liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Transient photocurrent of bulk heterojunction solar cell characterized by ns-laser and sub-ms LED
Thammasat University, Thailand; Lund University, Sweden.
Lund University, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Lund University, Sweden.
Show others and affiliations
2015 (English)In: INTERNATIONAL CONFERENCE ON PHOTONICS SOLUTIONS 2015, SPIE-INT SOC OPTICAL ENGINEERING , 2015, Vol. 9659, no UNSP 96591CConference paper (Refereed)Text
Abstract [en]

We measure the transient photocurrent of APFO3:PCBM bulk heterojunction solar cells illuminated with ns-laser and sub-ms LED light sources. The ratio of the number of collective charges to the number of excited photon (external quantum efficiency, EQE) and the transient photocurrent fall times have been carried out with difference pulse durations and fluences. The EQEs characterized by ns-laser source are shown to obey the bimolecular recombination at high excitation fluences. The increasing of transient photocurrent fall times suggests that the fall times of free charge carriers are effected by deep trap density of state (DoS) and thus the free charge carriers have a sufficient time for bimolecular recombination at short circuit condition. At the same fluences, however, the EQEs characterized by sub-ms LED sources exhibit an excitation fluences independence of EQE. The transient photocurrent fall times with sub-ms LED sources are rather constant when the excitation fluences increases indicating that the deep trap DoS has less effect at short circuit condition for longer pulse duration.

Place, publisher, year, edition, pages
SPIE-INT SOC OPTICAL ENGINEERING , 2015. Vol. 9659, no UNSP 96591C
Series
, Proceedings of SPIE, ISSN 0277-786X ; 9659
Keyword [en]
Transient photocurrent; Organic Solar Cells; Bulk heterojunction; APFO3
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:liu:diva-124148DOI: 10.1117/12.2195857ISI: 000366498800046ISBN: 978-1-62841-875-0OAI: oai:DiVA.org:liu-124148DiVA: diva2:896733
Conference
International Conference on Photonics Solutions (ICPS)
Available from: 2016-01-22 Created: 2016-01-19 Last updated: 2016-01-22

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tang, ZhengInganäs, Olle
By organisation
Biomolecular and Organic ElectronicsFaculty of Science & Engineering
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 100 hits
ReferencesLink to record
Permanent link

Direct link