Ultrafast Terahertz Photoconductivity of Bulk Heterojunction Materials Reveals High Carrier Mobility up to Nanosecond Time Scale
Journal of the American Chemical Society2012Vol. 134(29), pp. 11836–11839
Citations Over TimeTop 10% of 2012 papers
Carlito S. Ponseca, Arkady Yartsev, Ergang Wang, Mats R. Andersson, Dimali A. Vithanage, Villy Sundström
Abstract
The few-picosecond (ps) decay of terahertz (THz) photoconductivity typically observed for conjugated polymer:fullerene blends (at excitation fluencies ~10(15) photons/cm(2) per pulse) is shown to be a result of charge pair annihilation for two polymer:PCBM blends. At a factor of 100 lower excitation density, the THz decay is in the hundreds of ps time scale, implying that very high carrier mobility (~0.1 cm(2) V(-1) s(-1)) prevails for long time after charge formation, of importance for free charge formation in organic solar cells.
Related Papers
- → Charge carrier mobility of halide perovskite single crystals for ionizing radiation detection(2021)39 cited
- → Metal–Organic Framework Photoconductivity via Time-Resolved Terahertz Spectroscopy(2019)58 cited
- → Observation of Two-Photon Conductivity in GaAs with Nanosecond and Picosecond Light Pulses(1972)87 cited
- → Effect of Thermal Annealing on the Charge Carrier Mobility in a Polymer Electroluminescent Device(2006)1 cited
- → Charge carrier mobility in disordered organic blends(2010)