Each thin film solar cell would have a different band gap which means that if part of the solar spectrum was not absorbed by the first cell then the one just below would be able to absorb part of the spectrum.
If this structure is used to trap light and keep it in the structure until the solar cell can absorb it, the efficiency of the solar cell could be increased dramatically. The wavelength this device captures can be selected by changing the structure of the lattice which comprises the structure.
This has also been a goal of the thin film solar cells. Using a selective contact, the lower energy electrons and holes can be collected while allowing the higher energy ones to continue moving through the cell.
This would help by utilizing a larger area of the surface of the solar cell for light scattering and absorption. The lattice structure in each of the thin film cells needs to be the same. The processes used for depositing the layers are complex. The plasmonic-optical effects could: If the electrons and holes can be collected while hot, a higher voltage can be obtained from the cell.
Light trapping in plasmonic solar cells Citation Ferry, Vivian Eleanor Light trapping in plasmonic solar cells. We begin by developing computational tools to analyze incoupling from sunlight to guided modes across the solar spectrum and a range of incident angles.
The simultaneously plasmon-optical and plasmon-electrical effects of nanoparticles reveal a promising feature of nanoparticle plasmon. The losses due to this are not as effective because the differences in lattices allows for more optimal band gap material for the first two cells.
This is a loss for the cell because the incoming photons are not converted into usable energy. Light trapping[ edit ] As discussed earlier, being able to concentrate and scatter light across the surface of the plasmonic-enhanced solar cell will help to increase efficiencies. Plasmonic-electrical solar cells[ edit ] Having unique features of tunable resonances and unprecedented near-field enhancement, plasmon is an enabling technique for light management.
The hot carrier cells are in their infancy but are beginning to move toward the experimental stage. These results demonstrate the feasibility and prospect of achieving high-efficiency ultra-thin silicon wafer cells with plasmonic light trapping.
H solar cells, which must be made less than optically thick to enable complete carrier collection. The topological insulator nanostructure has intrinsically core-shell configuration.The scattering from metal nanoparticles near their localized plasmon resonance is a promising way of increasing the light absorption in thin-film solar cells.
Enhancements in photocurrent have been observed for a wide range of semiconductors and solar cell configurations. We review experimental and theoretical progress that has been made in recent years, describe the basic mechanisms at work. A comprehensive study of the plasmonic thin-film solar cell with the periodic strip structure is presented in this paper.
The finite-difference frequency-domain method is employed to discretize the inhomogeneous wave function for modeling the solar cell. In particular, the hybrid absorbing boundary condition and the one-sided difference scheme are adopted. Abstract: Plasmonic effects have been proposed as a solution to overcome the limited light absorption in thin-film photovoltaic devices, and various types of plasmonic solar cells have been developed.
This review provides a comprehensive overview of the state-of. A plasmonic-enhanced solar cell is a type of solar cell (including thin-film, crystalline silicon, amorphous silicon, and other types of cells) that convert light into electricity with the assistance of plasmons.
PLASMONIC SOLAR CELLS Plasmonic solar cells (SCs) have great potential to drive down the cost of solar power. To make SC a viable energy source, trapping of light is crucial for thin fi lm SCs. So, plasmonic nanoparticles could be used to increase the effi ciency of thin fi lm SCs.
The second part of this thesis describes the integration of plasmonic nanos- tructures with a-Si:H solar cells, showing that designed nanostructures can lead to enhanced photocurrent over randomly textured light trapping surfaces, and develops a computational model to accurately simulate the absorption in these structures.Download