# Extraction of built-in potential of organic diodes from current-voltage characteristics

## TL;DR

This paper develops a physics-based analytical method to extract the built-in potential of organic diodes from their current-voltage characteristics, validated through simulations and experiments.

## Contribution

It introduces a novel analytical approach for determining the built-in potential directly from $J$-$V$ data in organic diodes, improving accuracy over previous methods.

## Key findings

- The method accurately extracts $V_{bi}$ from simulated data.
- Experimental validation shows good agreement with reported $V_{bi}$ values.
- The approach enhances understanding of charge transport in organic diodes.

## Abstract

Physics based analytic equations for charge carrier profile and current density are derived by solving the carrier transport and the continuity equations for metal-intrinsic semiconductor-metal diodes. Using the analytic models a physics based method is developed to extract the built-in potential $V_{bi}$ from current density-voltage ($J$-$V$) characteristics. The proposed method is thoroughly validated using numerical simulation results. After verifying the applicability of the proposed theory on experimentally fabricated organic diodes, $V_{bi}$ is extracted using the present method showing a good agreement with the reported value.