- Title
- Low-Temperature CVD-Grown Graphene Thin Films as Transparent Electrode for Organic Photovoltaics
- Creator
- Ali, Alaa Y.; Holmes, Natalie P.; Zhou, Xiaojing; Ameri, Mohsen; Feron, Krishna; Thameel, Mahir N.; Barr, Matthew G.; Fahy, Adam; Holdsworth, John; Belcher, Warwick; Dastoor, Paul
- Relation
- Coatings Vol. 12, Issue 5, no. 681
- Publisher Link
- http://dx.doi.org/10.3390/coatings12050681
- Publisher
- MDPI AG
- Resource Type
- journal article
- Date
- 2022
- Description
- Good conductivity, suitable transparency and uniform layers of graphene thin film can be produced by chemical vapour deposition (CVD) at low temperature and utilised as a transparent electrode in organic photovoltaics. Using chlorobenzene trapped in poly(methyl methacrylate) (PMMA) polymer as the carbon source, growth temperature (Tgrowth) of 600 °C at hydrogen (H2) flow of 75 standard cubic centimetres per minute (sccm) was used to prepare graphene by CVD catalytically on copper (Cu) foil substrates. Through the Tgrowth of 600 °C, we observed and identified the quality of the graphene films, as characterised by Raman spectroscopy. Finally, P3HT (poly (3-hexylthiophene-2, 5-diyl)): PCBM (phenyl-C61-butyric acid methyl ester) bulk heterojunction solar cells were fabricated on graphene-based window electrodes and compared with indium tin oxide (ITO)-based devices. It is interesting to observe that the OPV performance is improved more than 5 fold with increasing illuminated areas, hinting that high resistance between graphene domains can be alleviated by photo generated charges.
- Subject
- graphene thin film; low-temperature CVD; organic photovoltaics; Raman spectroscopy; SDG 7; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1487028
- Identifier
- uon:52029
- Identifier
- ISSN:2079-6412
- Rights
- x
- Language
- eng
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