کنفرانس مهندسی برق ایران

صفحه اصلی / بیست و نهمین کنفرانس مهندسی برق ایران

A Thin-Film SIS Solar Cell Based on Distributed Silicon Nanoparticles

نویسندگان :

Mohammad Ali Shameli¹ Sayyed Reza Mirnaziry² Leila Yousefi³

1- دانشگاه تهران 2- پارک علم و فناوری دانشگاه تهران 3- دانشگاه تهران

کلمات کلیدی :

Solar cell, Thin-film, Silicon nanospheres

چکیده :

In this paper, a new type of solar cell with silicon nanospheres is proposed to trap and confine sunlight in the structure. The silicon nanospheres are distributed periodically and randomly inside the active layer and contribute in generating the electron-hole pairs via their resonances. To investigate the absorption in the proposed solar cell we use the generalized Mie theory, together with a three-dimensional full-wave simulator for validation. Using the analytical model and the simulation we show that solar cells with random nanospheres not only have easy fabrication but also a higher absorption in comparison to the conventional cells with equivalent volume. Moreover, the short circuit current of the new cell is increased by the factors of 3.42 and 3.45 for TM and TE polarizations, respectively. In addition, the numerical results show that the short circuit current enhancement in the random distribution leads to an extra 10% improvement in comparison to the periodic one.