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首页> 外文期刊>ChemPlusChem >Soluble Xanthate Compounds for the Solution Deposition of Metal Sulfide Thin Films
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Soluble Xanthate Compounds for the Solution Deposition of Metal Sulfide Thin Films

机译：用于溶液沉积金属硫化物薄膜的可溶性黄嘌呤化合物

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A series of soluble metal ethylxanthate compounds was synthesised as precursors for metal sulfide thin films to be deposited using solution-based techniques. Initially, a range of air- and moisture-stable organic ethylxanthate (EtXn) salts were synthesised (cation = Me4N (1), Et4N (2), Pr4N (3), Ph4P (4), guanidinium (5), NMeH3 (6), NMe2H2 (7), NMe3H (8), NH4 (9)). Thermogravimetric analysis (TGA) was used to examine their decomposition profiles, which in turn informed the decision of which counter cation was best suited for inclusion in the metal xanthate compounds. Periodic NMR spectroscopy studies and single-crystal X-ray diffraction (SXRD) were used to determine the role protic ammonium counter cations play in the detrimental conversion of xanthates to dithiocarbamate anions. The organic salts 1 and 4 were used to form the metal ethylxanthate compounds (Me4N)[M(EtXn)(x)] (x=3 for M=Cd (10Cd), Ni (10Ni), Zn (10Zn); x=4 for M=La (11 La)) and (Ph4P)[M(EtXn)(3)] (M=Cd (12Cd), Ni (12Ni), Zn (12Zn)). Solubility studies on these compounds were performed using a range of solvents to demonstrate the viability of using these compounds for solution-based deposition methods for thin-film formation. TGA of the metal xanthate compounds was used to examine their thermal-decomposition profiles and the product resulting from thermolysis was found to be the respective metal sulfide. In addition, the coproducts of thermal decomposition were analysed by headspace gas-chromatography mass spectrometry (HS GC-MS) to probe the decomposition mechanism of the precursors. In situ variable-temperature synchrotron XRD studies on both bulk and thin-film samples of 10Cd and 12Cd were used to examine metal sulfide crystalline phase formation. Decomposition of both precursors was found to give CdS in a hexagonal phase, with the addition of CdCl2 found to aid in increasing the crystallite size during crystallisation.
机译：将一系列可溶的金属乙酯化合物合成为使用基于溶液的技术沉积的金属硫化物薄膜的前体。最初，合成了一系列空气和水分稳定的有机乙酯（ETXN）盐（阳离子= ME4N（1），ET4N（2），PR4N（3），PH4P（4），胍（5），NMEH3（6 ），NME2H2（7），NME3H（8），NH 4（9））。热重分析（TGA）用于检查它们的分解剖面，这反过来又告知该决定哪个反阳离子最适合包含在金属黄色化合物中。定期NMR光谱研究和单晶X射线衍射（SXRD）用于确定角色铵对错阳离子在黄原酸盐对二硫代氨基甲酸根阴离子的情况下起作用。有机盐1和4用于形成金属乙酯化合物（ME4N）[M（ETXN）（x）]（对于M = Cd（10CD），Ni（10Ni），Zn（10Zn）; x = 4对于m = la（11a））和（pH4p）[m（etxn）（3）]（m = cd（12cd），ni（12ni），zn（12zn））。使用一系列溶剂进行这些化合物的溶解度研究，以证明使用这些化合物用于溶液的沉积方法的使用这些化合物的可行性。使用金属黄嘌呤化合物的TGA来检查它们的热分解曲线，并发现由热解产生的产物是各自的金属硫化物。另外，通过顶空气相色谱质谱（HS GC-MS）分析了热分解的副系数以探测前体的分解机制。原位可变温度同步同步XRD研究在10CD和12CD的体积和薄膜样品上用于检查金属硫化物结晶相形成。发现两种前体的分解在六方相中给出Cd，加入发现CDCl 2有助于在结晶过程中增加微晶尺寸。

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