915
Growth of Hybrid Metal-Organic Perovskites with Controlled Crystal Orientation

Tuesday, 15 May 2018: 17:00
Room 203 (Washington State Convention Center)
S. Ozden (Los Alamos National Lab) and A. D. Mohite (Los Alamos National Laboratory)
The organic–inorganic hybrid perovskites have gained a great attention because of their superior optoelectronic properties such as high absorption coefficient, bandgap, long carrier lifetime, electron mobility, low cost and facile deposition technique. Because of their extraordinary properties, they have been widely investigated for a variety of applications such as photovoltaics, light emitting diodes, photodetectors, thermoelectric devices, lasers and X-ray detectors. Among these applications, perovskites have made breakthrough in solar cells devices. In a short time, this class of materials has demonstrated impressive potential to achieve high conversion efficiency, which has increased from 3.5% to ~22%. The ability to control the crystal orientation of perovskites crystals is crucial for achieving directional high mobility of charge carriers in the direction of the electrodes in optoelectronic devices. However, even though there is an important progress on the synthesis of metal-halide hybrid perovskite films, it still remains a big challenge to control-over the crystal orientation and anisotropy during crystal growth. Here, we will discuss the synthesis of two-dimensional and three-dimensional perovskite films with control over crystal orientation to achieve a strong anisotropy of certain planes in the resultant thin film perovskites. We anticipate that this method could be applicable as a general method for the growth of thin film perovskites with any combination of the compounds such as cations, divalent metals, and halides, which otherwise may be limited kinetically and also will allow for the tuning of their crystalline orientation based on the desired device functionalities.