Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics
The high transparency of graphene, together with its good electrical conductivity and mechanical robustness, enable its use as transparent electrodes in optoelectronic devices such as solar cells. While initial demonstrations of graphene-based organic photovoltaics (OPV) have been promising, realiza...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2014
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| Online Access: | http://hdl.handle.net/1721.1/87111 |
| _version_ | 1826201736577024000 |
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| author | Park, Hyesung Chang, Sehoon Smith, Matthew Gradecak, Silvija Kong, Jing |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Park, Hyesung Chang, Sehoon Smith, Matthew Gradecak, Silvija Kong, Jing |
| author_sort | Park, Hyesung |
| collection | MIT |
| description | The high transparency of graphene, together with its good electrical conductivity and mechanical robustness, enable its use as transparent electrodes in optoelectronic devices such as solar cells. While initial demonstrations of graphene-based organic photovoltaics (OPV) have been promising, realization of scalable technologies remains challenging due to their performance and, critically, poor device reproducibility and yield. In this work, we demonstrate by engineering the interface between graphene and organic layers, device performance and yield become close to devices using indium tin oxide. Our study confirms that the key issue leading to the poor performance or irreproducibility in graphene-based OPV originates from the graphene interface, and can be addressed by a simple interface modification method introduced in this work. We also show similar approach allows graphene to be used as cathode in inverted OPV geometry, thereby demonstrating the universal application of graphene as transparent conductors for both the anode and cathode. |
| first_indexed | 2024-09-23T11:55:55Z |
| format | Article |
| id | mit-1721.1/87111 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:55:55Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/871112022-10-01T07:04:00Z Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics Park, Hyesung Chang, Sehoon Smith, Matthew Gradecak, Silvija Kong, Jing Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Materials Science and Engineering Park, Hyesung Chang, Sehoon Smith, Matthew Gradecak, Silvija The high transparency of graphene, together with its good electrical conductivity and mechanical robustness, enable its use as transparent electrodes in optoelectronic devices such as solar cells. While initial demonstrations of graphene-based organic photovoltaics (OPV) have been promising, realization of scalable technologies remains challenging due to their performance and, critically, poor device reproducibility and yield. In this work, we demonstrate by engineering the interface between graphene and organic layers, device performance and yield become close to devices using indium tin oxide. Our study confirms that the key issue leading to the poor performance or irreproducibility in graphene-based OPV originates from the graphene interface, and can be addressed by a simple interface modification method introduced in this work. We also show similar approach allows graphene to be used as cathode in inverted OPV geometry, thereby demonstrating the universal application of graphene as transparent conductors for both the anode and cathode. National Science Foundation (U.S.) (MIT NSF MRSEC Grant No. 581 DMR-08-19762) Eni-MIT Solar Frontiers Center (Eni S.p.A.) 2014-05-22T19:57:13Z 2014-05-22T19:57:13Z 2013-04 2012-12 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/87111 Park, Hyesung, Sehoon Chang, Matthew Smith, Silvija Gradečak, and Jing Kong. “Interface Engineering of Graphene for Universal Applications as Both Anode and Cathode in Organic Photovoltaics.” Sci. Rep. 3 (April 2, 2013). en_US http://dx.doi.org/10.1038/srep01581 Scientific Reports Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License http://creativecommons.org/licenses/by-nc-nd/3.0/ application/pdf Nature Publishing Group Scientific Reports |
| spellingShingle | Park, Hyesung Chang, Sehoon Smith, Matthew Gradecak, Silvija Kong, Jing Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title | Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title_full | Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title_fullStr | Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title_full_unstemmed | Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title_short | Interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| title_sort | interface engineering of graphene for universal applications as both anode and cathode in organic photovoltaics |
| url | http://hdl.handle.net/1721.1/87111 |
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