期刊
APPLIED PHYSICS LETTERS
卷 108, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4948344
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资金
- National Science Foundation [CBET-1336147, CBET-1336134]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1336147, 1336134] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1507291] Funding Source: National Science Foundation
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(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. Published by AIP Publishing.
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