Date : 2013. 3. 21, 4:30 PM Place : Mogam Hall, Bldg.500 -Abstract- Various metal oxides including Zn, In and Ga oxides have come into the spotlight as innovative semiconductor that has the potential to drive the future of the information technology industry. They have unique processing merits such as low temperature and solution processibility as well as show the excellent electrical performance in TFT, solar cell and piezoelectric device. Herein, we introduce the solution-processed ZnO semiconductor and show the various applications toward the future flexible devices. In particular, the electrical generation of all-solution-processed flexible piezoelectric nanogenerator, which was composed with polycrystalline ZnO thin film and functional polymer layers such as P3HT/PCBM and PEDOT:PSS, was demonstrated through mechanical rolling and muscle stretching system to show the feasibility as a piezoelectric patchable device.