Title :
Charge generation in polythiophene organic solar cell blend films
Author :
Cook, Steffan ; Furube, Akihiro ; Katoh, Ryuzi
Author_Institution :
Active State Research Group, Research Institute for Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, 305-8565 Ibaraki, Japan
Abstract :
Here we present transient absorption studies of a common conjugated polymer component used in organic solar cells, P3HT, which suggests that at least partly, light absorption in the polymer layer leads to the direct formation of free charges much like that in silicon. The mechanism for free charge formation in P3HT shall be discussed along with a comparison of P3HT with traditional silicon devices to explain their up to now poor sunlight conversion efficiencies.
Keywords :
Absorption; Excitons; Laser excitation; Photovoltaic cells; Polymers; Probes; Pulse amplifiers; Pump lasers; Solar power generation; Ultrafast optics;
Conference_Titel :
Photovoltaic Specialists Conference, 2008. PVSC '08. 33rd IEEE
Conference_Location :
San Diego, CA, USA
Print_ISBN :
978-1-4244-1640-0
Electronic_ISBN :
0160-8371
DOI :
10.1109/PVSC.2008.4922723
