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Enhancement of the Open-Circuit Voltage and Hole Conduction of Tetraphenyl Porphyrin/C60Multilayered Photovoltaic Device by the Insertion of Oxide Hole Collection Layers
Open accessAbstract
We investigated the photovoltaic properties of organic multilayered photovoltaic devices consisting of Indium–tin-oxide (ITO)/oxide/tetraphenyl porphyrin (H2TPP, ZnTPP)/fullerene (C60)/bathocuproine (BCP)/Al structures. The open-circuit voltage V OC increases with the thickness of porphyrin layers between 10 and 30 nm. The upper limit of V OC is attributed to the built-in potential and the energy difference between the highest occupied molecular orbital (HOMO) of H2TPP and the lowest unoccupied molecular orbital (LUMO) of the C60 layer ΔE. The use of oxide hole collection layers, such as NiO and MoO3, is effective for increasing the built-in potential across the organic layers resulting in the improved V OC. The “kink” in the J–V curve observed at approximately V OC for the device with a thick H2TPP layer and the device with and without a MoO x layer is analyzed on the basis of the Poole–Frenkel and Schottky models assuming the amorphous porphyrin layers as dielectrics. The resistance of the organic layers is dominated by the field-dependent bulk resistance of H2TPP films for V
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“The V oc increased with the thickness of porphyrin layers between 10 and 30 nm.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [65]
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“NiO and MoO3 were used as oxide hole collection layers, which improved the V oc and FF.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [65]
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Metadata
- Authors
- Itoh, E., Higuchi, Y., Furuhata, D., & Shirotori, T.
- Affiliations
- Shinshu University (JP)
- Venue
- Japanese Journal of Applied Physics
- Publisher
- IOP Publishing
- Published
- 2011-01-01
- Volume
- 50
- Issue
- 1S2
- Pages
- 01BC14
- ISSN
- 0021-4922 (ISSN-L)
- 1347-4065
- OpenAlex
- W2066623218
- Cited by
- 18
- References
- 25
- Citations by year
- 2020: 1 · 2018: 2 · 2014: 3 · 2013: 4 · 2012: 7
- FWCI
- 3.36
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Japanese Journal of Applied Physics (publishedVersion)
- Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
- Physical Sciences › Chemistry › Organic Chemistry › Fullerene Chemistry and Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Keywords
- organic photovoltaic devices, tetraphenylporphyrin, C60, open-circuit voltage, oxide interlayer, nickel oxide, molybdenum trioxide, built-in potential, HOMO-LUMO energy difference, Schottky model
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