Small Molecules with Asymmetric 4-Alkyl-8-alkoxybenzo[1,2-b:4,5-b′]dithiophene as the Central Unit for High-Performance Solar Cells with High Fill Factors
Source abstract
Abstract
A small molecule named DRBDTCO based on benzo[1,2- b:4,5- b ′]dithiophene (BDT) with an asymmetric side chain and its dimer, d DRBDTCO, with the octamethylene connector were designed and synthesized as donor materials for solution-processed bulk heterojunction solar cells. The optimized power conversion efficiency of a DRBDTCO-based device was 8.18% under AM 1.5 G irradiation (100 mW cm –2 ), which is higher than that of its d DRBDTCO-based device. Both molecule-based devices exhibited high fill factors of >73%, which are attributed to their optimized morphologies with a feature size of 15–20 nm, highly efficient charge collection, less bimolecular recombination, and well-balanced charge transport properties. The results demonstrate that the asymmetric BDT unit could be a promising building block for donor materials with high efficiencies and high fill factors.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Perovskite Materials and Applications · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
Department of Physics and Astronomy, Shanghai Jiaotong University, Shanghai 200240, China
School of Materials Science and Engineering, The National Institute for Advanced Materials, Nankai University, Tianjin 300071, China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China
References (61)
Show source-provided references
1. 10.1126/science.270.5243.178910.1126/science.270.5243.1789 ↗
2. 10.1126/science.332.6027.29310.1126/science.332.6027.293 ↗
3. 10.1002/adma.20090369710.1002/adma.200903697 ↗
4. 10.1038/nphoton.2012.1110.1038/nphoton.2012.11 ↗
5. 10.1021/cm402080510.1021/cm4020805 ↗
6. 10.1007/s11426-014-5260-210.1007/s11426-014-5260-2 ↗
7. 10.1021/acs.chemrev.5b0009810.1021/acs.chemrev.5b00098 ↗
8. 10.1038/nphoton.2015.12810.1038/nphoton.2015.128 ↗
9. 10.1038/srep0681310.1038/srep06813 ↗
10. 10.1038/ncomms629310.1038/ncomms6293 ↗
11. 10.1002/aenm.20150040610.1002/aenm.201500406 ↗
12. 10.1002/aenm.20150020410.1002/aenm.201500204 ↗
13. 10.1002/adma.20140453510.1002/adma.201404535 ↗
14. 10.1038/nphoton.2015.12610.1038/nphoton.2015.126 ↗
15. 10.1038/nenergy.2015.2710.1038/nenergy.2015.27 ↗
16. 10.1007/s11426-014-5273-x10.1007/s11426-014-5273-x ↗
17. 10.1002/adma.20160181410.1002/adma.201601814 ↗
18. 10.1002/adma.20160425110.1002/adma.201604251 ↗
19. 10.1038/srep0335610.1038/srep03356 ↗
20. 10.1021/ja509703k10.1021/ja509703k ↗
21. 10.1021/jacs.5b0030510.1021/jacs.5b00305 ↗
22. 10.1021/ar500074310.1021/ar5000743 ↗
23. 10.1021/acs.chemmater.6b0119410.1021/acs.chemmater.6b01194 ↗
24. 10.1039/C4TA06452F10.1039/C4TA06452F ↗
25. 10.1002/adma.20150381510.1002/adma.201503815 ↗
26. 10.1038/ncomms701310.1038/ncomms7013 ↗
27. 10.1007/s11426-014-5220-x10.1007/s11426-014-5220-x ↗
28. 10.1021/acs.chemmater.5b0472610.1021/acs.chemmater.5b04726 ↗
29. 10.1002/adma.20090352810.1002/adma.200903528 ↗
30. 10.1002/adma.20130147610.1002/adma.201301476 ↗
31. 10.1002/adma.20150264510.1002/adma.201502645 ↗
32. 10.1002/aelm.20160006110.1002/aelm.201600061 ↗
33. 10.1021/ja808373p10.1021/ja808373p ↗
34. 10.1038/nphoton.2009.19210.1038/nphoton.2009.192 ↗
35. 10.1002/adma.20110279010.1002/adma.201102790 ↗
36. 10.1002/anie.20100335710.1002/anie.201003357 ↗
37. 10.1021/am100034410.1021/am1000344 ↗
38. 10.1002/adma.20160285710.1002/adma.201602857 ↗
39. 10.1021/acs.macromol.5b0068410.1021/acs.macromol.5b00684 ↗
40. 10.1021/jacs.5b0374010.1021/jacs.5b03740 ↗
41. 10.1002/anie.20110232610.1002/anie.201102326 ↗
42. 10.1002/adma.20130599910.1002/adma.201305999 ↗
43. 10.1002/adma.20150149110.1002/adma.201501491 ↗
44. 10.1021/acs.chemmater.5b0388910.1021/acs.chemmater.5b03889 ↗
45. 10.1021/acs.chemmater.5b0466810.1021/acs.chemmater.5b04668 ↗
46. 10.1021/jacs.6b0349510.1021/jacs.6b03495 ↗
47. 10.1021/acs.chemmater.5b0135010.1021/acs.chemmater.5b01350 ↗
48. 10.1021/ja306865z10.1021/ja306865z ↗
49. 10.1002/cssc.20140217110.1002/cssc.201402171 ↗
50. 10.1039/C4RA04862H10.1039/C4RA04862H ↗
51. 10.1002/adma.20080165010.1002/adma.200801650 ↗
52. 10.1002/adma.1995007060810.1002/adma.19950070608 ↗
53. 10.1039/c2jm30755c10.1039/c2jm30755c ↗
54. 10.1038/nphoton.2009.6910.1038/nphoton.2009.69 ↗
55. 10.1038/nphoton.2014.26910.1038/nphoton.2014.269 ↗
56. 10.1021/nl303439810.1021/nl3034398 ↗
57. 10.1002/adma.20110300610.1002/adma.201103006 ↗
58. 10.1002/adfm.20140136710.1002/adfm.201401367 ↗
59. 10.1039/C4EE03424D10.1039/C4EE03424D ↗
60. 10.1016/j.progpolymsci.2013.07.01010.1016/j.progpolymsci.2013.07.010 ↗
61. 10.1002/adma.20060109310.1002/adma.200601093 ↗