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In recent years, motivated by the discovery of deep-UV(wavelengths below 200 nm) nonlinear optical(NLO) phosphates, Ba_3P_3O_(10)X(Cl, Br), phosphates have entered into a passionate research era. In this review, recently discovered phosphate materials containing different anionic groups, i.e., isolated [PO_4], [P_2O_7] dimer, [P_3O_(10)] trimer, and [PO_3]∞ chain, are summarized, including their syntheses, structures, NLO performances and properties. Especially phosphates with short absorption edges in the deep-UV region and good SHG efficiency are introduced in detail. We hope that this work will present a clear view of the crystal chemistry of phosphates and promote the discovery of new high-performing second-order NLO materials to meet the urgent needs in laser science.
In recent years, motivated by the discovery of deep-UV (most below 200 nm) nonlinear optical (NLO) phosphates, Ba_3P_3O_ (10) X (Cl, Br), phosphates have entered into a passionate research era. discovered phosphate materials containing different anionic groups, ie, [PO_4], [P_2O_7] dimer, [P_3O_ (10)] trimer, and [PO_3] ∞ chain, are summarized, including their syntheses, structures, NLO performances and properties. Especially phosphates with short absorption edges in the deep-UV region and good SHG efficiency are introduced in detail. We hope that this work will present a clear view of the crystal chemistry of phosphates and promote the discovery of new high-performing second-order NLO materials to meet the urgent needs in laser science.