Enhanced Second Harmonic Generation in a Fdd2 polymorph of C12H8N2O4Zn for UV Nonlinear Optical Applications

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Polymorph C 12 H 8 N 2 O 4 Zn in the Fdd phase has been discovered to exhibit enhanced second harmonic generation.

Language: Английский

La₂Zn₃(SeO₃)₆: A UV Selenite Crystal with Second-Harmonic Generation and Large Birefringence

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Inorganic selenites are promising candidates for nonlinear optical and birefringent crystals. However, that can effectively transmit in the UV region still relatively scarce. In this study, we successfully synthesized first Zn-based selenite with properties using a hydrothermal method by introducing Zn2+ La3+ ions, which cause blue shift compound's bandgap, into system. The compound crystallizes chiral space group P3112 presents unique three-dimensional structure composed of two-dimensional zinc layers bridged LaO10 polyhedra. Notably, possesses wide bandgap (5.0 eV), high birefringence (0.092 at 546 nm), excellent thermal stability (∼540 °C), broad transparency window (0.21-6 μm), apparent SHG efficiency (0.2 × KDP). Our work not only demonstrates great potential as crystals but also expands research scope materials.

Language: Английский

Adjustable Long-Persistent Luminescence of Zn_2.1Mg_0.9Ta₂O₈:Cr³⁺ Using the Multiposition Occupation and Its Application to Dynamic Anticounterfeiting

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Language: Английский