Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells
We investigate the internal quantum efficiencies (IQEs) of high efficiency poly-3-hexylthiophene:[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) solar cells and find them to be lower at wavelengths where the PCBM absorbs. Because the exciton diffusion length in PCBM is too small, excitons gen...
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| Veröffentlicht in: | Nano letters 2009-12, Vol.9 (12), p.4037-4041 |
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| container_title | Nano letters |
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| creator | Burkhard, George F Hoke, Eric T Scully, Shawn R McGehee, Michael D |
| description | We investigate the internal quantum efficiencies (IQEs) of high efficiency poly-3-hexylthiophene:[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) solar cells and find them to be lower at wavelengths where the PCBM absorbs. Because the exciton diffusion length in PCBM is too small, excitons generated in PCBM decay before reaching the donor−acceptor interface. This result has implications for most state of the art organic solar cells, since all of the most efficient devices use fullerenes as electron acceptors. |
| doi_str_mv | 10.1021/nl902205n |
| format | Article |
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Because the exciton diffusion length in PCBM is too small, excitons generated in PCBM decay before reaching the donor−acceptor interface. 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Because the exciton diffusion length in PCBM is too small, excitons generated in PCBM decay before reaching the donor−acceptor interface. 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Photoelectrochemical cells</subject><subject>Solar Energy</subject><subject>Specific materials</subject><issn>1530-6984</issn><issn>1530-6992</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0EFLwzAUB_AgipvTg19AehHxUH1JmrQ96ticMFBQzyVtEulMk5m0ot_eyMZ28fRy-OX_Hn-EzjHcYCD41poSCAFmD9AYMwopL0tyuHsX2QidhLACgJIyOEYjXBYYclKM0fOjbVy3NqpXyey7aXtnk4XwXyr0rX1PtHddMh-MUV5ZFZLWJveD-UgW0Xu3GmzTt_HHizPCJ1NlTDhFR1qYoM62c4Le5rPX6SJdPj08Tu-Wqcgw9GnJGde1LDkvM8GgJoUiTIpcUilkQVUNhGVYMyZ1VnPQPANZU6BEccqlKOgEXW1y1959DvHcqmtDEy8QVrkhVDnNcM4KTKO83sjGuxC80tXat53wPxWG6q-_atdftBfb1KHulNzLbWERXG6BCI0w2gvbtGHnSIzJaZHvnWhCtXKDt7GMfxb-AlZqg6Y</recordid><startdate>20091209</startdate><enddate>20091209</enddate><creator>Burkhard, George F</creator><creator>Hoke, Eric T</creator><creator>Scully, Shawn R</creator><creator>McGehee, Michael D</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20091209</creationdate><title>Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells</title><author>Burkhard, George F ; Hoke, Eric T ; Scully, Shawn R ; McGehee, Michael D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a410t-9656fbd96694a50b28e25da7d3dad83eb02541f55df4b60f640db3032e636da83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Electric Power Supplies</topic><topic>Electron states</topic><topic>Energy</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Exact sciences and technology</topic><topic>Excitons and related phenomena</topic><topic>Fullerenes - chemistry</topic><topic>Fullerenes - radiation effects</topic><topic>Fullerenes and related materials; diamonds, graphite</topic><topic>Light</topic><topic>Materials science</topic><topic>Natural energy</topic><topic>Organoselenium Compounds - chemistry</topic><topic>Organoselenium Compounds - radiation effects</topic><topic>Photovoltaic conversion</topic><topic>Physics</topic><topic>Solar cells. 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| subjects | Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Electric Power Supplies Electron states Energy Equipment Design Equipment Failure Analysis Exact sciences and technology Excitons and related phenomena Fullerenes - chemistry Fullerenes - radiation effects Fullerenes and related materials diamonds, graphite Light Materials science Natural energy Organoselenium Compounds - chemistry Organoselenium Compounds - radiation effects Photovoltaic conversion Physics Solar cells. Photoelectrochemical cells Solar Energy Specific materials |
| title | Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells |
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