Tuning conversion efficiency in metallo endohedral fullerene-based organic photovoltaic devices

Ross RB, Cardona CM, Swain FB, Guldi DM, Sankaranarayanan SG, Van Keuren E, Holloway BC, Drees M (2009)

Publication Type: Journal article, Original article

Publication year: 2009

Journal

Advanced Functional Materials Wiley-VCH Verlag

Original Authors: Ross R.B., Cardona C.M., Swain F.B., Guldi D.M., Sankaranarayanan S.G., Van Keuren E., Holloway B.C., Drees M.

Publisher: Wiley-VCH Verlag

Book Volume: 19

Pages Range: 2332-2337

Journal Issue: 14

DOI: 10.1002/adfm.200900214

Abstract

Here the influence that l-(3-hexoxycarbonyl)propyl-l-phenyl-[6,6]-Lu N@C, LuN@C-PCBH, a novel acceptor material, has on active layer morphology and the performance of organic photovoltaic (OPV) devices using this material is reported. Polymer/fullerene blend films with poly(3-hexylthiophene), P3HT, donor material and Lu N@C-PCBH acceptor material are studied using absorption spectroscopy, grazing incident X-ray diffraction and photocurrent spectra of photovoltaic devices. Due to a smaller molecular orbital offset the OPV devices built with LuN@C-PCBH display increased open circuit voltage over empty cage fullerene acceptors. The photovoltaic performance of these metallo endohedral fullerene blend films is found to be highly impacted by the fullerene loading. The results indicate that the optimized blend ratio in a P3HT matrix differs from a molecular equivalent of an optimized P3HT/ [6,6]-phenyl-C-butyric methyl ester, C-PCBM, active layer, and this is related to the physical differences of the C fullerene. The influence that active layer annealing has on the OPV performance is further evaluated. Through properly matching the film processing and the donor/acceptor ratio, devices with power conversion efficiency greater than 4% are demonstrated. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Authors with CRIS profile

Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM) Interdisziplinäres Zentrum für Molekulare Materialien (ICMM)

Involved external institutions

Luna Innovations Incorporated US United States (USA) (US) Georgetown University US United States (USA) (US)

How to cite

APA:

Ross, R.B., Cardona, C.M., Swain, F.B., Guldi, D.M., Sankaranarayanan, S.G., Van Keuren, E.,... Drees, M. (2009). Tuning conversion efficiency in metallo endohedral fullerene-based organic photovoltaic devices. Advanced Functional Materials, 19(14), 2332-2337. https://doi.org/10.1002/adfm.200900214

MLA:

Ross, Russel B., et al. "Tuning conversion efficiency in metallo endohedral fullerene-based organic photovoltaic devices." Advanced Functional Materials 19.14 (2009): 2332-2337.

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