Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length

Ayan A. Zhumekenov; Makhsud I. Saidaminov; Mohammed Haque; Erkki Alarousu; Smritakshi P. Sarmah; Murali Banavoth; Ibrahim Dursun; Xiaohe Miao; Ahmed L. Abdelhady; Tao Wu; Omar F. Mohammed; Osman Bakr

doi:10.1021/acsenergylett.6b00002

Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length

Ayan A. Zhumekenov, Makhsud I. Saidaminov, Mohammed Haque, Erkki Alarousu, Smritakshi P. Sarmah, Murali Banavoth, Ibrahim Dursun, Xiaohe Miao, Ahmed L. Abdelhady, Tao Wu, Omar F. Mohammed, Osman Bakr

Research output: Contribution to journal › Article › peer-review

786 Scopus citations

Abstract

State-of-the-art perovskite solar cells with record efficiencies were achieved by replacing methylammonium (MA) with formamidinium (FA) in perovskite polycrystalline films. However, these films suffer from severe structural disorder and high density of traps; thus, the intrinsic properties of FA-based perovskites remain obscured. Here we report the detailed optical and electrical properties of FAPbX3 (where X = Br- and I-) single crystals. FAPbX3 crystals exhibited markedly enhanced transport compared not just to FAPbX3 polycrystalline films but also, surprisingly, to MAPbX3 single crystals. Particularly, FAPbBr3 crystals displayed a 5-fold longer carrier lifetime and 10-fold lower dark carrier concentration than those of MAPbBr3 single crystals. We report long carrier diffusion lengths - much longer than previously thought - of 6.6 μm for FAPbI3 and 19.0 μm for FAPbBr3 crystals, the latter being one of the longest reported values in perovskite materials. These findings are of great importance for future integrated applications of these perovskites.

Original language	English (US)
Pages (from-to)	32-37
Number of pages	6
Journal	ACS Energy Letters
Volume	1
Issue number	1
DOIs	https://doi.org/10.1021/acsenergylett.6b00002
State	Published - 2016

Bibliographical note

KAUST Repository Item: Exported on 2021-12-13
Acknowledgements: The authors acknowledge the support of King Abdullah University of Science and Technology (KAUST) and Saudi Arabia Basic Industries Corporation (SABIC).

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10.1021/acsenergylett.6b00002

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@article{58eff99f533148999c64d32c58a8b150,

title = "Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length",

abstract = "State-of-the-art perovskite solar cells with record efficiencies were achieved by replacing methylammonium (MA) with formamidinium (FA) in perovskite polycrystalline films. However, these films suffer from severe structural disorder and high density of traps; thus, the intrinsic properties of FA-based perovskites remain obscured. Here we report the detailed optical and electrical properties of FAPbX3 (where X = Br- and I-) single crystals. FAPbX3 crystals exhibited markedly enhanced transport compared not just to FAPbX3 polycrystalline films but also, surprisingly, to MAPbX3 single crystals. Particularly, FAPbBr3 crystals displayed a 5-fold longer carrier lifetime and 10-fold lower dark carrier concentration than those of MAPbBr3 single crystals. We report long carrier diffusion lengths - much longer than previously thought - of 6.6 μm for FAPbI3 and 19.0 μm for FAPbBr3 crystals, the latter being one of the longest reported values in perovskite materials. These findings are of great importance for future integrated applications of these perovskites.",

author = "Zhumekenov, {Ayan A.} and Saidaminov, {Makhsud I.} and Mohammed Haque and Erkki Alarousu and Sarmah, {Smritakshi P.} and Murali Banavoth and Ibrahim Dursun and Xiaohe Miao and Abdelhady, {Ahmed L.} and Tao Wu and Mohammed, {Omar F.} and Osman Bakr",

note = "KAUST Repository Item: Exported on 2021-12-13 Acknowledgements: The authors acknowledge the support of King Abdullah University of Science and Technology (KAUST) and Saudi Arabia Basic Industries Corporation (SABIC).",

year = "2016",

doi = "10.1021/acsenergylett.6b00002",

language = "English (US)",

volume = "1",

pages = "32--37",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length

AU - Zhumekenov, Ayan A.

AU - Saidaminov, Makhsud I.

AU - Haque, Mohammed

AU - Alarousu, Erkki

AU - Sarmah, Smritakshi P.

AU - Banavoth, Murali

AU - Dursun, Ibrahim

AU - Miao, Xiaohe

AU - Abdelhady, Ahmed L.

AU - Wu, Tao

AU - Mohammed, Omar F.

AU - Bakr, Osman

N1 - KAUST Repository Item: Exported on 2021-12-13 Acknowledgements: The authors acknowledge the support of King Abdullah University of Science and Technology (KAUST) and Saudi Arabia Basic Industries Corporation (SABIC).

PY - 2016

Y1 - 2016

N2 - State-of-the-art perovskite solar cells with record efficiencies were achieved by replacing methylammonium (MA) with formamidinium (FA) in perovskite polycrystalline films. However, these films suffer from severe structural disorder and high density of traps; thus, the intrinsic properties of FA-based perovskites remain obscured. Here we report the detailed optical and electrical properties of FAPbX3 (where X = Br- and I-) single crystals. FAPbX3 crystals exhibited markedly enhanced transport compared not just to FAPbX3 polycrystalline films but also, surprisingly, to MAPbX3 single crystals. Particularly, FAPbBr3 crystals displayed a 5-fold longer carrier lifetime and 10-fold lower dark carrier concentration than those of MAPbBr3 single crystals. We report long carrier diffusion lengths - much longer than previously thought - of 6.6 μm for FAPbI3 and 19.0 μm for FAPbBr3 crystals, the latter being one of the longest reported values in perovskite materials. These findings are of great importance for future integrated applications of these perovskites.

AB - State-of-the-art perovskite solar cells with record efficiencies were achieved by replacing methylammonium (MA) with formamidinium (FA) in perovskite polycrystalline films. However, these films suffer from severe structural disorder and high density of traps; thus, the intrinsic properties of FA-based perovskites remain obscured. Here we report the detailed optical and electrical properties of FAPbX3 (where X = Br- and I-) single crystals. FAPbX3 crystals exhibited markedly enhanced transport compared not just to FAPbX3 polycrystalline films but also, surprisingly, to MAPbX3 single crystals. Particularly, FAPbBr3 crystals displayed a 5-fold longer carrier lifetime and 10-fold lower dark carrier concentration than those of MAPbBr3 single crystals. We report long carrier diffusion lengths - much longer than previously thought - of 6.6 μm for FAPbI3 and 19.0 μm for FAPbBr3 crystals, the latter being one of the longest reported values in perovskite materials. These findings are of great importance for future integrated applications of these perovskites.

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UR - https://pubs.acs.org/doi/10.1021/acsenergylett.6b00002

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U2 - 10.1021/acsenergylett.6b00002

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JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 1

ER -

Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length

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