Determination of carrier lifetime and mobility in colloidal quantum dot films via impedance spectroscopy
Impedance Spectroscopy (IS) proves to be a powerful tool for the determination of carrier lifetime and majority carrier mobility in colloidal quantum dot films. We employ IS to determine the carrier lifetime in PbS quantum dot Schottky solar cells with Al and we verify the validity of the technique...
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| Veröffentlicht in: | Applied physics letters 2014-02, Vol.104 (6) |
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| container_title | Applied physics letters |
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| creator | Rath, Arup K. Lasanta, Tania Bernechea, Maria Diedenhofen, Silke L. Konstantatos, Gerasimos |
| description | Impedance Spectroscopy (IS) proves to be a powerful tool for the determination of carrier lifetime and majority carrier mobility in colloidal quantum dot films. We employ IS to determine the carrier lifetime in PbS quantum dot Schottky solar cells with Al and we verify the validity of the technique via transient photovoltage. We also present a simple approach based on an RC model that allows the determination of carrier mobility in PbS quantum dot films and we corroborate the results via comparison with space charge limited measurements. In summary, we demonstrate the potential of IS to characterize key-to-photovoltaics optoelectronic properties, carrier lifetime, and mobility, in a facile way. |
| doi_str_mv | 10.1063/1.4865089 |
| format | Article |
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We employ IS to determine the carrier lifetime in PbS quantum dot Schottky solar cells with Al and we verify the validity of the technique via transient photovoltage. We also present a simple approach based on an RC model that allows the determination of carrier mobility in PbS quantum dot films and we corroborate the results via comparison with space charge limited measurements. 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We employ IS to determine the carrier lifetime in PbS quantum dot Schottky solar cells with Al and we verify the validity of the technique via transient photovoltage. We also present a simple approach based on an RC model that allows the determination of carrier mobility in PbS quantum dot films and we corroborate the results via comparison with space charge limited measurements. 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We employ IS to determine the carrier lifetime in PbS quantum dot Schottky solar cells with Al and we verify the validity of the technique via transient photovoltage. We also present a simple approach based on an RC model that allows the determination of carrier mobility in PbS quantum dot films and we corroborate the results via comparison with space charge limited measurements. In summary, we demonstrate the potential of IS to characterize key-to-photovoltaics optoelectronic properties, carrier lifetime, and mobility, in a facile way.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4865089</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Applied physics letters, 2014-02, Vol.104 (6) |
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| source | American Institute of Physics (AIP) Journals; Alma/SFX Local Collection |
| subjects | Applied physics CARRIER LIFETIME CARRIER MOBILITY COLLOIDS COMPARATIVE EVALUATIONS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Electrons IMPEDANCE Impedance spectroscopy LEAD SULFIDES Majority carriers NANOSCIENCE AND NANOTECHNOLOGY Optoelectronics Photovoltaic cells PHOTOVOLTAIC EFFECT QUANTUM DOTS SOLAR CELLS SPACE CHARGE SPECTROSCOPY Spectrum analysis THIN FILMS Transient photovoltage TRANSIENTS |
| title | Determination of carrier lifetime and mobility in colloidal quantum dot films via impedance spectroscopy |
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