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Enhancing InGaN-based solar cell efficiency through localized surface plasmon interaction by embedding Ag
Jyh-Yang Wang1, Fu-Ji Tsai, Jeng-Jie Huang
1Department of Electrical Engineering, National Taiwan University, Institute of Photonics and Optoelectronics, No 1, Roosevelt Road, Section 4, Taipei 10617, Taiwan.
Optics Express
|February 23, 2010
Summary
Embedding silver nanoparticles (Ag NPs) into indium gallium nitride (InGaN) solar cells enhances light absorption and boosts efficiency by up to 27%. This method improves InGaN solar cell performance without significantly impacting carrier transport.
Area of Science:
- Materials Science
- Nanotechnology
- Photovoltaics
Background:
- Indium gallium nitride (InGaN) is a key material for solar cells.
- Enhancing light absorption near the band edge is crucial for improving solar cell efficiency.
- Localized surface plasmon (LSP) interactions offer a potential pathway for optical enhancement.
Purpose of the Study:
- To numerically demonstrate the enhancement of InGaN absorption and solar cell efficiency using embedded silver nanoparticles (Ag NPs).
- To investigate the impact of LSP resonance and NP scattering on light absorption.
- To evaluate the effect of embedded Ag NPs on carrier transport and photocurrent.
Main Methods:
- Numerical simulation of InGaN-based solar cells with embedded Ag NPs.
- Analysis of LSP resonance and electromagnetic field distribution.
- Modeling of photo-generated carrier transport and photocurrent.
Main Results:
- Embedded Ag NPs significantly enhance InGaN absorption near the band edge via LSP resonance and scattering.
- Ag NP embedment causes minimal negative impact on photo-generated carrier transport, with only a few percent decrease in photocurrent.
- Solar cell efficiency can be enhanced by up to 27% with Ag NP embedment, outperforming surface deposition methods.
Conclusions:
- Embedding Ag NPs in the InGaN absorbing layer is an effective strategy to boost solar cell efficiency.
- The LSP effect from Ag NPs enhances light absorption without compromising carrier transport significantly.
- This approach offers a substantial efficiency improvement for InGaN-based solar cells compared to conventional methods.
