1. Asymptotic analysis of double-carrier, space-charge- limited transport in organic light-emitting diodes by Sarah E. Feicht, Ory Schnitzer, and Aditya S. Khair Proceedings A Volume 469(2158):20130263 October 8, 2013 ©2013 by The Royal Society

2. Holes are injected through the anode with a flux j+, whereas electrons are injected through the cathode with a flux j−; the fluxes will be determined in the proceeding analysis. Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society

3. Asymptotic solutions for the electric field in the space-charge layer (dash), the intermediate layer (dash-dot) and in the bulk (dot) are compared with the numerical solution (open circles) of the electric field in the anodic region () for =0.001 and V =50. Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society

4. Numerical solutions for the (a) hole density (circle) and (b) electron density (square) at =0.001 and V =50 are compared with asymptotic expressions for the hole and electron densities in the space-charge layer (dash), intermediate layer (dash-dot) and bul... Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society

5. The asymptotic solutions (dash) for electric potential are compared to the numerical solution (symbols). Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society

6. The asymptotic expression for current (5.3) (line) are compared with the numerical results at =0.001 (circle), =0.005 (square) and =0.01 (triangle). Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society

7. The leading-order total recombination rate R=4k2V 2 (line) is compared with the numerical solution of the drift–diffusion equations (circle) as a function of recombination rate constant k at V =50 and =0.001. Sarah E. Feicht et al. Proc. R. Soc. A 2013;469:20130263 ©2013 by The Royal Society