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Correlation among the ionization potential, built-in potential, and the open-circuit voltage of multi-layered organic photovoltaic devices

Published online by Cambridge University Press:  02 March 2011

Eiji Itoh
Affiliation:
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553,
Toshiki Shirotori
Affiliation:
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553,
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Abstract

We have investigated the current-voltage characteristics of the multi-layered photovoltaic devices consisting of ITO/oxide /p-type (donor)/fullerene/ bathocuproine (BCP)/ Al structures. We chose various p-type (donors) small molecules and polymers in order to tune the values of ionization potential (IP) of donor molecules. The open-circuit voltage (Voc) increases with the increment of IP of donor materials. However, VOC was limited at ~0.6-0.7V for the devices without oxide layer. On the other hand, the VOC increases up to 0.9V for the devices with NiO and to ~ 1.1V for the devices with MoOX as a hole extraction buffer layer, respectively. We also estimated the work-function differences between Al and the oxide as 0.7, 0.9-1.0, and 1.2-1.3 eV for the device without oxide, with NiO, and with MoOX, respectively. We therefore concluded the value of VOC is limited by the lower part of VOC and energy difference between the LUMO of fullerene and the HOMO of donor ΔE.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

1. Peumans, P., Yakimov, A., and Forrest, S. R., J. Appl. Phys. 93, 3693 (2003).CrossRefGoogle Scholar
2. Xue, J., Uchida, S., Rand, B. P., and Forrest, S. R., Appl. Phys. Lett. 84, 3013 (2004).CrossRefGoogle Scholar
3. Nelson, J., Kirkpartrick, J., and Ravirajan, P., Phys. Rev. B. 69, 035337 (2004).CrossRefGoogle Scholar
4. Hiramoto, M. and Sakai, K., Proc. SPIE 7052, 70520H (2008).CrossRefGoogle Scholar
5. Rand, B. P., Burk, D. P., and Forrest, S. R., Phys. Rev. B 75, 115327 (2007).CrossRefGoogle Scholar
6. Bradec, C. J., Sariciftci, N. S., and Hummelen, J. C., Adv. Func. Mater. 11, 15 (2001).Google Scholar
7. Taima, T., Sakai, J., Yamarani, T., and Saito, K., Jpn. J. Appl. Phys. 45, L995 (2006).CrossRefGoogle Scholar
8. Kim, J. Y., Kim, S. H., Lee, H., Lee, K., Ma, W., Gong, X., and Heeger, A. J., Adv. Mater. 18, 572 (2006).CrossRefGoogle Scholar
9. Kim, J. Y., Lee, K., Coates, N. E., Moses, D., Nguyen, T., Dante, M., and Heeger, A. J., Science 317, 222 (2007).CrossRefGoogle Scholar
10. Cai, W., Gong, X., and Cao, Y., Sol. Energy Mater. Sol. Cells 94, 114 (2010).CrossRefGoogle Scholar
11. Shrotriya, V., Li, G., Yao, Y., Chu, C. W., and Yang, Y., Appl. Phys. Lett. 88, 073508 (2006).CrossRefGoogle Scholar
12. Oyamada, T., Sugawara, Y., Terao, Y., Sasabe, H., and Adachi, C., Jpn. J. Appl. Phys. 46, 1734 (2007).CrossRefGoogle Scholar
13. Kinoshita, Y., Takenaka, R., and Murata, H., Appl. Phys. Lett. 92, 243309 (2008).CrossRefGoogle Scholar
14. Han, S., Shin, W. S., Seo, M., Gupta, D., and Moon, S. J., Org. Electron. 10, 791 (2009).CrossRefGoogle Scholar
15. Irwin, M. D., Buchholz, D. B., Hains, A. W., Chang, R. P. H., and Marks, T. J., Proc. Nati. Acad. Sci. U.S.A. 105, 2783 (2008).CrossRefGoogle Scholar
16. Itoh, E. and Iwamoto, M.: J. Appl. Phys. 81, 1790 (1997).CrossRefGoogle Scholar
17. Itoh, E., Kokubo, H., Iwamoto, M., Burghard, M., Roth, S., and Hanack, M., Jpn. J. Appl. Phys. 37, 577 (1998).CrossRefGoogle Scholar
18. Scheidt, H., Glöbl, M., and Dose, V., Surface Science 112, 97 (1981).CrossRefGoogle Scholar
19. Harima, Y., Furusho, S., Okazaki, K., Kunugi, Y., and Yamashita, K., Thin Solid Films 300, 213 (1997).CrossRefGoogle Scholar
20. Harima, Y., Furusho, S., Kunugi, Y., and Yamashita, K., Chem. Phys. Lett. 258, 213 (1996).CrossRefGoogle Scholar
21. Miyairi, K., Itoh, E., and Hashimoto, Y., Thin Solid Films 438-439, 147(2003).CrossRefGoogle Scholar
22. Itoh, E., Higuchi, Y., Furihata, D., and Shirotori, T., To be published in Jpn. J. Appl. Phys. (2011).Google Scholar
23. Itoh, E., Higuchi, Y., and Furihata, D., To be published in IEICE Transactions on Electronics, E94-C (2011).Google Scholar

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Correlation among the ionization potential, built-in potential, and the open-circuit voltage of multi-layered organic photovoltaic devices
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Correlation among the ionization potential, built-in potential, and the open-circuit voltage of multi-layered organic photovoltaic devices
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