DataVXACS Energy LettersPaper
journal article·2023-05-12

Unraveling Luminescent Energy Transfer Pathways: Futuristic Approach of Miniature Shortwave Infrared Light-Emitting Diode Design

Veeramani Rajendran, Kuan-Chun Chen, Wen-Tse Huang, Mikołaj Kamiński, Maciej Grzegorczyk, Sebastian Mahlik, Grzegorz Leniec, Kuang-Mao Lu, Da-Hua Wei, Ho Chang, Ru-Shi Liu

ACS Energy Letters· Volume 8· Issue 5
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Source abstract

Abstract

Phosphor-converted shortwave infrared phosphor light-emitting diodes (pc-SWIR LEDs, 900–1700 nm) are promising next-generation portable light sources for spectroscopy, security, optical communication, and medical applications. A typical design strategy involves energy transfer from Cr 3+ to Ni 2+, and thus, energy transfer from Cr 3+ –Cr 3+ pairs to Ni 2+ ions is important but challenging. Here, we report a Sr 1– x La x Al 5.92 Cr 0.08 Ga 6– x O 19: x Ni 2+ ( x = 0–0.09) series for the SWIR emissions range of 900–1600 nm due to an energy transfer from Cr 3+ and Cr 3+ –Cr 3+ pair to Ni 2+ . Short-range structural studies using electron paramagnetic resonance and magnetometry measurements reveal that Ni 2+ ions likely exist as isolated Ni 2+ ions and Cr 3+ –Ni 2+ pairs rather than forming Ni 2+ –Ni 2+ pairs. The fabricated prototype SWIR pc-LED delivers a radiant flux of 12.43 mW under a 350 mA driving current. This work provides insights into the codopant strategy for energy transfer and the design of promising next-generation SWIR phosphors.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · 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

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

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

Department of Technical Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin, al. Piastow 48, 70-311 Szczecin, Poland

Everlight Electronics Co., Ltd., New Taipei City 238, Taiwan

Department of Semiconductor and Electro-Optical Technology, Minghsin University of Science and Technology, Hsinchu 304, Taiwan

Funding

Narodowe Centrum Nauki · Narodowe Centrum Badan i Rozwoju · National Science and Technology Council

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