High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends
Source abstract
Abstract
Converting solar energy into electricity provides a much-needed solution to the energy crisis the world is facing today. Polymer solar cells have shown potential to harness solar energy in a cost-effective way. Significant efforts are underway to improve their efficiency to the level of practical applications. Here, we report highly efficient polymer solar cells based on a bulk heterojunction of polymer poly(3-hexylthiophene) and methanofullerene. Controlling the active layer growth rate results in an increased hole mobility and balanced charge transport. Together with increased absorption in the active layer, this results in much-improved device performance, particularly in external quantum efficiency. The power-conversion efficiency of 4.4% achieved here is the highest published so far for polymer-based solar cells. The solution process involved ensures that the fabrication cost remains low and the processing is simple. The high efficiency achieved in this work brings these devices one step closer to commercialization.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Quantum Dots Synthesis And Properties · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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1. Brabec, C. J., Sariciftci, N. S. & Hummelen, J. C. Plastic solar cells. Adv. Funct. Mater. 11, 15–26 (2001).10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO;2-A ↗
2. Coakley, K. M. & McGehee, M. D. Conjugated polymer photovoltaic cells. Chem. Mater. 16, 4533–4542 (2004).10.1021/cm049654n ↗
3. Brabec, C. J. Organic photovoltaics: technology and market. Solar Energy Mater. Solar Cells 83, 273–292 (2004).10.1016/j.solmat.2004.02.030 ↗
4. Shaheen, S. E. et al. 2.5% efficient organic plastic solar cells. Appl. Phys. Lett. 78, 841–843 (2001).10.1063/1.1345834 ↗
5. Padinger, F., Rittberger, R. S. & Sariciftci, N. S. Effects of post production treatment on plastic solar cells. Adv. Funct. Mater. 13, 85–88 (2003).10.1002/adfm.200390011 ↗
6. Walduf, C., Schilinsky, P., Hauch, J. & Brabec, C. J. Material and device concepts for organic photovoltaics: towards competitive efficiencies. Thin Solid Films 451–452, 503–507 (2004).10.1016/j.tsf.2003.11.043 ↗
7. 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).10.1126/science.270.5243.1789 ↗
8. Saraciftci, N. S., Smilowitz, L., Heeger, A. J. & Wudl, F. Photoinduced electron transfer from a conducting polymer to buckminsterfullerene. Science 258, 1474–1476 (1992).10.1126/science.258.5087.1474 ↗
9. Peumans, P., Uchida, S. & Forrest, S. R. Efficient bulk-heterojunction photovoltaic cells using small-molecular-weight organic thin films. Nature 425, 158–162 (2003).10.1038/nature01949 ↗
10. Yang, F., Shtein, M. & Forrest, S. R. Controlled growth of a molecular bulk heterojunction photovoltaic cell. Nature Mater. 4, 37–41 (2005).10.1038/nmat1285 ↗
11. 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).10.1088/0957-4484/15/9/035 ↗
12. Shrotriya, V., Ouyang, J., Tseng, R. J., Li, G. & Yang, Y. Absorption spectra modification in poly(3-hexylthiophene):methanofullerene blend thin films. Chem. Phys. Lett. 411, 138–143 (2005).10.1016/j.cplett.2005.06.027 ↗
13. Grevin, B., Rannou, P., Payerne, R., Pron, A. & Travers, J. P. Multi-scale scanning tunneling microscopy imaging of self-organized regioregular poly(3-hexylthiophene) films. J. Chem. Phys. 118, 7097–7102 (2003).10.1063/1.1561435 ↗
14. Sirringhaus, H. et al. Two-dimensional charge transport in self-organized, high-mobility conjugated polymers. Nature 401, 685–688 (1999).10.1038/44359 ↗
15. Bao, Z., Dodabalapur, A. & Lovinger, A. J. Soluble and processable regioregular poly(3-hexylthiophene) for thin film field-effect transistor applications with high mobility. Appl. Phys. Lett. 69, 4108–4110 (1996).10.1063/1.117834 ↗
16. Melzer, C., Koop, E. J., Mihailetchi, V. D. & Blom, P. W. M. Hole transport in poly(phenylene vinylene)/methanofullerene bulk-heterojunction solar cells. Adv. Funct. Mater. 14, 865–870 (2004).10.1002/adfm.200305156 ↗
17. Shirland, F. The history, design, fabrication and performance of CdS thin film solar cells. Adv. Energy Conversion 6, 201–222 (1966).10.1016/0365-1789(66)90016-6 ↗
18. Li, G., Shrotriya, V., Yao, Y. & Yang, Y. Investigation of annealing effects and film thickness dependence of polymer solar cells based on poly(3-hexylthiophene). J. Appl. Phys. 98, 043704 (2005).10.1063/1.2008386 ↗
19. Choulis, S. A. et al. Investigation of transport properties in polymer/fullerene blends using time-of-flight photocurrent measurements. Appl. Phys. Lett. 83, 3812–3814 (2003).10.1063/1.1624636 ↗
20. Mihailetchi, V. D. et al. Compositional dependence of the performance of poly(p-phenylenevinylene):methanofullerene bulk-heterojunction solar cells. Adv. Funct. Mater. 15, 795–801 (2005).10.1002/adfm.200400345 ↗
21. Goodman, A. M. & Rose, A. Double extraction of uniformly generated electron–hole pairs from insulators with noninjecting contacts. J. Appl. Phys. 42, 2823–2830 (1971).10.1063/1.1660633 ↗
22. Snaith, H. L., Greenham, N. C. & Friend, R. H. The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices. Adv. Mater. 16, 1640–1645 (2004).10.1002/adma.200305766 ↗
23. Sunderberg, M., Inganas, O., Stafstrom, S., Gustafsson, G. & Sjogren, B. Optical absorption of poly(3-alkylthiophenes) at low temperatures. Solid State Commun. 71, 435–439 (1989).10.1016/0038-1098(89)90087-2 ↗
24. Prosa, T. J., Moulton, J., Heeger, A. J. & Winokur, M. J. Diffraction line-shape analysis of poly(3-docecylthiophene): A study of layer disorder through the liquid crystalline polmer transition. Macromolecules 32, 4000–4009 (1999).10.1021/ma981059h ↗
25. Aasmundtveit, K. E. et al. Structural anisotropy of poly(alkylthiophene) films. Macromolecules 33, 3120–3127 (2000).10.1021/ma991631k ↗
26. Samuelsen, E. J., Breiby, D. W., Konovalov, O., Struth, B. & Smilgies, D. -M. In situ studies of transition from solution to solid film of poly(octylthiophene). Synth. Met. 123, 165–170 (2001).10.1016/S0379-6779(00)01317-5 ↗
27. Schilinsky, P., Waldauf, C., Hauch, J. & Brabec, C. J. Simulation of light intensity dependent current characteristics of polymer solar cells. J. Appl. Phys. 95, 2816–2819 (2004).10.1063/1.1646435 ↗
28. Mozer, A. J. et al. Novel regiospecific MDMO-PPV copolymer with improved charge transport for bulk heterojunction solar cells. J. Phys. Chem. B 108, 5235–5242 (2004).10.1021/jp049918t ↗
29. Xue, J., Uchida, S., Rand, B. P. & Forrest, S. R. 4.2% efficient organic photovoltaic cells with low series resistance. Appl. Phys. Lett. 84, 3013–3015 (2004).10.1063/1.1713036 ↗