Organic semiconductor spintronics: utilizing triplet excitons in organic electronics

Organic semiconductor spintronics: utilizing triplet excitons in organic electronics.

Organic electronics now supports a rapidly growing industry, including organic light-emitting diode (OLED) displays as used in cell phone displays and upmarket TVs. This has been enabled both by successful engineering of materials and devices, and also through the design of new device architectures that allow control of electron spin. This is a rapidly moving field, and some recent advances in ...

Triplet Excitons in Organic Materials

The theory of delayed fluorescence produced in an organic material by singlet excitation through an absorbing layer is given. It is shown, that it will be reduced by a factor la.2/ ( la .+ ls) 2 due to the singlet energy transfer to such a layer, where /a the penetration depth of the exciting irradiation and Zs the diffusion lenght of the singlets. Further reduction of delayed fluorescence shou...

Organic spintronics.

Organic semiconductors are emerging materials in the field of spintronics. Successful achievements include their use as a tunnel barrier in magnetoresistive tunnelling devices and as a medium for spin-polarized current in transport devices. In this paper, we give an overview of the basic concepts of spin transport in organic semiconductors and present the results obtained in the field, highligh...

Excitons and the lifetime of organic semiconductor devices.

While excitons are responsible for the many beneficial optical properties of organic semiconductors, their non-radiative recombination within the material can result in material degradation due to the dumping of energy onto localized molecular bonds. This presents a challenge in developing strategies to exploit the benefits of excitons without negatively impacting the device operational stabili...

Excitons in Organic Molecular Crystals