Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 7, Issue 7, Pages 2269-2275Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ee01358a
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Funding
- Engineering and Physical Sciences Research Council
- Engineering and Physical Sciences Research Council [EP/G049653/1, EP/F065884/1, EP/L024667/1] Funding Source: researchfish
- EPSRC [EP/F065884/1, EP/G049653/1, EP/L024667/1] Funding Source: UKRI
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We determine high charge-carrier mobilities >= 33 cm(2) V-1 s(-1) and bimolecular recombination rates about five orders of magnitude below the prediction of Langevin's model for vapour-deposited CH3NH3PbI3-xClx using ultrafast THz spectroscopy. At charge-carrier densities below similar to 10(17) cm(-3) intrinsic diffusion lengths are shown to approach 3 microns, limited by slow mono-molecular decay processes.
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