@article{CTT100642817,
  author = {Y. Ohshima and N. Hirako and H. Kohn and T. Manaka and M. Iwamoto and E. Lim and H. Sirringhaus},
  title = {Direct Observation of Electron Transit in Ambipolar Polymer-Based Light-Emitting Transistor by Optical Second Harmonic Generation Measurement},
  journal = {Physics Procedia},
  year = 2011,
}

@article{CTT100642835,
  author = {Y. Ohshima and H. Satou and N. Hirako and H. Kohn and T. Manaka and M. Iwamoto},
  title = {Direct Observation of Carrier Behavior Leading to Electroluminescence in Tetracene Field-Effect Transistor},
  journal = {Jpn. J. Appl. Phys.},
  year = 2011,
}