Electrical characteristics and efficiency of single-layer organic light-emitting diodes
Abstract
We have measured the electrical characteristics and the efficiencies of single-layer organic light-emitting diodes based on poly[2-methoxy-5-(2-ethylhexoxy)-1,4-phenylene vinylene] (MEH-PPV), with Au anodes and Ca, Al, and Au cathodes. We show that proper accounting of the built-in potential leads to a consistent description of the current-voltage data. For the case of Au and Al cathodes, the current under forward bias is dominated by holes injected from the anode and is space-charge limited with a field-dependent hole mobility. The Ca cathode is capable of injecting a space-charge-limited electron current.
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Ternary blend OSCs based on D2-D4 with PTB7 as donor and PC71BM as acceptor achieved a PCE of 8.39%, higher than binary PTB7:PC71BM OSCs (7.23%).
“A relatively higher PCE of 8.39% was obtained 147 as compared to the binary OSCs based on PTB7:PC71BM (7.23%). 148”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [148]
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Recent progress in porphyrin-based materials for organic solar cells
Mahmood, A., Hu, J.-Y., Xiao, B., Tang, A., Wang, X., & Zhou, E. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta06392c · Cited by 311 · see citing works
Zhang, M., Guo, X., Wang, X., Wang, H., & Li, Y. (2011) · Chemistry of Materials · doi:10.1021/cm2019586 · Cited by 194 · see citing works
- Authors
- Malliaras, G. G., Salem, J. R., Brock, P. J., & Scott, C.
- Affiliations
- IBM Research - Almaden (US)
- ORCID
- Malliaras, G. G.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 1998-11-15
- Volume
- 58
- Issue
- 20
- Pages
- R13411-R13414
- ISSN
- 0163-1829 (ISSN-L)
- 1095-3795
- OpenAlex
- W2047349467
- Cited by
- 663
- References
- 0
- Citations by year
- 2026: 14 · 2025: 28 · 2024: 32 · 2023: 13 · 2022: 31 · 2021: 31 · 2020: 35 · 2019: 32 · 2018: 50 · 2017: 42 · 2016: 49 · 2015: 53 · 2014: 36 · 2013: 35 · 2012: 28
- FWCI
- 8.29
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical review. B, Condensed matter (publishedVersion)
- Cambridge University Engineering Department Publications Database (submittedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
- Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
- Keywords
- organic light-emitting diodes, MEH-PPV, single-layer OLEDs, electrical properties, power efficiency, built-in potential, current-voltage characteristics, space-charge-limited current, hole injection, electron injection
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