Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Organic-inorganic halide perovskite (OIHP) compounds are extremely interesting material for device application in for instance solar cells, electro-optics and electronic circuits. We still have the number of open questions for stability of OIHPs. In this report, we investigated OIHPs reported as CH3NH3PbI3-xClx and CH3NH3PbI3 prepared from solution in combination with mesoporous TiO2 electrodes. A long term conversion from disordered to crystalline OIHPs was observed. The results suggest that the material reported as CH3NH3PbI3-xClx is a combination of the OIHPs such as CH3NH3PbI3 and CH3NH3PbCl3. Moreover the results suggest that the inclusion of Cl affects the growth direction of the CH3NH3PbI3 perovskite. The crystal structure and exact nature of the material is important for the understanding and optimization of devices, and these results will therefore be important to further improve and explain their properties. Particularly, we study thermal stability of those OIHPs in given period and will talk for more detail.
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