Alternative Synthesis of CuFeSe2 Nanocrystals with Magnetic and Photoelectric Properties
Alternative Synthesis of CuFeSe2 Nanocrystals with Magnetic and Photoelectric Properties
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具有磁性和光电特性的 CuFeSe2 纳米晶的替代合成
DOI：
10.1021/am508844w
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发表时间：
2015-02-04
影响因子：
9.5
通讯作者：
Yang, Qing
中科院分区：
文献类型：
--
作者：
Wang, Wenliang;Jiang, Jun;Yang, Qing
通过金属乙酰丙酮化物与二苯基二硒化物（Ph2Se2）在油胺中添加油酸在255℃下反应90分钟，采用热溶液注射法首次成功合成了高质量的单分散CuFeSe2纳米晶。 X 射线衍射、电子显微镜和成分分析的表征表明，所得的 CuFeSe2 纳米晶体是具有化学计量组成的四方相。 CuFeSe2纳米晶呈现出明确的准立方形状，平均尺寸约为18 nm，并且可以通过调整反应参数将其形状从准立方体调整为准球形。磁测量表明，所合成的 CuFeSe2 纳米晶体分别在 4 和 300 K 下具有铁磁性和顺磁性。此外，CuFeSe2 纳米晶体的电流电压（IV）行为表明它们是光电和太阳能转换应用的有希望的候选者。
Monodisperse CuFeSe2 nanocrystals of high quality have been successfully synthesized for the first time using a hot-solution injection method from the reaction of metallic acetylacetonates with diphenyl diselenide (Ph2Se2) in oleylamine with addition of oleic acid at 255 degrees C for 90 min. The characterizations of X-ray diffraction, electron microscopy, and compositional analysis reveal that the resulting CuFeSe2 nanocrystals are of tetragonal phase with a stoichiometric composition. The CuFeSe2 nanocrystals exhibit well-defined quasi-cubic shape with an average size of similar to 18 nm, and their shape can be tuned from quasi-cubes to quasi-spheres by adjusting the reaction parameters. Magnetic measurement reveals that the as-synthesized CuFeSe2 nanocrystals are ferromagnetic and paramagnetic at 4 and 300 K, respectively. Additionally, the currentvoltage (IV) behavior of the CuFeSe2 nanocrystals suggests that they are promising candidates for application in optoelectronics and solar energy conversion.