and bio-imaging applications, but the efficiency is limited by the phosphor materials. The authors report broadband emission in Eu-Tb co-doped CaS due to metal-

Externí odkaz: https://doaj.org/article/86133473a5d14cb0a45566c74e0fac90

Towards persistent phosphors deliberate design: study of La-Ga admixing in LuAG:Ce crystals to engineer elemental homogeneity and carriers trap depths

Autor: Karol Bartosiewicz, Verena Fritz, David Van der Heggen, Damian Szymanski, Justyna Zeler, Akihiro Yamaji, Jan Pejchal, Romana Kucerkova, Alena Beitlerová, Shunsuke Kurosawa, Akira Yoshikawa, Philippe F Smet, Eugeniusz Zych, Martin Nikl

Publikováno v: Journal of Materials Chemistry C.

This research investigated the crystal chemical principles related to the incorporation of incompatible atoms into the garnet host lattice. These considerations might be used to guide and drive the design...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a20a46d245b61d01f99a4dbdf346d44
https://doi.org/10.1039/d3tc01304a

Realizing nondestructive luminescence readout in photochromic ceramics via deep ultraviolet excitation for optical information storage

Autor: Lisa I. D. J. Martin, Jieqi Hu, Dirk Poelman, David Van der Heggen, Zetian Yang

Publikováno v: JOURNAL OF MATERIALS CHEMISTRY C

Photochromic materials exhibiting luminescence modulation behavior are regarded as promising for high-density optical information storage media. During the luminescence readout process however, many of these materials are subject to coloration or ble

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1637843d5642736454ee1cc9ff47922b
https://doi.org/10.1039/d1tc03946f

Microwave-assisted synthesis followed by a reduction step: making persistent phosphors with a large storage capacity

Autor: Philippe Smet, Lisa I. D. J. Martin, David Van der Heggen, José Miranda de Carvalho

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
DALTON TRANSACTIONS

The performance of impurity doped luminescent materials, or phosphors, depends on the composition and crystallinity of the host compound, as well as on the distribution and valence state of the dopant ions. This is particularly true for persistent ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc4487f5191ae9c6858d446e6de9e76f
https://doi.org/10.1039/d0dt00416b

To luminesce or to change valence? Insight into the wavelength dependency of the reversible valence switching of europium in Sr3SiO5

Autor: Jieqi Hu, Zetian Yang, Ang Feng, Rik Van Deun, Philippe F. Smet, David Van der Heggen

Publikováno v: JOURNAL OF PHYSICAL CHEMISTRY C

A good control over the valence state of dopants in luminescent materials or phosphors is important for the develop-ment of highly efficient phosphors for white light-emitting diodes (LEDs). Detailed spectroscopic studies allow us to reveal optically

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffe36cf67f640f9f1830ed79e8111999
https://hdl.handle.net/1854/LU-01GQ764P7KKMFCHFQTGHV893PE