A direct deposition methodology has been optimized for highly crystalline inorganic-organic (IO) perovskite thin films. The simplest deposition ensures long-range order with high c-oriented thin films, thicknesses ranging from ultra-thin (~20nm) and upto 1.5 µm. These self-assembled layered perovskites are naturally aligned alternative stacking arrangement of inorganic and organic monolayers, resemble multiple quantum wells (MQWs), which offers superior optoelectronic properties such as room-temperature optical excitons, strong electrically induced photo-carrier mobilities etc.
The established fabrication is having device-compatible advantage over other conventional solution–processed thin films wherein the optical features are restricted by thickness limitations (<200nm) and with possible corrugated surface morphologies with multi-phases. The universally acceptable ability has been demonstrated for wide varieties of organic moieties (R) as well as different lead halide networks in type (R-NH3)2PbX4 (X = I, Br,Cl).The potential of the direct deposition methodology for demonstrated in 3D template structure fabrication as well as in photocurrent response capability.
© 2014 Optical Society of America
Ahmad, S., Hanmandlu, C., Kanaujia, P.K. and Prakash, G.V., 2014. Direct deposition strategy for highly ordered inorganic organic perovskite thin films and their optoelectronic applications. Optical Materials Express, 4(7), pp.1313-1323.
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