Growth and Properties of CH3NH3PbI3 Single Crystal

Organic-inorganic hybrid perovskites CH 3 NH 3 PbI 3 single crystals were grown by inversion crystallization with GBL solvent. The structural, thermal properties and morphology of CH 3 NH 3 PbI 3 crystal were characterized using PXRD, FT-IR, TG/DTA and TEM methods. The results shows the CH 3 NH 3 PbI 3 single crystals were of tetragonal phase with lattice constants a = b = 8.8526 Å and c = 12.6523 Å. The peaks of FT-IR spectrum were assigned. Thermal decomposition mechanism of CH 3 NH 3 PbI 3 in the temperature range of 25–800 °C were analyzed. HRTEM shows that the crystal grown is of good quality and dendritic crystallization was observed using GBL as solvent.