Health & Environmental Research Online (HERO)


Print Feedback Export to File
7164619 
Journal Article 
Intrinsic Thermal Instability of Methylammonium Lead Trihalide Perovskite 
Conings, B; Mosconi, E; De Angelis, F; Boyen, HG; Drijkoningen, J; Gauquelin, N; Babayigit, A; D'Haen, Jan; D'Olieslaeger, L; Ethirajan, A; Verbeeck, Jo; Manca, J; , 
2015 
WILEY-V C H VERLAG GMBH 
WEINHEIM 
WOS:000359374900005 
Organolead halide perovskites currently are the new front-runners as light absorbers in hybrid solar cells, as they combine efficiencies passing already 20% with deposition temperatures below 100 degrees C and cheap solution-based fabrication routes. Long-term stability remains a major obstacle for application on an industrial scale. Here, it is demonstrated that significant decomposition effects already occur during annealing of a methylammonium lead triiode perovskite at 85 degrees C even in inert atmosphere thus violating international standards. The observed behavior supports the view of currently used perovskite materials as soft matter systems with low formation energies, thus representing a major bottleneck for their application, especially in countries with high average temperatures. This result can trigger a broader search for new perovskite families with improved thermal stability.