Effect of structure and interlayer diffusion in organic position sensitive photodetectors based on complementary wedge donor/acceptor layers
Por:
Cabanillas-Gonzalez J., Schmidt M., Peia-Rodríguez O., Alonso M.I., Goii A.R., Campoy-Quiles M.
Publicada:
1 ene 2013
Resumen:
We have developed organic photodetectors based on two complementary wedge layers made of CuPc and C60 and observed a strong spatial dependence of the spectral response on the position of the incident light spot. Photocurrent measurements are correlated with atomic force microscopy (AFM), micro-Raman and ellipsometry maps in order to provide insights into the local donor/acceptor concentration, layer thickness and nature of the donor-acceptor interface along the direction of the thickness gradient. Deviations in spatial dependence between experimental photocurrent values and those predicted with a model assuming a sharp and well defined organic- organic interface are discussed in terms of inter-diffusion layers. Copyright © 2013 American Scientific Publishers All rights reserved.
|