1.
Macromol Rapid Commun
; 34(13): 1090-7, 2013 Jul 12.
Article
in English
| MEDLINE
| ID: mdl-23821335
ABSTRACT
Recently, the concept of near-infrared sensitization is successfully employed to increase the light harvesting in large-bandgap polymer-based solar cells. To gain deeper insights into the operation mechanism of ternary organic solar cells, a comprehensive understanding of charge transfer-charge transport in ternary blends is a necessity. Herein, P3HT:PCPDTBT:PCBM ternary blend films are investigated by transient absorption spectroscopy. Hole transfer from PCPDTBT-positive polarons to P3HT in the P3HT:PCPDTBT:PCBM 0.9:0.1:1 blend film can be visualized. This process evolves within 140 ps and is discussed with respect to the proposed charge-generation mechanisms.
Subject(s)
Fullerenes/chemistry , Polymers/chemistry , Thiophenes/chemistry , Electrochemical Techniques , Polymerization , Solar Energy , Spectrum Analysis
2.
Adv Mater
; 22(3): 367-70, 2010 Jan 19.
Article
in English
| MEDLINE
| ID: mdl-20217720