Electron and hole mobility in solution-processed small molecule-fullerene blend: Dependence on the fullerene content

Aung Ko Ko Kyaw, Dong Hwan Wang, Hsin-Rong Tseng, Jie Zhang, Guillermo C. Bazan, and Alan J. Heeger

The authors present a study of electron and hole mobility in blends of the solution-processed small molecule (DTS(PTTh₂)₂):fullerene as a function of the fullerene content. The mobilities are measured using the Field–Effect Transistor device configuration with the blend as the material in the channel.

Appl. Phys. Lett. 102, 163308 (2013) | HTML | PDF

Spectral response tuning using an optical spacer in broad-band organic solar cells

Yuliang Zhang, Ajay K. Pandey, Chen Tao, Yuan Fang, Hui Jin, Paul L. Burn, and Paul Meredith

The effect of a zinc oxide optical spacer layer in broad-band polymer-fullerene solar cells is presented. The complimentary absorption in the donor and acceptor components allows photocurrent generation through photoinduced electron and hole-transfer mechanisms.

Appl. Phys. Lett. 102, 013302 (2013) | HTML | PDF

Localizing trapped charge carriers in NO₂ sensors based on organic field-effect transistors

Anne-Marije Andringa, W. S. Christian Roelofs, Michael Sommer, Mukundan Thelakkat, Martijn Kemerink, and Dago M. de Leeuw

This work explores the properties (location) of trapped electrons in field-effect transistors, as alternative detectors of NO₂ polutants. All three experiments using different organic semiconductors resulted to charges being trapped at the gate dielectric.

Appl. Phys. Lett. 101, 153302 (2012) | HTML | PDF