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Open circuit voltage enhancement due to reduced dark current in small molecule photovoltaic cells
Abstract
We demonstrate high open circuit voltage photovoltaic cells achieved by reducing the electron leakage current through the introduction of both organic and inorganic electron blocking layers between the donor layer and the anode contact. As an example, the blocking layers reduce the dark current in tin (II) phthalocyanine (SnPc)∕C60 solar cells with response across the visible and near infrared spectral region up to a wavelength of 1000nm, is decreased by two orders of magnitude compared to cells lacking the layers, resulting in a doubling of the open circuit voltage. The structure: indium tin oxide/electron blocker/SnPc (100Å)∕C60 (400Å)/bathocuproine (100Å)∕Al, has a power conversion efficiency of (2.1±0.1)% at 1sun, standard AM1.5G solar illumination. This work demonstrates the importance of reducing dark current to achieve high organic thin film photovoltaic cell efficiencies.
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Citations
Cited by
Molecular Semiconductors in Organic Photovoltaic Cells
Hains, A. W., Liang, Z., Woodhouse, M. A., & Gregg, B. A. (2010) · Chemical Reviews · doi:10.1021/cr9002984 · Cited by 935
Zhang, L., Liu, C., Lai, T., Huang, H., Peng, X., Huang, F., & Cao, Y. (2016) · Journal of Materials Chemistry A · doi:10.1039/c6ta05726h · Cited by 47
Trinh, C., Whited, M. T., Steiner, A., Tassone, C. J., Toney, M. F., & Thompson, M. E. (2012) · Chemistry of Materials · doi:10.1021/cm3012777 · Cited by 26
Metadata
- Authors
- Li, N., Lassiter, B. E., Lunt, R. R., Wei, G., & Forrest, S. R.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2009-01-12
- Volume
- 94
- Issue
- 2
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1970443860
- Cited by
- 229
- References
- 0
- FWCI
- 26.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, N., Lassiter, B. E., Lunt, R. R., Wei, G., & Forrest, S. R. (2009). Open circuit voltage enhancement due to reduced dark current in small molecule photovoltaic cells. Applied Physics Letters. https://doi.org/10.1063/1.3072807
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