研究目的
To discover new materials with good mid?infrared (MIR) nonlinear optical (NLO) performances, focusing on Ag4P2Se6 as a potential candidate due to its structural diversities and strong covalent P?Q bonds.
研究成果
Ag4P2Se6 exhibits a moderate SHG response with phase matching ability and a higher LDT than AgGaS2, along with a low melting temperature and excellent chemical stability, making it a promising material for MIR?NLO applications.
研究不足
The study is limited to the evaluation of Ag4P2Se6's SHG property and LDT, with potential for further exploration of other ternary thiophosphates and selenophosphates.
1:Experimental Design and Method Selection:
The study involved the synthesis of Ag4P2Se6 crystals via high?temperature solid state reaction, followed by characterization of their SHG properties and LDT.
2:Sample Selection and Data Sources:
Polycrystalline samples were synthesized from Ag, P, and Se.
3:List of Experimental Equipment and Materials:
Equipment included a XPERT?MPD θ?2θ diffractometer, NETZSCH STA 449F3 unit, PE Lambda 950 spectrophotometer, and VERTEX 70 FTIR spectrophotometer.
4:Experimental Procedures and Operational Workflow:
The synthesis involved heating a mixture of Ag, P, and Se in a quartz tube under vacuum, followed by characterization techniques.
5:Data Analysis Methods:
The SHG response was measured using a modified method of Kurtz and Perry, and LDT was measured using a single?pulse measurement method.
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