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A physical model for simulating plasmonic solar cells (SCs) using the SILVACO TCAD simulator is establisled and the effects of some factors on the efficiency enhancement of the amorphous silicon thin film SCs are simulated.Through this simulation,it is demonstrated that our method can successfully simulate the optical and electrical properties of plasmonic solar cells without the overestimation of the characteristics and without the neglect of parameter change in the device operation process.It is shown that not only the size and kind of metal nanoparticles but also other factors,such as the surrounding medium,the distance from the bottom of particles to the device surface,and the light incident angle,play important roles in the optical and electrical properties of plasmonic SCs.