DataVXAdvanced Optical MaterialsPaper
journal article·2024-10Open access

Tuning the 5d State of Pr3+ in Oxyhalides for Efficient Deep Ultraviolet Upconversion

Yangyang Du, Zhengyuan Jin, Ziyu Li, Tianying Sun, Haotian Meng, Xiaojuan Jiang, Yu Wang, Dengfeng Peng, Jianwei Li, Aiwu Wang, Hua Zou, Feng Rao, Feng Wang, Xian Chen

Advanced Optical Materials· Volume 12· Issue 30
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Source abstract

Abstract

Abstract Visible‐to‐ultraviolet (UV) upconversion provides a fascinating strategy to achieve deep UV emission through readily accessible visible light. However, the intensity of deep UV emission obtained through visible‐to‐UV upconversion progress is still far from satisfactory, severely constraining its practical applications. Herein, a novel class of praseodymium ion (Pr3+)‐doped rare‐earth oxyhalides (YOCl, YOBr, and LuOBr) to achieve efficient upconverted deep UV emission in the spectral range of 250–350 nm is developed. The upconverted UV emission intensity of LuOBr:Pr3+ is determined to be 56.7 times stronger than that of the well‐established Lu7O6F9:Pr3+. When employed as a photon‐converter to activate photocatalytic water splitting reactions, upconverted deep UV emission enables H2 generation under visible light (λ > 420 nm) excitation from a xenon lamp. The efficient deep UV upconversion stems from tuning 4f15d1 state of Pr3+ by oxyhalide constituent which both facilitates the absorption of excitation photons in long‐lived intermediate 4f2 states and suppress the probability of nonradiative relaxation from 4f15d1 state. These findings not only provide new insights into a mechanistic understanding of the host effect on upconversion process but also make a breakthrough in developing efficient deep upconversion materials that will expand their further applications.
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Research context

Catalysis & surfaces

OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Nuclear materials and radiation effects

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

Affiliations

Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518060 P. R. China

Centre for Optical and Electromagnetic Research South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China

Institute of Information Technology SZIIT Innovation Harbor Shenzhen Institute of Information Technology Shenzhen 518172 P. R. China

School of Chemical Engineering and Technology Sun Yat‐sen University Zhuhai 519082 P. R. China

Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China

College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 P. R. China

College of Engineering Physics Shenzhen Technology University Shenzhen 518118 P. R. China

School of Science Hainan University Haikou 770228 P. R. China

Department of Materials Science and Engineering City University of Hong Kong 83 Tat Chee Avenue Hong Kong SAR P. R. China

Funding

National Natural Science Foundation of China · Shenzhen Fundamental Research Program · Basic and Applied Basic Research Foundation of Guangdong Province

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