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P-N junction

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...

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Updated: Feb 26, 2026

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Published on: July 2, 2012

Solid-State Plasmonic Solar Cells.

Kosei Ueno¹, Tomoya Oshikiri¹, Quan Sun¹

¹Research Institute for Electronic Science , Hokkaido University , Sapporo 001-0021 , Japan.

Chemical Reviews

|July 25, 2017

Summary

This summary is machine-generated.

Metallic nanoparticles with localized surface plasmon resonances (LSPRs) enhance solar cells. Mechanisms include light scattering, near-field enhancement, and plasmon-induced charge separation, improving light-matter interactions for energy conversion.

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Area of Science:

Nanotechnology
Materials Science
Renewable Energy

Background:

Metallic nanoparticles exhibit localized surface plasmon resonances (LSPRs), leading to significant near-field enhancement.
LSPRs enable strong light-matter interactions, with tunable resonant wavelengths for visible and near-infrared light.
LSPRs are explored as optical antennae for light energy conversion systems, particularly solar cells.

Purpose of the Study:

To review and clarify the mechanisms by which LSPRs enhance plasmonic solid-state solar cells.
To focus on light scattering, near-field enhancement, and plasmon-induced charge separation as key enhancement mechanisms.
To analyze these mechanisms from a physics perspective rather than a material science focus.

Main Methods:

Review of existing scientific literature on plasmonic solar cells.
Analysis of LSPR decay pathways, including light scattering and electron-hole pair excitation.
Categorization of enhancement effects based on optical and charge separation mechanisms.

Main Results:

LSPRs contribute to solar cell enhancement through light scattering, which redirects light within the cell.
Near-field enhancement generated by LSPRs increases light absorption in the active layer.
Plasmon-induced charge separation, arising from electron-hole pair excitation, offers an additional pathway for energy conversion.

Conclusions:

The decay of LSPRs, often considered a loss mechanism, can be harnessed for solar cell efficiency.
Understanding LSPR mechanisms is crucial for designing advanced plasmonic solar cells.
This review provides a framework for optimizing solar cells by leveraging plasmonic light-matter interactions.