Related Experiment Video
Updated: May 8, 2026
08:58
Seedless Growth of Bismuth Nanowire Array via Vacuum Thermal Evaporation
Published on: December 21, 2015
Breaking Inversion Symmetry via Vanadium Coordination Engineering in Bismuth Vanadium Selenites.
Chanhee Ko1, Congcong Jin1, Taek Rim Kim2
1Department of Chemistry, Sogang University, Seoul, Republic of Korea.
Small (Weinheim an Der Bergstrasse, Germany)
|May 7, 2026
Summary
New bismuth vanadium selenites were synthesized, with one exhibiting strong nonlinear optical properties. This discovery offers a promising pathway for developing robust infrared photonic materials.
Area of Science:
- Materials Science
- Solid-state Chemistry
- Crystallography
Background:
- Bismuth vanadium selenites are explored for their unique structural and optical properties.
- Understanding the relationship between crystal structure and nonlinear optical (NLO) behavior is crucial for photonic applications.
Purpose of the Study:
- Synthesize novel bismuth vanadium selenite compounds.
- Investigate the impact of vanadium oxidation state and coordination on crystal symmetry and NLO properties.
- Evaluate the potential of these materials for infrared photonic applications.
Main Methods:
- Hydrothermal synthesis
- Mild solid-state synthesis
- X-ray crystallography
- Nonlinear optical characterization (THG and SHG measurements)
- Infrared transparency window analysis
- Laser-induced damage threshold testing
Main Results:
- Three new bismuth vanadium selenites, Bi(VO2)(SeO3)2, Bi2(VO2F)(SeO3)3, and Bi2(VO)(SeO3)4, were successfully synthesized.
- Bi2(VO)(SeO3)4 crystallizes in a polar noncentrosymmetric space group, exhibiting strong second-harmonic generation (SHG) NLO activity (11.6x α-SiO2) and broad infrared transparency (1000-4000 nm).
- Vanadium oxidation state reduction from V5+ to V4+ induced symmetry breaking and enhanced NLO responses, particularly in the V4+-selenite framework.
Conclusions:
- Vanadium coordination-number reduction and oxidation-state engineering are effective strategies for achieving symmetry breaking in selenite frameworks.
- Bi2(VO)(SeO3)4 is a promising material for infrared photonic devices due to its strong NLO activity, transparency, and damage tolerance.
- This work provides a new avenue for designing advanced functional materials for optical applications.
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