Rare Earth Single‐Atomic Hybrid Glasses for Near‐Infrared II Optical Waveguides

Abstract The increasing demands for modern information communication and storage necessitate the development of near‐infrared (NIR) active optical waveguides. However, achieving efficient NIR emission with minimal optical loss remains a critical challenge. Herein, we present a new class of rare earth single‐atomic hybrid glasses, synthesized via bottom‐up self‐assembly, as a solution to these limitations. By harnessing the ultralong phosphorescence of Nd 3+ ‐doped complex glasses, these materials achieve NIR‐II emission extending to 1.32 µm with a photoluminescence quantum yield (PLQY) of ∼5.7%, setting a new record among state‐of‐the‐art rare‐earth‐based complexes in the NIR‐II region. This exceptional…

• NN
  National Natural Science Foundation of China

  Awards: 22275021, W2441007
• NS
  Natural Science Foundation of Beijing Municipality

  Awards: L234064, 25JL003
• BN
  Beijing Nova Program

  Award: 20230484414
• NK
  National Key Research and Development Program of China

  Award: 2024YFA1211600
• FR
  Fundamental Research Funds for the Central Universities