Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells

Brian Maynard; Qi Long; Eric A. Schiff; Mengjin Yang; Kai Zhu; Ranjith Kottokkaran; Hisham Abbas; Vikram L. Dalal

doi:10.1063/1.4948344

Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells

Brian Maynard, Qi Long, Eric A. Schiff, Mengjin Yang, Kai Zhu, Ranjith Kottokkaran, Hisham Abbas, Vikram L. Dalal

Department of Physics

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

61 Scopus citations

Abstract

We report nanosecond domain time-of-flight measurements of electron and hole photocarriers in methylammonium lead iodide perovskite solar cells. The mobilities ranged from 0.06 to 1.4 cm²/Vs at room temperature, but there is little systematic difference between the two carriers. We also find that the drift mobilities are dispersive (time-dependent). The dispersion parameters are in the range of 0.4-0.7, and they imply that terahertz domain mobilities will be much larger than nanosecond domain mobilities. The temperature-dependences of the dispersion parameters are consistent with confinement of electron and hole transport to fractal-like spatial networks within nanoseconds of their photogeneration.

Original language	English (US)
Article number	173505
Journal	Applied Physics Letters
Volume	108
Issue number	17
DOIs	https://doi.org/10.1063/1.4948344
State	Published - Apr 25 2016

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4948344

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title = "Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells",

abstract = "We report nanosecond domain time-of-flight measurements of electron and hole photocarriers in methylammonium lead iodide perovskite solar cells. The mobilities ranged from 0.06 to 1.4 cm2/Vs at room temperature, but there is little systematic difference between the two carriers. We also find that the drift mobilities are dispersive (time-dependent). The dispersion parameters are in the range of 0.4-0.7, and they imply that terahertz domain mobilities will be much larger than nanosecond domain mobilities. The temperature-dependences of the dispersion parameters are consistent with confinement of electron and hole transport to fractal-like spatial networks within nanoseconds of their photogeneration.",

author = "Brian Maynard and Qi Long and Schiff, {Eric A.} and Mengjin Yang and Kai Zhu and Ranjith Kottokkaran and Hisham Abbas and Dalal, {Vikram L.}",

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T1 - Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells

AU - Maynard, Brian

AU - Long, Qi

AU - Schiff, Eric A.

AU - Yang, Mengjin

AU - Zhu, Kai

AU - Kottokkaran, Ranjith

AU - Abbas, Hisham

AU - Dalal, Vikram L.

PY - 2016/4/25

Y1 - 2016/4/25

N2 - We report nanosecond domain time-of-flight measurements of electron and hole photocarriers in methylammonium lead iodide perovskite solar cells. The mobilities ranged from 0.06 to 1.4 cm2/Vs at room temperature, but there is little systematic difference between the two carriers. We also find that the drift mobilities are dispersive (time-dependent). The dispersion parameters are in the range of 0.4-0.7, and they imply that terahertz domain mobilities will be much larger than nanosecond domain mobilities. The temperature-dependences of the dispersion parameters are consistent with confinement of electron and hole transport to fractal-like spatial networks within nanoseconds of their photogeneration.

AB - We report nanosecond domain time-of-flight measurements of electron and hole photocarriers in methylammonium lead iodide perovskite solar cells. The mobilities ranged from 0.06 to 1.4 cm2/Vs at room temperature, but there is little systematic difference between the two carriers. We also find that the drift mobilities are dispersive (time-dependent). The dispersion parameters are in the range of 0.4-0.7, and they imply that terahertz domain mobilities will be much larger than nanosecond domain mobilities. The temperature-dependences of the dispersion parameters are consistent with confinement of electron and hole transport to fractal-like spatial networks within nanoseconds of their photogeneration.

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Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells

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