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Comparison of the thermal decomposition processes of several aminoalcohol-based ZnO inks with one containing ethanolamine

机译:几种氨基醇基ZnO油墨与一种含乙醇胺的热分解过程的比较

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摘要

Four inks for the production of ZnO semiconducting films have been prepared with zinc acetate dihydrate as precursor salt and one among the following aminoalcohols: aminopropanol (APr), aminomethyl butanol (AMB), aminophenol (APh) and aminobenzyl alcohol (AB) as stabilizing agent. Their thermal decomposition process has been analyzed in situ by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and evolved gas analysis (EGA), whereas the solid product has been analysed ex-situ by X-ray diffraction (XRD) and infrared spectroscopy (IR). Although, except for the APh ink, crystalline ZnO is already obtained at 300 ºC, the films contain an organic residue that evolves at higher temperature in the form of a large variety of nitrogen-containing cyclic compounds. The results indicate that APr can be a better stabilizing agent than ethanolamine (EA). It gives larger ZnO crystal sizes with similar carbon content. However, a common drawback of all the amino stabilizers (EA included) is that nitrogen atoms have not been completely removed from the ZnO film at the highest temperature of our experiments (600 ºC)
机译:制备了四种用于生产ZnO半导体薄膜的油墨,其中以乙酸锌二水合物为前体盐,并使用以下氨基醇中的一种作为稳定剂:氨基丙醇(APr),氨基甲基丁醇(AMB),氨基苯酚(APh)和氨基苄醇(AB) 。它们的热分解过程已通过热重分析(TGA),差示扫描量热法(DSC)和逸出气体分析(EGA)进行了原位分析,而固体产物已通过X射线衍射(XRD)和红外进行了非原位分析。光谱学(IR)。尽管除APh油墨外,已经在300ºC下获得了结晶ZnO,但薄膜中仍含有有机残留物,该残留物会在较高温度下以多种含氮环状化合物的形式析出。结果表明,APr可以比乙醇胺(EA)更好的稳定剂。它可以产生较大的ZnO晶体,且碳含量相似。但是,所有氨基稳定剂(包括EA)的共同缺点是,在我们实验的最高温度(600ºC)下,氮原子尚未完全从ZnO膜中去除。

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