Enhancement of Photocurrent Generation in Amorphous Silicon Heterojunction (SHJ) Solar Cells through the Integration of Plasmonic Nanoparticles

Gold (Au) nanoparticles were meticulously deposited onto the indium tin oxide (ITO) layer of silicon heterojunction solar cells through the pulsed laser deposition method. This innovative technique allowed for precise control over the density of the nanoparticles by adjusting the number of laser pulses applied during the deposition process. The primary focus of this study is to investigate the effects of Au nanoparticles on the photovoltaic characteristics of the solar cells, with a specific emphasis on the short-circuit current. The findings of this research indicate that a notable enhancement in the short-circuit current—approximately 5.5%—was achieved when applying six laser pulses. This optimal enhancement highlights the delicate interplay between the deposition parameters and the resultant photovoltaic performance. Additionally, both the surface density and the average size of the Au nanoparticles were identified as significant factors influencing the generated photocurrent. In essence, this research emphasizes the critical importance of nanoparticle density and size in optimizing the performance of silicon heterojunction solar cells. The insights garnered from this study not only deepen our understanding of the role of metal nanoparticles in photovoltaic applications but also pave the way for the refinement of solar cell designs. By considering these factors, researchers and engineers can make informed decisions to enhance the efficiency and output of solar cells, ultimately contributing to advancements in renewable energy technology.