Alternative Synthesis of CuFeSe2 Nanocrystals with Magnetic and Photoelectric Properties

作者：Wang Wenliang; Jiang Jun; Ding Tao; Wang Chunde; Zuo Jian; Yang Qing^*

来源：ACS Applied Materials & Interfaces, 2015, 7(4): 2235-2241.

DOI：10.1021/am508844w

• monodisperse CuFeSe2 nanocrystal
• eskebornite ternary selenide
• magnetic property
• narrow bandgap semiconductor
• optoelectronic property
• photodetector
• organometallic synthesis

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.

• 出版日期2015-2-4
• 单位中国科学技术大学