Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals

Dong Shi, Valerio Adinolfi, Riccardo Comin, Mingjian Yuan, Erkki Alarousu, Andrei K. Buin, Yin Chen, Sjoerd H. Hoogland, Alexander Rothenberger, Khabiboulakh Katsiev, Yaroslav B. Losovyj, Xin Zhang, Peter A. Dowben, Omar F. Mohammed, E. H. Sargent, Osman Bakr

Research output: Contribution to journalArticlepeer-review

3900 Scopus citations


The fundamental properties and ultimate performance limits of organolead trihalide MAPbX3(MA = CH3NH3 +; X = Br- or I- ) perovskites remain obscured by extensive disorder in polycrystalline MAPbX3 films. We report an antisolvent vapor-assisted crystallization approach that enables us to create sizable crack-free MAPbX3 single crystals with volumes exceeding 100 cubic millimeters. These large single crystals enabled a detailed characterization of their optical and charge transport characteristics.We observed exceptionally low trap-state densities on the order of 109 to 1010 per cubic centimeter in MAPbX3 single crystals (comparable to the best photovoltaic-quality silicon) and charge carrier diffusion lengths exceeding 10 micrometers. These results were validated with density functional theory calculations.
Original languageEnglish (US)
Pages (from-to)519-522
Number of pages4
Issue number6221
StatePublished - Jan 29 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-11-009-21
Acknowledgements: We thank N. Kherani, B. Ramautarsingh, A. Flood, and P. O'Brien for the use of the Hall setup. Supported by KAUST (O.M.B.) and by KAUST award KUS-11-009-21, the Ontario Research Fund Research Excellence Program, and the Natural Sciences and Engineering Research Council of Canada (E.H.S.).

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