Abstract
Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.
| Original language | English |
|---|---|
| Pages (from-to) | 1105-1112 |
| Number of pages | 8 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 35 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 1 2018 |
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ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics
Cite this
Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach. / Valagiannopoulos, Constantinos; Lagoudakis, Pavlos G.
In: Journal of the Optical Society of America B: Optical Physics, Vol. 35, No. 5, 01.05.2018, p. 1105-1112.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach
AU - Valagiannopoulos, Constantinos
AU - Lagoudakis, Pavlos G.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.
AB - Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.
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UR - http://www.scopus.com/inward/citedby.url?scp=85046648773&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.35.001105
DO - 10.1364/JOSAB.35.001105
M3 - Article
VL - 35
SP - 1105
EP - 1112
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
SN - 0740-3224
IS - 5
ER -