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±¾ÈËÏë×ö¼Ø¹Ì̬µç½âÖʺϳɣ¬ÎÄÏ×ÖиøµÄºÏ³É·½·¨ÈçÏ£ºThe synthesis of the K3SbSe4or Ba-doped K3SbSe4 was carried out in EDA. Typically, 58.5 mg K (1.5 mmol) was dissolved in 5 mL EDA with the formation of a deep  blue  solution.  Elemental  Se  and  Sb  were  added  to  the  above  deep  blue  solution  in  a stoichiometric  proportion  of  K:  Sb:  Se  =  3:1:4.  After  addition,  the  mixture  was  stirred  at  room temperature for 12 hours and then heated at 100 ¡ãC for another 12 hours.Theentirereaction was conducted under an inert atmosphere. The solvent was then removed, and the obtained powder was dried under vacuum at 120 ¡ãC for 24 hours. The Ba-doped K3SbSe4samples can be prepared in a similar procedure mentioned above just by partially replacing quantitative K with Ba. The synthesized powder after removing EDA solvent was ground for 10 mins and cold-pressed into a pellet. The sample pellet was placed inside a quartz tube under an Ar flow, which was heated to 300 ¡ãC for 2 hours, kept at 300¡ãC for 12 hours, and cooled down naturally to room temperature. Õû¸ö·´Ó¦ÔÚ¶èÐÔÆøÌå±£»¤Ï½øÐУ¬ÒòÎªÉæ¼°µ½¸ß»îÐԼص¥ÖÊ£¬ËùÒÔÖ»ÄÜÔÚÊÖÌ×ÏäÖÐ×öÂ𣿿ÉÒÔÏÈÔÚÊÖÌ×ÏäÖÐÓà DEA °Ñ¼ØÈܽâºóÔÙÄóöÀ´£¬ÔÚSchlenk Öз´Ó¦¿ÉÒÔÂð£¿Çó´óÉñÖ¸½Ì
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