Inside Cover, Volume 113, Issue 23



Thermal effects improve bipolaron mobility and the overall system conductivity in conjugated polymers. When thermal effects are taken into account by Marcos Andre Pereira dos Santos, Wiliam Ferreira da Cunha, Pedro Henrique de Oliveira Neto, and Geraldo Magela e Silva on page 2540, the initially trapped bipolaron becomes able to respond to the external electric field applied. By releasing the upper bipolaron, a chain reaction takes place, affecting the other charge carriers. This results in a system with the highest possible conductivity, as all the quasi-particles are free to move after the collisional process.