Synthesis and characterization of copper sulfide nanocrystallites with low sintering temperatures
Synthesis and characterization of copper sulfide nanocrystallites with low sintering temperatures
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DOI：
10.1039/b803547d
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发表时间：
2008-07
影响因子：
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通讯作者：
J. Shan;P. Pulkkinen;U. Vainio;J. Maijala;J. Merta;H. Jiang;R. Serimaa;E. Kauppinen;H. Tenhu
中科院分区：
文献类型：
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作者：
J. Shan;P. Pulkkinen;U. Vainio;J. Maijala;J. Merta;H. Jiang;R. Serimaa;E. Kauppinen;H. Tenhu
为了研究具有相对较低的烧结温度的纳米墨水，用于通过喷墨印刷技术在纸上制造功能电子器件，我们成功地制备了由自组装单分子膜保护的硫化铜纳米陶瓷。通过FTIR、NMR、热重分析（TGA）、高分辨透射电子显微镜（HRTEM）、X射线光电子能谱（XPS）和广角X射线散射（WAXS）对制备的纳米粒子进行了系统的表征。硫化铜纳米晶在低温下为六方Cu 2S相，但在100 ~ 240 °C温度范围内发生了明显的固结/结晶，并伴随着从六方Cu 2S相到立方Cu1.8S相的转变。150 °C。在加热过程中的保护配体烧毁是密切相关的纳米微晶固结。此外，将硫化铜纳米颗粒沉积在纸上并在240 °C下在空气中烧结。烧结颗粒由立方Cu 1.8S的大晶体组成，没有由于氧化而严重降解。烧结颗粒的电阻率约为1 × 10 - 5（Ω m）。
To study nano-inks with relatively low sintering temperatures for fabrication of functional electronics on paper by inkjet printing technology, we have successfully prepared copper sulfide nanocrystallites protected by self-assembled monolayers. Systematic characterization was performed on as-prepared nanoparticles by FTIR, NMR, thermogravimetric analysis (TGA), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and wide-angle X-ray scattering (WAXS) with heating. The copper sulfide nanocrystallites with crystal sizes <1.5 nm show a hexagonal Cu2S phase at low temperatures but undergo significant consolidation/crystallization from 100 to 240 °C, accompanying a transformation from the hexagonal Cu2S phase to the cubic Cu1.8S phase when heated up to ca. 150 °C. The protective ligand burnout during heating is closely associated with the nanocrystallite consolidation. Further, the copper sulfide nanoparticles were deposited on paper and sintered at 240 °C in air. The sintered particles are composed of large crystals of cubic Cu1.8S with no serious degradation due to oxidation. The resistivity of the sintered particles was of the order of 1 × 10−5 (Ω m).