Preface - to be supplied by H.Naito 1 Electronic Structures of Organic Semiconductors Kazuyoshi Tanaka 2 Charge carrier transport Hiroyoshi Naito 3 Theory of Optical Properties of Organic Semiconductors Jai Singh, Monishka Rita Narayan and David Ompong 4 Light absorption and emission properties of organic semiconductors Takashi Kobayashi, Takashi Nagase, and Hiroyoshi Naito 5 Photoluminescence Spectroscopy Hiroyoshi Naito 6 Time-of-flight method for determining the drift mobility in organic semiconductors Masahiro Funahashi 7 Microwave and Terahertz Spectroscopy Akinori Saeki 8 Intrinsic and extrinsic transport in crystalline organic semiconductors: electron-spin-resonance study for characterization of localized states. A. S. Mishchenko 9 Second Harmonic Generation Spectroscopy Takaaki Manaka and Mitsumasa Iwamoto 10 Device Physics of organic field-effect transistors Hiroyuki Matsui 11 Spontaneous orientation polarization in organic light-emitting diodes and its influence on charge injection, accumulation, and degradation properties Yutaka Noguchi, Hisao Ishii, Lars Jäger, Tobias D. Schmidt, Wolfgang Brütting 12 Advanced molecular design for organic light emitting diode emitters based on horizontal molecular orientation and thermally activated delayed fluorescence Li Zhao, DaeHyeon Kim, Jean-Charles Ribierre, Takeshi Komino and Chihaya Adachi 13 Organic field effect transistors integrated circuits Mayumi Uno 14 Naphthobisthiadiazole-based semiconducting polymers for high-efficiency organic photovoltaics Itaru Osaka and Kazuo Takimiya 15 Plasmonics for light-emitting and photovoltaic devices Koichi Okamoto