The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The electrical and photoelectrical characteristics of sandwich-type devices based on regioregular head-to-tail (HT) poly(3-alkylthiophenes) (PATs) have been investigated and compared with those obtained with regiorandom polymers. Better performances have been achieved in sandwich-type devices made with regioregular polymers having a short alkyl substituent. A spectroscopic and morphological investigation of the materials have been also done.