Annealing effects on interfacial electronic structures and photoexcitation kinetics of regioregular poly(3-hexylthiophene) film on gold
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(0) (0 Votes)Views: (2009) Date: (Publication Date: Apr 2007) Pages: () -
Author: Sohn Youngku Stuckless J. Todd Department of Chemistry University of British Columbia Vancouver British Columbia V6T 1Z1 Canada and AMPEL Laboratories University of British Columbia Vancouver British Columbia V6T 1Z1 Canada;
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Abstract: Abstract The authors have studied annealing effects on the interfacial electronic structures and long-lived photoexcitation kinetics of poly(3-hexylthiophen e-2,5-diyl) (P3HT) on gold, in comparison with poly[2-methoxy-5-(2' -ethyl-hexyloxy)-1,4 -phenylene vinylene], using two-photon photoemission spectroscopy. Their studies show dramatic annealing effects on the two-photon photoemission yield and the kinetics of long-lived photoexcitations of P3HT. The interfacial electronic structures also strongly depend on the thermal annealing condition. Upon annealing P3HT, the photoemission yield is enhanced by two orders of magnitude, and the work function decreases by 1.0 eV.
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