TY - JOUR
T1 - Ultrafast carrier dynamics in pentacene, functionalized pentacene, tetracene, and rubrene single crystals
AU - Ostroverkhova, O.
AU - Cooke, D. G.
AU - Hegmann, F. A.
AU - Anthony, J. E.
AU - Podzorov, V.
AU - Gershenson, M. E.
AU - Jurchescu, O. D.
AU - Palstra, T. T.M.
N1 - Funding Information:
This work was supported by NSERC, CIPI, ONR, iCORE, and the Killam Trust.
PY - 2006/4/17
Y1 - 2006/4/17
N2 - We measure the transient photoconductivity in pentacene, functionalized pentacene, tetracene, and rubrene single crystals using optical pump-terahertz probe techniques. In all of the samples studied, we observe subpicosecond charge photogeneration and a peak photoconductive response that increases as the temperature decreases from 297 down to 20 K, indicative of bandlike transport. Similar decay dynamics are observed at room temperature, but at low temperatures the decay dynamics measured in pentacene, rubrene, and tetracene crystals are much faster than those observed in functionalized pentacene crystals, revealing different charge trapping properties.
AB - We measure the transient photoconductivity in pentacene, functionalized pentacene, tetracene, and rubrene single crystals using optical pump-terahertz probe techniques. In all of the samples studied, we observe subpicosecond charge photogeneration and a peak photoconductive response that increases as the temperature decreases from 297 down to 20 K, indicative of bandlike transport. Similar decay dynamics are observed at room temperature, but at low temperatures the decay dynamics measured in pentacene, rubrene, and tetracene crystals are much faster than those observed in functionalized pentacene crystals, revealing different charge trapping properties.
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U2 - 10.1063/1.2193801
DO - 10.1063/1.2193801
M3 - Article
AN - SCOPUS:33646178593
SN - 0003-6951
VL - 88
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 16
M1 - 162101
ER -