A Novel Electric Field Induced Optical Second Harmonic Generation Technique for Visualizing Carrier-dynamics in Organic Electronics Materials

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  • Iwamoto Mitsumasa
    Department of Physical Electronics, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Manaka Takaaki
    Department of Physical Electronics, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Taguchi Dai
    Department of Physical Electronics, Graduate School of Science and Engineering, Tokyo Institute of Technology

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  • 電界誘起光第2次高調波法による有機エレクトロニクス材料内のキャリヤ挙動の可視化技術
  • デンカイ ユウキ ヒカリ ダイ2ジ コウチョウハホウ ニ ヨル ユウキ エレクトロニクス ザイリョウ ナイ ノ キャリヤ キョドウ ノ カシカ ギジュツ

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<p>A novel optical second harmonic generation (SHG) technique that can visualize carrier dynamics in organic materials has been developed on the basis of dielectrics physics approach. Nonlinear polarization induced in organic layers due to the presence of static electric field originated from mobile carriers is directly probed by laser irradiation along with the carrier motion. The visualized carrier dynamics is available for distinguishing carrier species, i.e., electrons and holes, and very helpful to analyze and model carrier behaviors in a variety of organic materials, and also in organic devices such as Organic transistors, Organic electroluminescence devices, Organic solar cells, Organic memory devices and so forth. On comparing with Time of Flight method, the principle of the SHG technique is discussed with some experimental examples.</p>

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