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Energy Express

  • Editor: Bernard Kippelen
  • Vol. 18, Iss. S4 — Nov. 8, 2010
  • pp: A513–A521

Realization of efficient semitransparent organic photovoltaic cells with metallic top electrodes: utilizing the tunable absorption asymmetry

Donggeon Han, Hoyeon Kim, Soohyun Lee, Myungsoo Seo, and Seunghyup Yoo  »View Author Affiliations

Optics Express, Vol. 18, Issue S4, pp. A513-A521 (2010)

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Efficient semitransparent organic photovoltaic (OPV) cells are presented in an inverted geometry employing ZnS/ Ag/ WO3 (ZAW) as a top anode and ITO/ Cs2CO3 as a bottom cathode. Upon identification of the light absorption that differs depending on the illumination direction, the degree of the absorption asymmetry is tuned by varying the ZAW structure to maximize the efficiency for one direction or to balance it for both directions. Power conversion efficiency close to that of conventional opaque OPV cells is demonstrated in semitransparent cells for the ITO side illumination by taking advantage of the internal reflection occurring at the organic/ZAW interface. Cells with efficiencies that are reduced but balanced for both illumination directions are also demonstrated.

© 2010 OSA

OCIS Codes
(160.4890) Materials : Organic materials
(230.0250) Optical devices : Optoelectronics
(230.5170) Optical devices : Photodiodes
(250.2080) Optoelectronics : Polymer active devices
(310.4165) Thin films : Multilayer design
(310.6845) Thin films : Thin film devices and applications

ToC Category:

Original Manuscript: August 6, 2010
Revised Manuscript: September 4, 2010
Manuscript Accepted: September 6, 2010
Published: September 21, 2010

Donggeon Han, Hoyeon Kim, Soohyun Lee, Myungsoo Seo, and Seunghyup Yoo, "Realization of efficient semitransparent organic photovoltaic cells with metallic top electrodes: utilizing the tunable absorption asymmetry," Opt. Express 18, A513-A521 (2010)

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