Hybrid Chalcopyrite-Polymer Magnetoconducting Materials.
The search for emerging materials combining magnetic and semiconducting properties has attracted widespread interest in contemporary materials science. Chalcopyrite (CuFeS2), as an earth abundant and nontoxic chalcogenide compound in the I-III-VI2 family, is a promising class of such materials that exhibit unusual electrical, optical, and magnetic properties. However, its successful implementation largely depends on our ability to understand, control and manipulate their structural, transport and spin behavior. Here we show that solution processing monodispersed CuFeS2 quantum dots exhibit a strong coupling among optical, electronic, and magnetic degrees of freedom. The photoresponse and magnetoconductance of CuFeS2 quantum dots are realized under external stimuli. We further exploit a fast and efficient way to achieve an exceptionally large performance in a magneto-optoelectronic hybrid system consisting of magnetic semiconducting CuFeS2 and conducting polymer matrix. The results demonstrate a promising potential of magnetic semiconductor CuFeS2 in the field of spin electronics.
Department of Mechanical Engineering, Temple University , Philadelphia, Pennsylvania 19122, United States.
Zhuolei
Z
Zhang
Department of Mechanical Engineering, Temple University , Philadelphia, Pennsylvania 19122, United States.
Beibei
B
Xu
Department of Mechanical Engineering, Temple University , Philadelphia, Pennsylvania 19122, United States.
Lin
L
Zhang
Department of Mechanical Engineering, Temple University , Philadelphia, Pennsylvania 19122, United States.
Shenqiang
S
Ren
magnetic semiconductor; magnetism; nanocrystals; optoelectronics; organic−inorganic hybrid materials