TITLE

Combined optical and electrical modeling of polymer:fullerene bulk heterojunction solar cells

AUTHOR(S)
Kotlarski, Jan D.; Blom, Paul W. M.; Koster, Lambert. J. A.; Lenes, Martijn; Slooff, Lenneke H.
PUB. DATE
April 2008
SOURCE
Journal of Applied Physics;Apr2008, Vol. 103 Issue 8, p084502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Optical interference effects are important for the total absorption as well as the profile of the exciton generation rate in polymer:fullerene bulk heterojunction solar cells. For solar cells with an active layer of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] as electron donor and [6,6]-phenyl C61 butyric acid methyl ester as electron acceptor, the total exciton generation rate can be directly extracted from the saturated photocurrent. It is demonstrated that for solar cells with an active layer thickness smaller than 250 nm, a constant exciton generation profile, based on this extracted total rate, gives identical electrical characteristics as compared to exciton generation profiles from an optical model. For thicker cells interference effects have to be taken into account, since a uniform generation profile leads to an overestimation of recombination losses and space-charge formation.
ACCESSION #
31873562

 

Related Articles

  • Ordered bulk heterojunction solar cells with vertically aligned TiO2 nanorods embedded in a conjugated polymer. Kuo, C. Y.; Tang, W. C.; Gau, C.; Guo, T. F.; Jeng, D. Z. // Applied Physics Letters;7/21/2008, Vol. 93 Issue 3, p033307 

    Vertically aligned TiO2 nanorods were prepared by its sol-gel which is spun coat onto aluminum anodic oxide template pregrown on an indium tin oxide glass substrate. The poly(3-hexylthiophene) (P3HT), a conjugate polymer infiltrated into the nanorod arrays, and the combined system were used as...

  • Field and temperature dependence of the photocurrent in polymer/fullerene bulk heterojunction solar cells. Gommans, H. H. P.; Kemerink, M.; Kramer, J. M.; Janssen, R. A. J. // Applied Physics Letters;9/19/2005, Vol. 87 Issue 12, p122104 

    The photocurrent in polymer/fullerene blends is characterized as a function of bias at temperatures ranging from 125 to 300 K. Assuming a constant generation rate and bimolecular recombination, the results are numerically modeled within the drift-diffusion approximation. Bimolecular...

  • Spectroscopic Analysis of NIR-Dye Sensitization in Bulk Heterojunction Polymer Solar Cells. Ito, Shinzaburo; Ohkita, Hideo; Benten, Hiroaki; Honda, Satoshi // AMBIO - A Journal of the Human Environment;Mar2012, Vol. 41, p132 

    The photovoltaic conversion efficiency for near-infrared (NIR) sunlight is improved successfully by dye sensitization of bulk heterojunction polymer solar cells, in which the active layer was prepared by a ternary blend of poly(3-hexylthiophene), a fullerene derivative...

  • Intensity-dependent equivalent circuit parameters of organic solar cells based on pentacene and C60. Yoo, Seunghyup; Domercq, Benoit; Kippelen, Bernard // Journal of Applied Physics;5/15/2005, Vol. 97 Issue 10, p10P109 

    We present studies of the current–voltage characteristics of organic solar cells based on heterojunctions of pentacene and C60 as a function of illumination intensity. The photovoltaic response at a given illumination level is parameterized and modeled using the equivalent circuit model...

  • Nanoimprinted large area heterojunction pentacene-C60 photovoltaic device. Dissanayake, D. M. Nanditha M.; Adikaari, A. A. D. T.; Curry, Richard J.; Hatton, Ross A.; Silva, S. R. P. // Applied Physics Letters;6/18/2007, Vol. 90 Issue 25, p253502 

    A pentacene-C60 bilayer heterojunction organic photovoltaic device with interpenetrating donor-acceptor interface was fabricated by nanoimprinting the pentacene layer prior to C60 deposition. An amorphous silicon substrate nanostructured using an excimer laser was imprinted onto the pentacene...

  • Effects of the ambient temperature and the defect density on the performance the solar cell (HIT). Moustafa, Bouzaki Mohammed; Boumediene, Benyoucef; Tayeb, Benouaz; Amina, Benhamou; Aicha, Soufi; Meriem, Chadel; Hicham, Maamar // International Journal of Nanoelectronics & Materials;2016, Vol. 9 Issue 1, p85 

    The ambient temperature and the defects density in the Hetero-junction with Intrinsic Thin layers solar cells (HIT) strongly influence their performances. In the first part, we presents the band diagram on the front/back simulated solar cell based on a-Si: H / c-Si (p)/a-Si:h. In second part, we...

  • Strong red emission in heterojunctions of conjugated polymer blends. Li, Zong-Long; Meng, Hsin-Fei; Horng, Sheng-Fu; Hsu, Chain-Shu; Chen, Lal-Cheng; Chang, Shu-Mel // Applied Physics Letters;6/14/2004, Vol. 84 Issue 24, p4944 

    We demonstrate strong red electroluminescence in bilayer polymer light-emitting diodes with poly(3-hexylthiophene) and polyfluorene copolymers. The emission spectrum of the diode, peaked at 612 nm, is different from either of the two polymer layers, and is attributed to the exciplex state...

  • Planar polymer photovoltaic cells with millimeter interelectrode spacing. Gao, Jun; Hui, Jin; Hou, Yanbing; Alem, Salima // Journal of Applied Physics;Oct2008, Vol. 104 Issue 8, p084512 

    We present the photovoltaic measurements of planar photovoltaic cells with extremely large interelectrode spacing based on either pure polymers or polymer/fullerene blends. The planar configuration allows for both uniform and site-selective illuminations. As expected, cells with identical...

  • Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell. Nam, Young Min; Huh, June; Jo, Won Ho // Journal of Applied Physics;Dec2011, Vol. 110 Issue 11, p114521 

    A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM). When the photovoltaic properties of model...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics