Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells
Abstract
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. © 2009 American Chemical Society.Citation
Burkhard GF, Hoke ET, Scully SR, McGehee MD (2009) Incomplete Exciton Harvesting from Fullerenes in Bulk Heterojunction Solar Cells. Nano Lett 9: 4037–4041. Available: http://dx.doi.org/10.1021/nl902205n.Sponsors
This work was supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST) and partially by the Global Climate Energy Project (GCEP). E.T.H. is supported by the National Science Foundation GRFP and the Fannie and John Hertz Foundation.Publisher
American Chemical Society (ACS)Journal
Nano LettersISSN
1530-69841530-6992
PubMed ID
19810728Handle URI
http://hdl.handle.net/10754/598607ae974a485f413a2113503eed53cd6c53
10.1021/nl902205n
Scopus Count
Collections
Publications Acknowledging KAUST SupportRelated articles
- Nanofibrillar self-organization of regioregular poly(3-hexylthiophene) and [6,6]-phenyl C(61)-butyric acid methyl ester by dip-coating: a simple method to obtain efficient bulk heterojunction solar cells.
- Authors: Valentini L, Bagnis D, Kenny JM
- Issue date: 2009 Mar 4
- P3HT/PCBM bulk heterojunction organic photovoltaics: correlating efficiency and morphology.
- Authors: Chen D, Nakahara A, Wei D, Nordlund D, Russell TP
- Issue date: 2011 Feb 9
- Electron accumulation on metal nanoparticles in plasmon-enhanced organic solar cells.
- Authors: Salvador M, MacLeod BA, Hess A, Kulkarni AP, Munechika K, Chen JI, Ginger DS
- Issue date: 2012 Nov 27
- [60]Fulleropyrrolidines bearing π-conjugated moiety for polymer solar cells: contribution of the chromophoric substituent on C₆₀ to the photocurrent.
- Authors: Saravanan C, Liu CL, Chang YM, Lu JD, Hsieh YJ, Rwei SP, Wang L
- Issue date: 2012 Nov
- Discriminating between bilayer and bulk heterojunction polymer:fullerene solar cells using the external quantum efficiency.
- Authors: Gevaerts VS, Koster LJ, Wienk MM, Janssen RA
- Issue date: 2011 Sep