DataVXACS Energy LettersPaper
journal article·2019-02-08

Hydrogen-Containing Na3HTi1–xMnxF8Narrow-Band Phosphor for Light-Emitting Diodes

Mu-Huai Fang, Tsun-Hsiung Yang, Tadeusz Lesniewski, Chi Lee, Sebastian Mahlik, Marek Grinberg, Vanessa K. Peterson, Christophe Didier, Wei Kong Pang, Chaochin Su, Ru-Shi Liu

ACS Energy Letters· Volume 4· Issue 2
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Source abstract

Abstract

We synthesize the phosphor Na3HTi1–xMnxF8 (Na3HTiF8:Mn4+) material series using a coprecipitation method. We determine the complete phase and crystallographic structure of the Na3HTiF8 series end-member, including the determination of the H atoms at the 4b (0, 1/2, 0) crystallographic site within the Cmcm space group symmetry structure, resulting in a quantum efficiency of ∼44%, which is comparative to the Na2SiF6:Mn4+ phosphor materials. We successfully model the luminescent properties of the Na3HTi1–xMnxF8 material series, including temperature and time-dependent photoluminescence, providing a good prediction of the decay properties at low and high temperature and revealing the existence of Mn5+ during the ionization process. Notably, LED package data indicates that the Na3HTi1–xMnxF8 material series could be a promising candidate for high-level and back-lighting devices. This research reveals the role that hydrogen plays in determining fluoride phosphor structure and properties, revealing a new path for the synthesis of fluoride phosphors.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Inorganic Fluorides and Related Compounds · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, National Taiwan University, Taipei 106, Taiwan

Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan

Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Gdańsk University, Wita Stwosza 57, 80-308 Gdańsk, Poland

Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia

Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia

Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 106, Taiwan

Funding

University of Wollongong · Narodowe Centrum Nauki · Australian Research Council · Ministry of Science and Technology, Taiwan · Narodowe Centrum Badan i Rozwoju

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