کنفرانس مهندسی برق ایران

صفحه اصلی / سی امین کنفرانس بین المللی مهندسی برق

Impact of Particle Shape on Optical and Electrical Properties of Ultrathin Silicon Solar Cells

نویسندگان :

Sayyed Reza Mirnaziry¹ Mohammad Ali Shameli² Leila Yousefi³

1- UTS 2- دانشگاه تهران 3- دانشگاه تهران

کلمات کلیدی :

Ultrathin solar cell, silicon nanoparticle, absorption, efficiency, nanosphere

چکیده :

We study the effect of particle shape on the optical and electrical response of ultrathin silicon solar cells. In a particle-based cell, wherein nanoparticles form the cell absorber, the electrical operation of the cell is subjected to geometrical limitations. Assuming that doped silicon nanoparticles with predefined shapes are distributed on a silicon layer to form the cell junction, it is shown that existing a sufficiently large contact area between the nanoparticle and its adjacent layer has a significant effect on transport of the photo-generated carriers. We show that despite having interesting absorption, a cell comprising pure spherical silicon particles has a relatively weak power conversion efficiency. We see that imperfect nanospheres as well as particles with other shapes but larger contact areas in the junction can propose higher cell efficiencies.

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