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Spectroscopic Study of Electric Field Induced Optical Second Harmonic Generation from PCPDTBT and PC71BM Thin Films

Ibrahim M. ALROUGY, Dai TAGUCHI, Takaaki MANAKA

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Summary :

Electric field induced optical second harmonic generation (EFISHG) measurement at the laser wavelength of 1000nm and 1080nm is conducted to investigate the carrier behaviors in PCPDTBT and PC71BM bulk heterojunction organic solar cells (OSCs). We find that the response time for electrode charging through the external circuit in +1V and -1V are almost identical but the response time for the Maxwell-Wagner-type interfacial charging is different in +1V or -1V. We find that the accumulated charges of PC71BM is more than the accumulated charges of PCPDTBT and consequently affects the efficiency of the bulk heterojunction OSCs.

Publication
IEICE TRANSACTIONS on Electronics Vol.E102-C No.2 pp.119-124
Publication Date
2019/02/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.2018OMP0007
Type of Manuscript
Special Section PAPER (Special Section on Recent Progress in Organic Molecular Electronics and Biotechnology)
Category

Authors

Ibrahim M. ALROUGY
  Tokyo Institute of Technology,King Abdulaziz City for Science and Technology
Dai TAGUCHI
  Tokyo Institute of Technology
Takaaki MANAKA
  Tokyo Institute of Technology

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