F. Haque, S. Lim, and M. Mativenga, “Perovskite Thin Film Transistors,” IMID 2018, BEXCO, Busan, Korea, August 28 – 31 (2018). > Conference Papers

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Hybrid organic-inorganic perovskites have emerged as an important new class of materials for photovoltaics and optoelectronic device applications. They exhibit high optical absorption in the visible region, [1,2] sharp band edges, low trap densities [3] and high charge-carrier diffusion lengths – coupled with long charge-carrier lifetimes [4]. In addition, these materials allow for a range of versatile processing techniques. Although application of perovskite materials in optoelectronic devices has rapidily progressed, application in thin film transistors (TFTs) is still challenging [5-7]. This study investigates the semiconducting properties of a hybrid organic-inorganic perovskite, methylammonia lead iodide (CH3NH4PbI3) for TFT applications. In particular, the organic (CH3NH4I):inorganic (PbI2) ratio is found to significantly influence electrical conductivity of CH3NH4PbI3 (see for instance Fig. 1). The presentation will also cover the impact of varying the organic:inorganic ratio on chemical and physical properties of the hybrid perovskite