Journal ArticleDOI
Intensity enhancement in textured optical sheets for solar cells
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TLDR
In this article, the authors adopt a statistical mechanical approach toward the optics of textured and inhomogeneous optical sheets and show that the local light intensity in such a medium will tend to be 2 n−2−x times greater than the externally incident light intensity, where n is the local index of refraction in the sheet.Abstract:
We adopt a statistical mechanical approach toward the optics of textured and inhomogeneous optical sheets. As a general rule, the local light intensity in such a medium will tend to be 2 n^{2}(x) times greater than the externally incident light intensity, where n(x) is the local index of refraction in the sheet. This enhancement can contribute toward a 4 n^{2}(x) increase in the effective absorption of indirect-gap semiconductors like crystalline silicon.read more
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Journal ArticleDOI
Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.
Journal ArticleDOI
Light Trapping in Silicon Nanowire Solar Cells
Erik C. Garnett,Peidong Yang +1 more
TL;DR: It is demonstrated that ordered arrays of silicon nanowires increase the path length of incident solar radiation by up to a factor of 73, which is above the randomized scattering (Lambertian) limit and is superior to other light-trapping methods.
Journal ArticleDOI
Materials interface engineering for solution-processed photovoltaics
TL;DR: The nanometre and micrometre scale interfaces between the crystalline domains that make up solution-processed solar cells are crucial for efficient charge transport and controlling the collection and minimizing the trapping of charge carriers at these boundaries is crucial to efficiency.
Journal ArticleDOI
30% external quantum efficiency from surface textured, thin‐film light‐emitting diodes
TL;DR: In this article, the authors showed that by separating thin-film LEDs from their substrates (by epitaxial lift-off, for example), it is much easier for light to escape from the LED structure and thereby avoid absorption.
Journal ArticleDOI
Light trapping properties of pyramidally textured surfaces
Patrick Campbell,Martin A. Green +1 more
TL;DR: In this paper, the light trapping properties of textured optical sheets have become of recent interest in photovoltaic energy conversion since light trapping allows a significant reduction in the thickness of active solar cell material.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Book
Electrodynamics of continuous media
TL;DR: In this article, the propagation of electromagnetic waves and X-ray diffraction of X rays in crystals are discussed. But they do not consider the effects of superconductivity on superconducting conductors.
Journal ArticleDOI
Multiple‐pass thin‐film silicon solar cell
TL;DR: In this paper, a technique is described by which light entering a thin film is ''trapped'' in the sense of having to traverse the film a number of times, and it is shown that the use of this technique in silicon provides a solar cell with good carrier collection efficiencies even with Si only ∼2 μm thick and with ∼10nsec lifetime.
Patent
Multiple internal reflection structure in a silicon detector which is obtained by sandblasting
Patent
Light energy conversion
TL;DR: In this article, a process for the manufacture of a light energy converter involves forming of a plurality of photovoltaic sources where first bodies of a first conductivity type semiconductor material each has a surface layer of a second conductivity types material and second bodies of said second conductivities type semiconductors each have surface layers of the first body.