Charge transport in a two-dimensional hybrid metal halide thiocyanate compound

被引:36
作者
Labram, John G. [1 ,2 ]
Venkatesan, Naveen R. [1 ,2 ]
Takacs, Christopher J. [1 ,2 ]
Evans, Hayden A. [1 ,2 ,3 ,4 ]
Perry, Erin E. [1 ,2 ]
Wudl, Fred [1 ,2 ,3 ,4 ]
Chabinyc, Michael L. [1 ,2 ,3 ]
机构
[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
[2] Univ Calif Santa Barbara, Mitsubishi Chem Ctr Adv Mat, Santa Barbara, CA 93106 USA
[3] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA
[4] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA
基金
美国国家科学基金会;
关键词
PEROVSKITE SOLAR-CELLS; EXCITON BINDING-ENERGY; CARRIER RECOMBINATION; HIGH-PERFORMANCE; EFFECTIVE MASSES; LIGHT; EFFICIENT; DYNAMICS; PLANAR; METHYLAMMONIUM;
D O I
10.1039/c7tc01161j
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Solution-processable organic metal halide compounds, such as methylammonium lead iodide (CH3NH3PbI3), possess unique optical and electronic properties such as long carrier lifetimes and high charge carrier mobility. Here we study a layered, 2-dimensional hybrid halide compound: methylammonium lead thiocyanate iodide ((CH3NH3)(2)Pb(SCN)(2)I-2). Films deposited from solution are observed to grow with strong preferential alignment of 2-dimensional layers parallel to the substrate. The charge-transport properties of carriers in the 2-dimensional planes of (CH3NH3) Pb-2(SCN)(2)I-2 were measured using the contactless electronic characterization technique time-resolved microwave conductivity (TRMC). TRMC measurements show that the sum of the electron and hole charge carrier mobilities in (CH3NH3)(2)Pb(SCN)(2)I-2 is above 1 cm(2) V-1 s(-1) and that the carrier lifetime is relatively long.
引用
收藏
页码:5930 / 5938
页数:9
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