TITLE

Spatial redistribution of the optical field intensity in inverted polymer solar cells

AUTHOR(S)
Fang-Chung Chen; Jyh-Lih Wu; Yi Hung
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p193304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have used indium tin oxide (ITO), a transparent conducting oxide, as an optical spacer to improve the performance of inverted polymer solar cells. The optical interference effect resulted in spatial redistribution of the optical field in the devices. Although the degree of light absorption in inverted cells was not increased, the resulting favorable distribution of photogenerated excitons probably decreased the level of exciton quenching near the electrodes. As a result, the introduction of the ITO optical spacer at an appropriate thickness increased the short-circuit current density and the overall power conversion efficiency.
ACCESSION #
50510736

 

Related Articles

  • Efficient multilayer organic solar cells using the optical interference peak. Chunfu Zhang; Tong, S. W.; Changyun Jiang; Kang, E. T.; Chan, D. S. H.; Chunxiang Zhu // Applied Physics Letters;7/28/2008, Vol. 93 Issue 4, p043307 

    A multilayer structure of copper phthalocyanine/poly(3-hexylthiophene-2,5-diyl): [6,6]-phenyl-C61-butyric acid methyl ester (CuPc/P3HT:PCBM) is used to extend the light absorption spectrum covering almost the entire visible spectrum. To maximize the light absorption, the total number of excitons...

  • Influence of the spatial photocarrier generation profile on the performance of organic solar cells. Mescher, Jan; Christ, Nico; Kettlitz, Siegfried; Colsmann, Alexander; Lemmer, Uli // Applied Physics Letters;8/13/2012, Vol. 101 Issue 7, p073301 

    We investigate the impact of the interplay of charge carrier drift and diffusion on the fill factor of organic solar cells. Thin film interferences lead to strong gradients in the photocarrier generation profile. By means of numerical simulations, we show that the shape of the absorption profile...

  • The effect of active layer thickness and composition on the performance of bulk-heterojunction solar cells. Moulé, Adam J.; Bonekamp, Jörg B.; Meerholz, Klaus // Journal of Applied Physics;11/1/2006, Vol. 100 Issue 9, p094503 

    At present, bulk heterojunction polymer solar cells are typically fabricated with an active layer thickness of between 80 and 100 nm. This active layer thickness has traditionally been chosen based on convenience and empirical results. However, a detailed study of the effects that active layer...

  • Plasmon enhanced polymer solar cells by spin-coating Au nanoparticles on indium-tin-oxide substrate. Gao, H. L.; Zhang, X. W.; Yin, Z. G.; Tan, H. R.; Zhang, S. G.; Meng, J. H.; Liu, X. // Applied Physics Letters;9/24/2012, Vol. 101 Issue 13, p133903 

    To enhance light absorption in polymer solar cells, the Au nanoparticles (NPs) with different sizes were incorporated to the devices by spin-coating Au colloid solution on the indium-tin-oxide substrates prior to deposition of buffer layer. It has been found that the power conversion efficiency...

  • Backwall superstrate configuration for ultrathin Cu(In,Ga)Se2 solar cells. Larsen, J. K.; Simchi, H.; Xin, P.; Kim, K.; Shafarman, W. N. // Applied Physics Letters;1/20/2014, Vol. 104 Issue 3, p033901-1 

    A backwall superstrate device structure that outperforms conventional substrate Cu(In,Ga)Se2 devices for thin absorbers is demonstrated. The backwall structure (glass/In2O3-SnO2/MoO3-x/ Cu(In,Ga)Se2/CdS/i-ZnO/Ag) utilizes a MoO3–x transparent back contact to allow illumination of the...

  • Light-harvesting antennae for polymer solar cells. Doust, Alexander B.; Yang, Xiujuan; Dykstra, Tieneke E.; Koo, Kevin; Scholes, Gregory D. // Applied Physics Letters;11/20/2006, Vol. 89 Issue 21, p213505 

    The authors demonstrate the incorporation of an artificial, extrinsic antenna into organic, conjugated polymer layers. This can lead to the independent optimization of spectral and spatial cross section for light absorption in organic solar devices. They report studies of three antenna layers,...

  • Solution-processed organic tandem solar cells with embedded optical spacers. Hadipour, Afshin; de Boer, Bert; Blom, Paul W. M. // Journal of Applied Physics;Oct2007, Vol. 102 Issue 7, p074506 

    We demonstrate a solution-processed polymer tandem solar cell in which the two photoactive single cells are separated by an optical spacer. The use of an optical spacer allows for an independent optimization of both the electronic and optical properties of the tandem cell. The optical...

  • Ternary blend polymer solar cells with enhanced power conversion efficiency. Lu, Luyao; Xu, Tao; Chen, Wei; Landry, Erik S.; Yu, Luping // Nature Photonics;Sep2014, Vol. 8 Issue 9, p716 

    The use ternary organic components is currently being pursued to enhance the power conversion efficiency of bulk heterojunction solar cells by expanding the spectral range of light absorption. Here, we report a ternary blend polymer solar cell containing two donor polymers,...

  • The operation mechanism of poly(9,9-dioctylfluorenyl-2,7-diyl) dots in high efficiency polymer solar cells. Chunyu Liu; Yeyuan He; Xinyuan Zhang; Zhiqi Li; Jinfeng Li; Liang Shen; Zhihui Zhang; Wenbin Guo; Shengping Ruan // Applied Physics Letters;5/11/2015, Vol. 106 Issue 19, p1 

    The highly efficient polymer solar cells were realized by doping poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO) dots into active layer. The dependence of doping amount on devices performance was investigated and a high efficiency of 7.15% was obtained at an optimal concentration, accounting for a...

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