Operando Direct Observation of Charge Accumulation and the Correlation with Performance Deterioration in PTB7 Polymer Solar Cells
Source abstract
Abstract
Polymer solar cells are one of the promising energy sources because of the easy solution-processable production with large area at a low cost without toxicity. Among the polymer materials, a donor–acceptor conjugated copolymer PTB7 has been extensively studied because of the typical high-performance polymer solar cells. Here, we show operando direct observation of charge accumulation in PTB7:PC71BM blend solar cells from a microscopic viewpoint using electron spin resonance spectroscopy. The accumulation of ambipolar charges in the PTB7-based cells is directly observed for the first time, which shows a clear correlation with the performance deterioration during device operation. The sites of the ambipolar charge accumulation are elucidated at the molecular level, whose information would be useful for improving the cell durability in addition to the performance improvement.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Thin-Film Transistor Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Semiconductor Device Materials Group, Nano Materials Field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Research Center for Photovoltaics (RCPV), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
Funding
Precursory Research for Embryonic Science and Technology · Japan Society for the Promotion of Science · Advanced Low Carbon Technology Research and Development Program · SEI Group CSR Foundation
References (53)
Show source-provided references
1. 10.1021/cr050149z10.1021/cr050149z ↗
2. 10.1021/cr900271s10.1021/cr900271s ↗
3. 10.1016/s1369-7021(12)70019-610.1016/s1369-7021(12)70019-6 ↗
4. 10.1002/adma.20140038410.1002/adma.201400384 ↗
5. 10.1021/ja808373p10.1021/ja808373p ↗
6. 10.1021/ja901545q10.1021/ja901545q ↗
7. 10.1002/adma.20090352810.1002/adma.200903528 ↗
8. 10.1021/ja208556410.1021/ja2085564 ↗
9. 10.1002/aenm.20120037710.1002/aenm.201200377 ↗
10. 10.1002/adma.20110300610.1002/adma.201103006 ↗
11. 10.1038/nphoton.2012.19010.1038/nphoton.2012.190 ↗
12. 10.1021/jp510996w10.1021/jp510996w ↗
13. 10.1016/j.solener.2010.09.00710.1016/j.solener.2010.09.007 ↗
14. 10.1002/adma.20110418710.1002/adma.201104187 ↗
15. 10.1039/c2cc38243a10.1039/c2cc38243a ↗
16. 10.1016/j.orgel.2009.07.00810.1016/j.orgel.2009.07.008 ↗
17. 10.1016/j.orgel.2010.08.02010.1016/j.orgel.2010.08.020 ↗
18. 10.1016/j.orgel.2013.10.01410.1016/j.orgel.2013.10.014 ↗
19. 10.1016/j.solmat.2011.09.02610.1016/j.solmat.2011.09.026 ↗
20. 10.1016/j.solmat.2012.12.04110.1016/j.solmat.2012.12.041 ↗
21. 10.1016/j.synthmet.2015.08.00510.1016/j.synthmet.2015.08.005 ↗
22. 10.1016/j.solmat.2010.05.04310.1016/j.solmat.2010.05.043 ↗
23. 10.1002/adfm.20090157310.1002/adfm.200901573 ↗
24. Yamanari, T.; Ogo, H.; Taima, T.; Sakai, J.; Tsukamoto, J.; Yoshida, Y. Photo-Degradation and its Recovery by Thermal Annealing in Polymer-Based Organic Solar Cells. 2010 35th IEEE Photovoltaic Specialists Conference (PVSC); IEEE, 2010; pp 001628–001631.10.1109/PVSC.2010.5616522 ↗
25. 10.1002/aenm.20130069310.1002/aenm.201300693 ↗
26. 10.1039/c5ee02912k10.1039/c5ee02912k ↗
27. 10.1103/physrevlett.97.25660310.1103/physrevlett.97.256603 ↗
28. 10.1002/adma.20120401510.1002/adma.201204015 ↗
29. 10.1002/aenm.20160017110.1002/aenm.201600171 ↗
30. 10.1063/1.496328510.1063/1.4963285 ↗
31. 10.1103/physrevb.64.19520610.1103/physrevb.64.195206 ↗
32. 10.1103/physrevb.64.24521010.1103/physrevb.64.245210 ↗
33. 10.1021/jp101234710.1021/jp1012347 ↗
34. 10.1016/j.orgel.2011.06.02010.1016/j.orgel.2011.06.020 ↗
35. 10.1039/c3cp51477c10.1039/c3cp51477c ↗
36. 10.1002/aenm.20110077410.1002/aenm.201100774 ↗
37. 10.1063/1.488385810.1063/1.4883858 ↗
38. 10.1063/1.497778910.1063/1.4977789 ↗
39. 10.1021/am303186f10.1021/am303186f ↗
40. 10.1021/acsomega.7b0009710.1021/acsomega.7b00097 ↗
41. 10.1021/jp072306z10.1021/jp072306z ↗
42. 10.1016/0020-7381(72)80044-510.1016/0020-7381(72)80044-5 ↗
43. 10.1021/ja00542a01610.1021/ja00542a016 ↗
44. 10.1021/ja00064a07010.1021/ja00064a070 ↗
45. 10.1021/ja00106a02710.1021/ja00106a027 ↗
46. 10.1002/(sici)1521-4095(199903)11:3<250::aid-adma250>3.0.co;2-j10.1002/(sici)1521-4095(199903)11:3<250::aid-adma250>3.0.co;2-j ↗
47. 10.1016/j.synthmet.2012.11.00910.1016/j.synthmet.2012.11.009 ↗
48. 10.1080/15421406.2014.93597810.1080/15421406.2014.935978 ↗
49. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, H. P.; Izmaylov, A. F.; Bloino, J.; Zheng, G.; Sonnenberg, J. L.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao, O.; Nakai, H.; Vreven, T.; Montgomery, J. A., Jr.; Peralta, J. E.; Ogliaro, F.; Bearpark, M.; Heyd, J. J.; Brothers, E.; Kudin, K. N.; Staroverov, V. N.; Kobayashi, R.; Normand, J.; Raghavachari, K.; Rendell, A.; Burant, J. C.; Iyengar, S. S.; Tomasi, J.; Cossi, M.; Rega, N.; Millam, J. M.; Klene, M.; Knox, J. E.; Cross, J. B.; Bakken, V.; Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Ochterski, J. W.; Martin, R. L.; Morokuma, K.; Zakrzewski, V. G.; Voth, G. A.; Salvador, P.; Dannenberg, J. J.; Dapprich, S.; Daniels, A. D.; Farkas, Ö.; Foresman, J. B.; Ortiz, J. V.; Cioslowski, J.; Fox, D. J. Gaussian 09, revision D.01, Gaussian, Inc., Wallingford, CT, 2013.
50. 10.1016/j.saa.2014.09.04310.1016/j.saa.2014.09.043 ↗
51. 10.1080/15421406.2014.93178010.1080/15421406.2014.931780 ↗
52. 10.1021/acs.chemmater.5b0434610.1021/acs.chemmater.5b04346 ↗
53. 10.1002/adfm.20130285110.1002/adfm.201302851 ↗