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Very-high-efficiency double-heterostructure copper phthalocyanine/C60 photovoltaic cells
Abstract
We demonstrate an external power conversion efficiency of (3.6±0.2)% under AM1.5 spectral illumination of 150 mW/cm2 (1.5 suns) with vacuum-deposited copper phthalocyanine/C60 thin-film double-heterostructure photovoltaic cells incorporating an exciton-blocking layer (EBL). We show that the anode work function influences the photocarrier collection characteristics through the built-in electric field. The cell parameters are less sensitive to the cathode work function, which is attributed to cathode-induced defect states in the EBL energy gap. The presence of these defect states also explains the surprisingly low resistance of the EBL to electron transport. We anticipate significant further improvements in power conversion efficiency by employing optimal structures in light-trapping geometries.
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Citations
Cited by
Small molecular weight organic thin-film photodetectors and solar cells
Peumans, P., Yakimov, A., & Forrest, S. R. (2003) · Journal of Applied Physics · doi:10.1063/1.1534621 · Cited by 2,731
Self-citationCharge Photogeneration in Organic Solar Cells
Clarke, T. M., & Durrant, J. R. (2010) · Chemical Reviews · doi:10.1021/cr900271s · Cited by 2,372
Small molecule semiconductors for high-efficiency organic photovoltaics
Lin, Y., Li, Y., & Zhan, X. (2012) · Chemical Society Reviews · doi:10.1039/c2cs15313k · Cited by 1,751
Roquet, S., Cravino, A., Leriche, P., Alévêque, O., Frère, P., & Roncali, J. (2006) · Journal of the American Chemical Society · doi:10.1021/ja058178e · Cited by 787
Near-infrared phosphorescence: materials and applications
Xiang, H., Cheng, J., Ma, X., Zhou, X., & Chruma, J. J. (2013) · Chemical Society Reviews · doi:10.1039/c3cs60029g · Cited by 720
Metadata
- Authors
- Peumans, P., & Forrest, S. R.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2001-07-02
- Volume
- 79
- Issue
- 1
- Pages
- 126-128
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1972486813
- Cited by
- 1,044
- References
- 0
- FWCI
- 41.40
- Type
- journal article
- Language
- en
- Open access
- closed
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