Charge transport in a two-dimensional hybrid metal halide thiocyanate compound. Issue 24 (1st June 2017)

• Record Type: Journal Article
• Authors: Labram, John G.; Venkatesan, Naveen R.; Takacs, Christopher J.; Evans, Hayden A.; Perry, Erin E.; Wudl, Fred; Chabinyc, Michael L.
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 24(2017)
• Page Start: 5930
• Page End: 5938
• Publication Date: 2017-06-01
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc01161j
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Time-resolved microwave conductivity reveals good carrier mobility and long carrier lifetimes in the layered organic metal halide compound (CH3 NH3 )2 Pb(SCN)2 I2 . Abstract : Solution-processable organic metal halide compounds, such as methylammonium lead iodide (CH3 NH3 PbI3 ), 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 ((CH3 NH3 )2 Pb(SCN)2 I2 ). 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 (CH3 NH3 )2 Pb(SCN)2 I2 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 (CH3 NH3 )2 Pb(SCN)2 I2 is above 1 cm 2 V −1 s −1 and that the carrier lifetime is relatively long.