Advanced MaterialsVolume 20, Issue 3 p. 579-583 Communication Design Rules for Donors in Bulk-Heterojunction Tandem Solar Cells�Towards 15 % Energy-Conversion Efficiency† G. Dennler, G. Dennler [email protected] Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorM. C. Scharber, M. C. Scharber Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorT. Ameri, T. Ameri Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorP. Denk, P. Denk Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorK. Forberich, K. Forberich Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorC. Waldauf, C. Waldauf Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorC. J. Brabec, C. J. Brabec [email protected] Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this author G. Dennler, G. Dennler [email protected] Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorM. C. Scharber, M. C. Scharber Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorT. Ameri, T. Ameri Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorP. Denk, P. Denk Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorK. Forberich, K. Forberich Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorC. Waldauf, C. Waldauf Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this authorC. J. Brabec, C. J. Brabec [email protected] Konarka Austria GmbH, Altenbergerstrasse 69, 4040 Linz (Austria)Search for more papers by this author First published: 17 January 2008 https://doi.org/10.1002/adma.200702337Citations: 475 † The authors gratefully acknowledge the financial support of the European Commission R&D Programme (N2T2 Project, Contract No: STREP-NMP-017481) and of the Austrian Foundation for the Advancement of Science (FWF). AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Graphical Abstract The study we present here aims at evaluating the efficiency of tandem organic solar cells expectable by stacking two materials, comparing this efficiency to the one that could be achieved by single cells based on these materials, and identifying the characteristics of the materials to be stacked to achieve efficiency higher than the single cells. In other words, we intend to clarify the potential of organic tandem solar cells and the expectations that one might have by realizing some. REFERENCES 1 P. Würfel, Physics of Solar Cells, Wiley-VCH, Weinheim, Germany 2004. 2 M. A. Green, K. Emery, Y. Hisikawa, W. Warta, Prog. Photovolt.: Res. Appl. 2007, 15, 425. 3 W. Shockley, H. J. Queisser, J. Appl. Phys. 1961, 32, 510. 4 M. Hiramoto, M. Suezaki, M. Yokoyama, Chem. Lett. 1990, 327. 5a A. Yakimov, S. R. Forrest, Appl. Phys. Lett. 2002, 80 (1), 667. 5b P. Peumans, A. Yakimov, S. F. Forrest, J. Appl. Phys. 2003, 93, 3693. 6 J. Xue, S. Ushida, B. P. Rand, S. T. Forrest, Appl. Phys. Lett. 2004, 85, 5757. 7 B. Maennig, J. Drechsel, D. Gebeyehu, P. Simon, F. Kozlowski, A. Werner, F. Li, S. Grundmann, S. Sonntag, M. Koch, K. Leo, M. Pfeiffer, H. Hoppe, D. Meissner, N. S. Sariciftci, I. Riedel, V. Dyakonov, J. Parisi, Appl. Phys. A 2004, 79, 1. 8 J. Drechsel, B. Maennig, K. Kozlowski, M. Pfeiffer, K. Leo, Appl. Phys. Lett. 2005, 86, 244102. 9a K. Triyana, T. Yasuda, K. Fujita, T. Tsutsui, Thin Solid Films 2005, 477, 198. 9b K. Triyana, T. Yasuda, K. Fujita, T. Tsutsui, Jpn. J. Appl. Phys. Part 1 2004, 43, 2352. 10a G. Dennler, H.-J. Prall, R. Koeppe, M. Egginger, R. Autengruber, N. S. Sariciftci, Appl. Phys. Lett. 2006, 89, 73502. 10b J. Gilot, M. M. Wienk, R. A. J. Janssen, Appl. Phys. Lett. 2007, 90, 143512. 10c A. Colsmann, J. Junge, C. Kayser, U. Lemmer, Appl. Phys. Lett. 2006, 89, 203506. 11 K. Kawano, N. Ito, T. Nishimori, J. Sakai, Appl. Phys. Lett. 2006, 88, 73514. 12 A. Hadipour, B. de Boer, J. Wildeman, F. B. Kooistra, J. C. Hummelen, M. G. R. Turbiez, M. M. Wienk, R. A. J. Janssen, P. W. M. Blom, Adv. Funct. Mater. 2006, 16, 1897. 13 J. Y. Kim, K. Lee, N. E. Coates, D. Moses, T.-Q. Nguyen, M. Dante, A. J. Heeger, Science 2007, 317, 222. 14 M. C. Scharber, D. Mühlbacher, M. Koppe, P. Denk, C. Waldauf, A. J. Heeger, C. J. Brabec, Adv. Mater. 2006, 18, 789. 15 D. Mühlbacher, M. C. Scharber, M. Morana, Z. Zhu, D. Waller, R. Gaudiana, C. J. Brabec, Adv. Funct. Mater. 2006, 16, 2884. 16 G. Dennler, K. Forberich, T. Ameri, C. Waldauf, P. Denk, C. J. Brabec, K. Hingerl, A. J. Heeger, J. Appl. Phys., in press. 17 Y. Kim, S. Cook, S. M. Tuladhar, S. A. Choulis, J. Nelson, J. R. Durrant, D. D. C. Bradley, M. Giles, I. McCulloch, C.-S. Ha, M. Ree, Nat. Mater. 2006, 5, 197. 18 J. Peet, J. Y. Kim, N. E. Coates, W. L. Ma, D. Moses, A. J. Heeger, G. C. Bazan, Nat. Mater. 2007, 6, 497. 19a J. W. Arbogast, C. S. Foote, J. Am. Chem. Soc. 1991, 113, 8886. 19b M. M. Wienk, J. M. Kroon, W. J. H. Verhees, J. Krol, J. C. Hummelen, P. A. Van Hal, R. A. J. Janssen, Angew. Chem. 2003, 115, 3493. 20 N.-K. Persson, O. Inganas, Sol. Energy Mater. Sol. Cells 2006, 90, 349. Citing Literature Volume20, Issue3February, 2008Pages 579-583 ReferencesRelatedInformation

Design Rules for Donors in Bulk‐Heterojunction Tandem Solar Cells�Towards 15 % Energy‐Conversion Efficiency