A facile arrested precipitation method for synthesis of pure wurtzite Cu"2ZnSnS"4 nanocrystals using thiourea as a sulfur source
A facile arrested precipitation method for synthesis of pure wurtzite Cu"2ZnSnS"4 nanocrystals using thiourea as a sulfur source
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DOI：
10.1016/j.materresbull.2012.08.014
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发表时间：
2012-11
影响因子：
5.4
通讯作者：
Chunya Li;Chunyang Li;E. Ha;Wing‐Leung Wong;Cui-E Li;Kam-piu Ho;Kwok‐yin Wong
中科院分区：
文献类型：
--
作者：
Chunya Li;Chunyang Li;E. Ha;Wing‐Leung Wong;Cui-E Li;Kam-piu Ho;Kwok‐yin Wong
以二乙醇胺为溶剂，硫脲为硫源，采用阻挡沉淀法，在240℃、反应条件简单的条件下合成了纤锌矿Cu2ZnSnS4(CZTS)纳米晶。用X射线衍射仪和透射电子显微镜对CZTS纳米晶的结构和形貌进行了表征。对照实验表明，CZTS纳米晶很容易得到纯纤锌矿结构的纳米晶。块体CZTS产物的平均直径为10±1.1 nm。估算的直接带隙能为1.56 eV，表明该方法制备的CZTS纳米晶在光伏器件中具有良好的应用前景。
A facile route for the synthesis of wurtzite Cu2ZnSnS4(CZTS) nanocrystals was developed by an arrested precipitation method at 240°C under simple reaction conditions with diethanolamine as the solvent and thiourea as sulfur source. The structure and morphology of the CZTS nanocrystals were characterized by X-ray diffraction and transmission electron microscopy. Control experiments demonstrated that CZTS nanocrystals which are purely wurtzite structure are readily obtained. The average diameter of the bulk CZTS products is found to be 10±1.1nm. The estimated direct bandgap energy is 1.56eV, which indicates that the CZTS nanocrystals produced by this method possess promising applications in photovoltaic devices.