Erratum: “Efficiency limit and example of a photonic solar cell” [J. Appl. Phys.110, 043104 (2011)]
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Ideal optical characteristics of a photonic solar cell in the form of a Bragg-like system with an average refractive index of n = 1.5. An ideal Bragg-like system is defined by an angular characteristic which follows the Bragg condition [see Eq. (7)]. The cause for this characteristic is the bandgap in the photonic band structure of the idealized Bragg-like structure. Such a system can be used to create a directionally selectively emitting device if the edge of the PBG for normal incidence and the electrical bandgap of the solar cell coincide. For normal incidence, the photonic structure allows all light to pass, which can be absorbed by the solar cell. In that way, the absorption of the solar cell is not affected. Light under oblique incidence close to the band-edge, however, will be blocked due to the blue-shift of the PBG (black region). Therefore, the emission of light close to the electric band-edge of the solar cell is influenced.
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