Light extraction limits in textured GaN-InGaN light-emitting diodes: Radiative transfer analysis
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(Color online) (a) The escaping photon flux normalized by πq 0 with the specular BC χ = 0 as a function of the optical thickness for the isotropic emission Δ = ∞ (solid line) and for the anisotropic emission with Δ = 3/4 (dashed line). Also shown are the fluxes with the diffuse BC χ = 1 for Δ = ∞ (dotted line) and Δ = 3/4 (dash-dotted line). The fluxes in (a) and (b) are normalized by πq 0. (b) The difference in the fluxes with χ = 1 and χ = 0 for Δ = ∞ (solid line) and Δ = 3/4 (dashed line). (c) The ratio of the fluxes, i.e., the enhancement factor with χ = 1 and χ = 0 for Δ = ∞ (solid line) and Δ = 3/4 (dashed line).
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