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Dimension reduction...
Dimension reduction of thermistor models for large-area organic light-emitting diodes
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- Glitzky, Annegret (författare)
- Weierstrass Institute for Applied Analysis and Stochastics, DEU
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- Liero, Matthias (författare)
- Weierstrass Institute for Applied Analysis and Stochastics, DEU
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- Nika, Grigor (författare)
- Weierstrass Institute for Applied Analysis and Stochastics, DEU
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(creator_code:org_t)
- American Institute of Mathematical Sciences, 2021
- 2021
- Engelska.
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Ingår i: Discrete and Continuous Dynamical Systems. Series S. - : American Institute of Mathematical Sciences. - 1937-1632 .- 1937-1179. ; 14:11, s. 3953-3971
- Relaterad länk:
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https://www.aimscien...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
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- An effective system of partial differential equations describing the heat and current flow through a thin organic light-emitting diode (OLED) mounted on a glass substrate is rigorously derived from a recently introduced fully three-dimensional $p(x)$-Laplace thermistor model. The OLED consists of several thin layers that scale differently with respect to the multiscale parameter $ε>0$, which is the ratio between the total thickness and the lateral extent of the OLED. Starting point of the derivation is a rescaled formulation of the current-flow equation in the OLED for the driving potential and the heat equation in OLED and glass substrate with Joule heat term concentrated in the OLED. Assuming physically motivated scalings in the electrical flux functions, uniform a priori bounds are derived for the solutions of the three-dimensional system which facilitates the extraction of converging subsequences with limits that are identified as solutions of a dimension reduced system. In the latter, the effective current-flow equation is given by two semilinear equations in the two-dimensional cross-sections of the electrodes and algebraic equations for the continuity of the electrical fluxes through the organic layers. The effective heat equation is formulated only in the glass substrate with Joule heat term on the part of the boundary where the OLED is mounted.
Ämnesord
- NATURVETENSKAP -- Matematik -- Matematisk analys (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Mathematical Analysis (hsv//eng)
Nyckelord
- Dimension reduction
- Joule heat
- Multi-scale limit
- Organic light-emitting diode
- Thermistor system
- Thin-film devices
- Matematik
- Mathematics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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