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March 29, 2026Inorganic Chemistry1 citations

NH 4 B 3 PO 6 (OH) 3 : A Hydroxyborophosphate with Short DUV Cutoff Edge and Large Birefringence

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BCBailin ChenXinjiang Technical Institute of Physics & ChemistryYJYansheng JiangXinjiang Technical Institute of Physics & ChemistryHJHangwei JiaShihezi University

Key Points

  • This research aims to explore the birefringent properties and DUV cutoff edge of NH4B3PO6(OH)3 for optical applications.
  • Synthesis of novel mixed-coordinated hydroxyborophosphate NH4B3PO6(OH)3
  • Characterization of structural properties including space group
  • Measurement of birefringence and DUV cutoff edge
  • NH4B3PO6(OH)3 exhibits pronounced birefringence with a refractive index difference of 0.057 at 546 nm
  • The DUV cutoff edge is found to be below 200 nm
  • The material is identified as having potential applications in laser polarizing technology and optical communication

Abstract

Birefringent crystals, as core materials for polarization modulation, hold significant importance for the advancement of laser polarizing technology, high-precision instruments, and other optical communication fields today. However, balancing the deep ultraviolet (DUV) cutoff edge and birefringence remains a demanding challenge. Borophosphates have emerged as a promising research direction for optoelectronic functional materials, but the small birefringence of most borophosphates limits their applications. Here, a novel mixed-coordinated hydroxyborophosphate, NH4B3PO6(OH)3, has been successfully designed and obtained. This compound belongs to the triclinic space group P1 (No. 2), exhibiting pronounced birefringence (the experimental refractive index difference value is 0.057 at 546 nm) and a short DUV cutoff edge below 200 nm. These properties indicate that NH4B3PO6(OH)3 exhibits excellent potential as a DUV birefringent material.

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Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/69c8c336de0f0f753b39de73https://doi.org/10.1021/acs.inorgchem.6c00827
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