http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Keiichi Ikegami,Hitoshi Ohnuki,Mitsuru Izumi 한국물리학회 2006 Current Applied Physics Vol.6 No.4
The gate-voltage-dependence of the drain currentvoltage characteristics have been measured for organic eld-eect transistors(OFETs) based on thick and thin LangmuirBlodgett (LB) lms of octadecyl tetracyano quino dimethane. The obtained results haveindicated that the eld-eect doping phenomena in OFETs with thick and thin LB lms are basically the same with each other. Atheoretical approach based on a simple four-layer model has also be taken to obtain basic understanding of the eld-eect dopingphenomenon in OFETs. Through this approach, it has been suggested that when the organic semiconductor layer is extremely thin,the total amount of the doped charge,Q, deviates from the prediction of the well-known threshold relationship,Q / (VG . Vth),whereVG and Vthare the gate voltage and its threshold value, respectively, but the charges are still localized in the interface regionlike in the case of OFETs with thick semiconductor layers.
Dye aggregates formed in Langmuir-Blodgett films of amphiphilic merocyanine dyes
Keiichi Ikegami 한국물리학회 2006 Current Applied Physics Vol.6 No.4
The electronic absorption spectra of pure Langmuir (L) lms of 6MeDS prepared upon MgCl2, CaCl2, CdCl2, and CuCl2 aque-ous solutions have shown that the Mg2+,Ca2+, and Cd2+ cations promote the J-aggregation of the dye, but the Cu2+ cation inhibitsit. Instead, the Cu2+ cation promotes the formation of another type of dye aggregate (D-aggregate), which exhibits a split electronicabsorption band. These L lms have been transferred onto solid substrates by the LangmuirBlodgett (LB) technique. The vibronicabsorption spectra observed for the obtained LB lms have shown the similarity between the metalcation-containing J-aggregateand the metal-free J-aggregate of the dye, the latter of which was characterized in the previous study [K. Ikegami, J. Chem. Phys. 121(2004) 2337]. These spectra have also indicated that the bimolecular metal chelation plays an important role in the J-aggregation,like the intermolecular hydrogen bonding in the metal-free case.