Investigation of vulcanization of non-crystalline Cu₂ZnSnS₄ nano-particles

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• 作者：Shih Hsiung Wu ; Chuan Feng Shih ; Hung Chun Pan ; Yu Yun Wang ; Ho Min Chen ; Chung Shin Wu
• 关键词：Cu2ZnSnS4 ; CZTS ; Vulcanization
• 刊名：Thin Solid Films
• 出版年：2013
• 出版时间：1 October, 2013
• 年：2013
• 卷：544
• 期：Complete
• 页码：19-23
• 全文大小：1203 K

文摘

Non-crystalline Cu₂ZnSnS₄(CZTS) nano-particles were fabricated by hydrothermal method. CZTS nano-particles that have different Cu/(Zn + Sn) ratio (0.77, 0.89, 1.02) were separately prepared. The morphology, composition and crystal structure of the as-prepared nano-particles and the vulcanized films were investigated by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffractometry, and Raman spectroscopy. When the temperature and time of vulcanization exceeded 400 ¡ãC and 60 min, respectively, the Cu-rich phase (Cu₃SnS₄) emerged. Sn lost during vulcanization. CZTS sample with 0.77 Cu content (Cu/(Zn + Sn) = 0.77) showed pure kesterite CZTS without secondary phases when they were vulcanized at 400 ¡ãC for 60 min.