A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells

Nature Materials

Volumn 5, Issue 3, 2006, Pages 197-203

  Kim, Youngkyoo ^a   Cook, Steffan ^a   Tuladhar, Sachetan M ^a   Choulis, Stelios A ^a   Nelson, Jenny ^a   Durrant, James R ^a   Bradley, Donal D C ^a   Giles, Mark ^b   McCulloch, Iain ^b   Ha, Chang Sik ^c   Ree, Moonhor ^d  

^a IMPERIAL COLLEGE LONDON   (United Kingdom)

^b Merck Chemicals   (United Kingdom)

^c Pusan National University   (South Korea)

^d Pohang University of Science and Technology (POSTECH)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

ANNEALING; FULLERENES; NANOSTRUCTURED MATERIALS; PLASTIC FILMS; POLYMER BLENDS; SOLAR CELL ARRAYS;

CHARGE CARRIER DIFFUSION; DARK CURRENT DENSITY; FABRICATED DEVICES; REGIOREGULARITY (RR);

ORGANIC POLYMERS;

EID: 33644630570     PISSN: 14761122     EISSN: None     Source Type: Journal    
DOI: 10.1038/nmat1574     Document Type: Article

References (26)

1. Tang, C. W. A two-layer organic solar cell. Appl. Phys. Lett. 48, 183-185 (1986).
2. Sariciftci, N. S., Smilowitz, L., Heeger, A. J. & Wudl, F. Photoinduced electron transfer from a conducting polymer to buckminsterfullerene. Science 258, 1474-1476 (1992).
3. Halls, J. J. M. et al. Efficient photodiodes from interpenetrating networks. Nature 376, 498-500 (1995).
4. Yu, G., Gao, J., Hummelen, J. C., Wudl, F. & Heeger, A. J. Polymer photovoltaic cells: enhanced efficiencies via a network of internal donor-acceptor heterojunctions. Science 270, 1789-1791 (1995).
5. Nelson, J. Organic photovoltaic films. Mater. Today 5, 20-27 (2002).
6. Brabec, C. J., Sariciftci, N. S. & Hummelen, J. C. Plastic solar cells. Adv. Funct. Mater. 11, 15-26 (2001).
7. Brabec, C. J., Shaheen, S. E., Winder, C., Sariciftci, N. S. & Denk, P. Effect of LiF/metal electrodes on the performance of plastic solar cells. Appl. Phys. Lett. 80, 1288-1290 (2002).
8. Schilinsky, P., Waldauf, C. & Brabec, C. J. Recombination and loss analysis in polythiophene based bulk heterojunction photodetectors. Appl. Phys. Lett. 81, 3885-3887 (2002).
9. Padinger, F., Ritterberger, R. S. & Sariciftci, N. S. Effects of postproduction treatment on plastic solar cells. Adv. Funct. Mater. 13, 85-88 (2003).
10. Kim, Y. et al. Device annealing effect in organic solar cells with blends of regioregular poly(3-hexylthiophene) and soluble fullerene. Appl. Phys. Lett. 86, 063502 (2005).
11. 61 blends. Appl. Phys. Lett. 87, 083506 (2005).
12. Li, G. et al. High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends. Nature Mater. 4, 864-868 (2005).
13. Brown, P. J. et al. Effect of interchain interactions on the absorption and emission of poly(3-hexylthiophene). Phys. Rev. B 67, 064203 (2003).
14. Zhokhavets, U., Gobsch, G., Hoppe, H. & Sariciftci, N. S. Anisotropic optical properties of thin poly(3-octylthiophene)-films as a function of preparation conditions. Synth. Met. 143, 113-117 (2004).
15. Sirringhaus, H. et al. Two-dimensional charge transport in self-organized, high mobility conjugated polymers. Nature 401, 685-688 (1999).
16. Kline, R. J. et al. Dependence of regioregular poly(3-hexylthiophene) film morphology and field-effect mobility on molecular weight. Macromolecules 38, 3312-3319 (2005).
17. Österbacka, R., An, C. P., Jiang, X. M. & Vardeny, Z. V. Two-dimensional electronic excitations in self-assembled conjugated polymer nanocrystals. Science 287, 839-842 (2000).
18. Choulis, S. A. et al. High ambipolar and balanced carrier mobility in regioregular poly(3-hexylthiophene). Appl. Phys. Lett. 85, 3890-3892 (2004).
19. Montanari, I. et al. Transient optical studies of charge recombination dynamics in a polymer/fullerene composite at room temperature. Appl. Phys. Lett. 81, 3001-3003 (2002).
20. Nelson, J. Diffusion-limited recombination in polymer-fullerene blends and its influence on photocurrent collection. Phys. Rev. B 67, 155209 (2003).
21. 60-substituted malonic acid diethyl esters. J. Phys. Chem. 99, 9380-9385 (1995).
22. Kim, Y. et al. Composition and annealing effects in polythiophene/fullerene solar cells. J. Mater. Sci. 40, 1371-1376 (2005).
23. Chirvase, D., Parisi, J., Hummelen, J. C. & Dyakonov, V. Influence of nanomorphology on the photovoltaic action of polymer-fullerene composites. Nanotechnology 15, 1317-1323 (2004).
24. Kim, Y. et al. Organic photovoltaic devices based on blends of regioregular poly(3-hexylthiophene) and poly(9,9-dioctylfluorene-co-benzothiadiazole). Chem. Mater. 16, 4812-4818 (2004).
25. Koller, G., Falk, B., Weller, C., Giles, M. & McCulloch, I. Process of preparing regioregular poly-(3-substituted) thiophenes. World patent WO2005/014691 (2005).
26. Hummelen, J. C. et al. Preparation and characterization of fulleroid and methan of ullerene derivatives. J. Org. Chem. 60, 532-538 (1995).