Improved positive polaron stability of the p-type host for long lifetime in phosphorescent organic light-emitting diodes

Long lifetime is one of requirements for commercialization of organic light-emitting diodes (OLEDs). In this paper, we improved the device lifetime of phosphorescent OLEDs by enhancing oxidation stability of the...

Molecular design tactics enhancing negative polaron stability of p-type host for long device lifetime by fusion of carbazole with furan

A molecular design with a negative polaron stabilizing unit was developed to extend the device lifetime of blue phosphorescent organic light-emitting diodes (PhOLEDs). A novel p-type host material, 5,10-diphenyl-5,10-dihydrofuro[3,2-c:4,5-c′]dicarbazole (DBFBCzPh),...

Impact of the electron–phonon coupling symmetry on the polaron stability and mobility in organic molecular semiconductors

Schematic representation of a pentacene stack with two inter-molecular degrees of freedom.

Polaron stability in molecular semiconductors: theoretical insight into the impact of the temperature, electric field and the system dimensionality

A semi-empirical Holstein–Peierls model is used to study the temperature effects on the polaron stability in organic semiconductors at a molecular scale.

Polaron stability in semiconducting polymer neat films

We describe a spectroelectrochemical approach to accelerated electrochemical stability studies of conjugated polymers under oxidative stress. The polaron stabilities of alternating copolymers based on (i) thiophene and thiazole, namely PTTz, and (ii) bithiophene and thiazole, namely PTTTz, are compared in neat films with that of P3HT. P3HT is found to be the most stable whilst PTTz is found to be the least stable.