The purpose of this paper is to discuss the fabrication of $eta$-PVDF($eta$-Polyvinylidene fluoride, ${eta}-PVF_2$) organic thin films through the vapor deposition method and to investigate the piezoelectric properties of the organic thin films produced. Vapor deposition was performed under the following conditions : the temperature of evaporator, the applied electric field and the pressure of reaction chamber were $270^{circ}C$, 142.4 kV/cm and $2.0{ imes}10^{-5}Torr$, respectively. The results showed that the amount of $eta$-form PVDF increased from 72 % to 95.5 % with an increase in the substrate temperature. In the case of a sensor response characteristic by varying the force moment from $1.372{ imes}10^{-5}N{cdot}m$ to $39.2{ imes}10^{-5}N{cdot}m$, the output voltage increased from 1.39V to 7.04V.