Silicon nanowires covered with on-site fabricated nanowire-shape graphene for Schottky junction solar cells

Wallace, Steaphan M.; Jevasuwan, Wipakorn; Fukata, Naoki

doi:10.1016/j.solener.2021.06.040

Cited by 7 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorbed light is increased and the short-circuit current density and power conversion efficiency are consequently increased as the graphene layer is added, due to its high absorption properties. On the other hand, adding Au NPs increased the absorbed light according to Equations ( 5) and (6). To compare between the given two structures, The resultant short-circuit current density and the power conversion efficiency for each structure are given in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the proposed solar cell structure is compared to other structures in the literature, fabricated structures as in [1,5,6,13] and analytical analysis work as in [14], as illustrated in Table 8. The proposed structure does not give the maximum open-circuit voltage, 0.63 V, or FF, 0.73; however, it produces a high short-circuit current density, 41.7 mA/cm 2 , and consequently a high value of the power conversion efficiency, 19.0%.…”

Section: Optical Power Distributionmentioning

confidence: 99%

“…This process produced a high open-circuit voltage value, V oc , and high fill factor, FF, which lead to producing higher overall efficiency, µ, of the solar cell for high values of short-circuit current density, J sc . However, we still need to increase the value of the J sc , which can be obtained by using an absorber layer, such as graphene, C [6]. For its good electric properties, as a thin and highly transparent material, graphene has been greatly used in recent research [7].…”

Section: Introductionmentioning

confidence: 99%

“…A SiNW solar cell grown on a silicon base and covered with an on-site graphene layer for Schottky junction was introduced by Wallace et al [6]. The graphene layer increased the carrier collection and enhanced the solar cell efficiency to be 3.83%.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 11 illustrates the optical power distribution on the four different monitoring layers for all proposed solar cells, traditional SiNWs, SiNWs with C layer, SiNWs with AuNPs, and SINWs with C and Au NPs.Figure11a, monitoring layer 1, shows the effect of the graphene layer on the top of NWs; it behaves like a nanoantenna, which retransmits the optical power into the active layer. Au NPs absorb the optical power on the substrate surface, as clearly shown in monitoring 2 with Au NPs; however, monitoring layers 3 and 4 have the same effect.Finally, the proposed solar cell structure is compared to other structures in the literature, fabricated structures as in[1,5,6,13] and analytical analysis work as in[14], as illustrated in Table8. The proposed structure does not give the maximum open-circuit voltage, 0.63 V, or FF, 0.73; however, it produces a high short-circuit current density, 41.7 mA/cm 2 , and consequently a high value of the power conversion efficiency, 19.0%.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Light Harvesting in Silicon Nanowires Solar Cells by Using Graphene Layer and Plasmonic Nanoparticles

Elrashidi

2022

Applied Sciences

View full text Add to dashboard Cite

In this work, a silicon nanowire solar cell for efficient light harvesting in the visible and near-infrared regions is introduced. In this structure, the silicon nanowires (SiNWs) are coated with a graphene layer and plasmonic nanoparticles are distributed on the top surface of the silicon substrate layer. The proposed structure is simulated using the finite difference time domain (FDTD) method to determine the performance of the solar cell by calculating the open-circuit voltage, fill factor, short-circuit current density, and power conversion efficiency. The absorbed light energy is compared for different nanoparticle materials, namely Au, Ag, Al, and Cu, and Au NPs give the best performance. Different values of the radius of the Au NP are simulated, namely 30, 40, 50, and 60 nm, to determine the optimum radius, and the effect of excess carrier concentration on the solar cell performance is also tested. The obtained open-circuit voltage is 0.63 V, fill factor is 0.73, short-circuit current density is 41.7 mA/cm2, and power conversion efficiency is 19.0%. The proposed SiNW solar cell improves the overall efficiency by almost 60%. Furthermore, the effects of the NW length and distance between NWs are also studied in this work. Finally, the distribution of the optical power in different layers along the solar cell and for different solar cell structures is also illustrated in this paper.

show abstract

Section: Resultsmentioning

confidence: 99%