Hybrid perovskites with the ability to control spin, charge, and light could establish a new semiconductor technology that is especially useful for optoelectronic devices. While CH3NH3PbI3 (methylammonium lead triiodide, or MAPbI) can easily be solution-processed, the same is not true for hybrid perovskites comprising larger, more complex organic molecules that have incompatible solubility with metal halides.
Alternatively, vapor-phase deposition of organic precursors can introduce degradation and make stoichiometric deposition with inorganic precursors more difficult. However, resonant infrared, matrix-assisted pulsed laser evaporation (RIR-MAPLE), a versatile thin-film deposition technique that features aspects of both solution-based and vapor-phase deposition, enables a wide variety of hybrid perovskite thin films that can be difficult to achieve otherwise.
This talk will review the development of RIR-MAPLE growth of hybrid perovskite thin films, demonstrating application to 3D MAPbI and 2D hybrid perovskites (such as oligothiophene- and phenethyl ammonium-based metal halide perovskites).
Adrienne Stiff-Roberts is Jeffrey N. Vinik Professor of Electrical and Computer Engineering at Duke University, where she is also the Associate Dean for Community-Based Innovation and Director of Graduate Studies for the University Program in Materials Science and Engineering. Dr. Stiff-Roberts received a B.S. in physics from Spelman College (1999), a B.E.E. in electrical engineering from Georgia Tech (1999), and an M.S.E. in electrical engineering (2001) and a Ph.D. in applied physics (2004) from the University of Michigan, Ann Arbor.
Her research interests include synthesizing multi-component and hybrid (organic-inorganic) materials using a novel approach for organic-based thin film deposition that combines solution- and vacuum- processing. Known as resonant infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE), this technique uniquely integrates novel functions into organic-based films and devices that are difficult, if not impossible, to achieve otherwise.