1 / 13

Plasmonic Effects in Organic Solar Cells

PIERS 2012 in Kuala Lumpur, Malaysia. Plasmonic Effects in Organic Solar Cells. Wei E.I. Sha, Wallace C.H. Choy, Weng Cho Chew Department of Electrical and Electronic Engineering The University of Hong Kong Speaker: Wei E.I Sha Email: wsha@eee.hku.hk.

lakia
Download Presentation

Plasmonic Effects in Organic Solar Cells

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PIERS 2012 in Kuala Lumpur, Malaysia Plasmonic Effects in Organic Solar Cells Wei E.I. Sha, Wallace C.H. Choy, Weng Cho Chew Department of Electrical and Electronic Engineering The University of Hong Kong Speaker: Wei E.I Sha Email: wsha@eee.hku.hk

  2. Plasmonic Effects in Organic Solar Cells (1) Advance of solar cell technology organic solar cell monocrystalline silicon solar cell amorphous/polycrystalline silicon solar cell

  3. Plasmonic Effects in Organic Solar Cells (2) Thin-film organic solar cell • low-cost processing • mechanically flexible • large-area application • environmentally friendly • low exciton diffusion length • low carrier mobility

  4. Plasmonic Effects in Organic Solar Cells (3) exciton diffusion Working principle charge separation charge collection optical absorption

  5. Plasmonic Effects in Organic Solar Cells (4) Why optical enhancement? The thickness of the active layer must be smaller than the exciton diffusion length to avoid bulk recombination. As a result, the thin-film organic solar cell has poor photon absorption or harvesting. Plasmonic solar cell is one of emerging solar cell technologies to enhance the optical absorption.

  6. W.E.I. Sha, W.C.H. Choy, and W.C. Chew, Opt. Lett., 36(4), 478-480, 2011. Plasmonic Effects in Organic Solar Cells (5) Small molecule organic solar cell PML PBC PBC Au PEDOT:PSS Au PML Lambert’s cosine law finite-difference frequency-domain method (TE & TM)

  7. X.H. Li, W.E.I. Sha, W.C.H. Choy, etc, J. Phys. Chem. C, 2012. In Press. doi: 10.1021/jp211237c Plasmonic Effects in Organic Solar Cells (6) Plasmonic band edge boosted optical enhancement (theory and experiment)

  8. W.E.I. Sha, W.C.H. Choy, Y.P. Chen, and W.C. Chew, Appl. Phys. Lett., 99(11), 113304, 2011. Plasmonic Effects in Organic Solar Cells (7) Bulk heterojunction polymer solar cell 2 fold increase in total absorption! active layer enhancement factors directional scattering k k VIE-FFT method (BiCG-STAB) Near-field Far-field

  9. Plasmonic Effects in Organic Solar Cells (8) Comparisons to experimental results nanoparticles in spacer layer nanoparticles in active layer C.C.D. Wang, W.C.H. Choy, etc, J. Mater. Chem., 22, 1206-1211, 2011.D.D.S. Fung, L.F. Qiao, W.C.H. Choy, etc, J. Mater. Chem., 21, 16349-16356, 2011.

  10. W.E.I. Sha, W.C.H. Choy, and W.C. Chew, Opt. Express, 19(17), 15908-15918, 2011. Plasmonic Effects in Organic Solar Cells (9) Hybrid plasmonic system good spectral overlap 4 fold increase in total absorption!

  11. W.E.I. Sha, W.C.H. Choy, Y.M. Wu, and W.C. Chew, Opt. Express, 20(3), 2572-2580, 2012. Plasmonic Effects in Organic Solar Cells (10) Multiphysics modeling using unified finite difference method Maxwell’s equation generation rate semiconductor equations

  12. Plasmonic Effects in Organic Solar Cells (11) Beyond optical absorption enhancement: facilitating hole collection!

  13. Acknowledgement Thanks for your attention!

More Related