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

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 cm{sup 2}/Vs at room temperature, but there is little systematic difference between the two carriers. We also find t...

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Veröffentlicht in:	Applied physics letters 2016-04, Vol.108 (17)
Hauptverfasser:	Maynard, Brian, Long, Qi, Schiff, Eric A., Yang, Mengjin, Zhu, Kai, Kottokkaran, Ranjith, Abbas, Hisham, Dalal, Vikram L.
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Sprache:	eng
Schlagworte:	CARRIERS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CONFINEMENT DISPERSIONS FRACTALS HOLES LEAD IODIDES MOBILITY PEROVSKITE SOLAR CELLS TEMPERATURE DEPENDENCE TEMPERATURE RANGE 0273-0400 K TIME DEPENDENCE TIME-OF-FLIGHT METHOD
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description	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 cm{sup 2}/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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subjects	CARRIERS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CONFINEMENT DISPERSIONS FRACTALS HOLES LEAD IODIDES MOBILITY PEROVSKITE SOLAR CELLS TEMPERATURE DEPENDENCE TEMPERATURE RANGE 0273-0400 K TIME DEPENDENCE TIME-OF-FLIGHT METHOD
title	Electron and hole drift mobility measurements on methylammonium lead iodide perovskite solar cells
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