TY - JOUR
T1 - Picosecond Transient Photoconductivity in Functionalized Pentacene Molecular Crystals Probed by Terahertz Pulse Spectroscopy
AU - Hegmann, F. A.
AU - Tykwinski, R. R.
AU - Lui, K. P.H.
AU - Bullock, J. E.
AU - Anthony, J. E.
PY - 2002
Y1 - 2002
N2 - We have measured transient photoconductivity in functionalized pentacene molecular crystals using ultrafast optical pump–terahertz probe techniques. The single crystal samples were excited using 800 nm, 100 fs pulses, and the change in transmission of time-delayed, subpicosecond terahertz pulses was used to probe the photoconducting state over a temperature range from 10 to 300 K. A subpicosecond rise in photoconductivity is observed, suggesting that mobile carriers are a primary photoexcitation. At times longer than 4 ps, a power-law decay is observed consistent with dispersive transport.
AB - We have measured transient photoconductivity in functionalized pentacene molecular crystals using ultrafast optical pump–terahertz probe techniques. The single crystal samples were excited using 800 nm, 100 fs pulses, and the change in transmission of time-delayed, subpicosecond terahertz pulses was used to probe the photoconducting state over a temperature range from 10 to 300 K. A subpicosecond rise in photoconductivity is observed, suggesting that mobile carriers are a primary photoexcitation. At times longer than 4 ps, a power-law decay is observed consistent with dispersive transport.
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U2 - 10.1103/PhysRevLett.89.227403
DO - 10.1103/PhysRevLett.89.227403
M3 - Article
C2 - 12485104
AN - SCOPUS:0037175887
SN - 0031-9007
VL - 89
JO - Physical Review Letters
JF - Physical Review Letters
IS - 22
ER -