New Approaches to Light Trapping in Solar Cell Devices discusses in detail the use of photonic and plasmonic effects for light trapping in solar cells. It compares and contrasts texturing, the current method of light-trapping design in solar cells, with emerging approaches employing photonic and plasmonic phenomena. These new light trapping methods reduce the amount of absorber required in a solar cell, promising significant cost reduction and efficiency.
This book highlights potential advantages of photonics and plasmonics and describes design optimization using computer modeling of these approaches. Its discussion of ultimate efficiency possibilities in solar cells is grounded in a review of the Shockley-Queisser analysis; this includes an in-depth examination of recent analyses building on that seminal work.
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- Chapter 1: A Brief Overview of Phenomena Involved in Light Trapping
- 1.1. Interference
- 1.2. Scattering
- 1.3. Reflection
- 1.4. Diffraction
- 1.5. Plasmonics
- 1.6. Refraction
- Chapter 2: Modes and Hybridization
- 2.1. Introductory comments
- 2.2. Radiation modes
- 2.3. Trapped traveling modes: guided modes
- 2.4. Trapped traveling modes: Bloch modes
- 2.5. Trapped localized modes: Mie modes and plasma modes
- Chapter 3: Light-Trapping Structures
- 3.1. Introduction
- 3.2. Planar structures with ARCs
- 3.3. Planar structures with randomly textured surfaces
- 3.4. Structures with nanoelement arrays
- 3.5. Structures with plasmonic effects
- Chapter 4: Summary
- 4.1. The current picture
- 4.2. Some future directions?
- 4.3. Overview
- Appendix A: Yablonovitch Limit Derivation
- Appendix B: Fresnel Equations for the Situation of Section 2.2
- Appendix C: Index of Refraction, Permittivity, and Absorption Coefficient