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Title: Accurate Measurement and Characterization of Organic Solar Cells

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
900717
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Journal Article
Resource Relation:
Journal Name: Advanced Functional Materials; Journal Volume: 16; Journal Issue: 15, 2006
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; Solar Energy - Photovoltaics

Citation Formats

Shrotriya, V., Li, G., Yao, Y., Moriarty, T., Emery, K., and Yang, Y. Accurate Measurement and Characterization of Organic Solar Cells. United States: N. p., 2006. Web. doi:10.1002/adfm.200600489.
Shrotriya, V., Li, G., Yao, Y., Moriarty, T., Emery, K., & Yang, Y. Accurate Measurement and Characterization of Organic Solar Cells. United States. doi:10.1002/adfm.200600489.
Shrotriya, V., Li, G., Yao, Y., Moriarty, T., Emery, K., and Yang, Y. Sun . "Accurate Measurement and Characterization of Organic Solar Cells". United States. doi:10.1002/adfm.200600489.
@article{osti_900717,
title = {Accurate Measurement and Characterization of Organic Solar Cells},
author = {Shrotriya, V. and Li, G. and Yao, Y. and Moriarty, T. and Emery, K. and Yang, Y.},
abstractNote = {},
doi = {10.1002/adfm.200600489},
journal = {Advanced Functional Materials},
number = 15, 2006,
volume = 16,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}
  • Fabrication and characterization of organic solar cells using shuttle-cock-type phthalocyanines were carried out. Photovoltaic properties of the solar cells with inverted structures were investigated by current density-voltage characteristics. Effects of phase transition between H and J aggregates on the photovoltaic and optical properties were investigated. The photovoltaic mechanisms, energy levels and band gap of active layers were discussed.
  • Inverted organic solar cells using shuttle cock-type phthalocyanine, semiconducting polymer and fullerenes were fabricated and characterized. Photovoltaic and optical properties of the solar cells with inverted structures were investigated by optical absorption, current density-voltage characteristics. The photovoltaic properties of the tandem organic solar cell using titanyl phthalocyanine, vanadyl phthalocyanine, poly(3-hexylthiophene) (P3HT) and [6, 6]-phenyl C{sub 61}-butyric acid methyl ester (PCBM) were improved. Effect of annealing and solvent treatment on surface morphologies of the active layer was investigated. The photovoltaic mechanisms, energy levels and band gap of active layers were discussed for improvement of the photovoltaic performance.
  • [6,6]–phenyl C{sub 61}–butyric acid methyl ester and poly(3–hexylthiophene) bulk heterojunction solar cells added with zinc–tetra–tertiary–butyl–phthalocyanine (ZnPc) were fabricated and characterized. The photovoltaic properties of the solar cells with an inverted structure were improved by the ZnPc addition, which were investigated on the bases of current density–voltage characteristics, incident photon to current conversion efficiency.
  • We present a comparison of the potential distribution along the cross section of bilayer poly(3-hexylthiophene)/1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C61 (P3HT/PCBM) solar cells, which show normal and anomalous, S-shaped current-voltage (IV) characteristics. We expose the cross sections of the devices with a focussed ion beam and measure them with scanning Kelvin probe microscopy. We find that in the case of S-shaped IV-characteristics, there is a huge potential drop at the PCBM/Al top contact, which does not occur in solar cells with normal IV-characteristics. This behavior confirms the assumption that S-shaped curves are caused by hindered charge transport at interfaces.