Controlling nucleation and growth of metal halide perovskite thin films for high-Efficiency perovskite solar cells
Small Wiley 13:14 (2017) 1-8
Abstract:
Metal halide perovskite thin films can be crystallized via a broad range of solution-based routes. However, the quality of the final films is strongly dependent upon small changes in solution composition and processing parameters. Here, this study demonstrates that a fractional substitution of PbCl2 with PbI2 in the 3CH3 NH3 I:PbCl2 mixed-halide starting solution has a profound influence upon the ensuing thin-film crystallization. The presence of PbI2 in the precursor induces a uniform distribution of regular quadrilateral-shaped CH3 NH3 PbI3 perovskite crystals in as-cast films, which subsequently grow to form pinhole-free perovskite films with highly crystalline domains. With this new formulation of 3CH3 NH3 I:0.98PbCl2 :0.02PbI2 , this study achieves a 19.1% current-voltage measured power conversion efficiency and a 17.2% stabilized power output in regular planar heterojunction solar cells.Near-neutral-colored semitransparent perovskite films using a combination of colloidal self-assembly and plasma etching
Solar Energy Materials and Solar Cells Elsevier 160 (2017) 193-202
ZrO2/TiO2 Electron Collection Layer for Efficient Meso-Superstructured Hybrid Perovskite Solar Cells
ACS Applied Materials & Interfaces American Chemical Society (ACS) 9:3 (2017) 2342-2349
Electron injection and scaffold effects in perovskite solar cells
Journal of Materials Chemistry C Royal Society of Chemistry (RSC) 5:3 (2017) 634-644
Unraveling the exciton binding energy and the dielectric constant in single crystal methylammonium lead tri-iodide perovskite
(2017)