Synthesis of small molecule dye additive for efficient and DIO-free ternary organic solar cells
Source abstract
Abstract
A promising technique to enhance absorption of light in organic solar cells, “ternary approach” represents an important function in improving the device performance. We combined one small molecule dye (5,8-di(benzofuran-2-yl)-2,3-diphenylquinoxaline) (DB-Qx) with [6, 6]-phenyl C71 butyric acid methyl ester (PC71BM) (as the electron acceptor) and poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiopheneco-3-fluorothieno[3,4-b]thiophene-2-carboxylate] (PTB7-Th)(as the electron donor polymer) to form ternary solar cells. The morphology of the active layer of the ternary blend and hole mobility was potentially enhanced by the addition of a molecular donor. The complementary absorption of the two donors and matching photo-luminesce overlapping of DB-Qx with PTB7-Th contributed to improving the device performance. This means that the molecular donor in the ternary blend has an active function in the morphology. The devices produced PCE of 8.64% in the ternary blend system relative to 5.98% in the binary blend system. And, since the emission of DB-Qx partially overlaps with the absorption of PTB7Th, the transfer of energy from DB-Qx to PTB7-TH can improve the exciton utilization efficiency and achieve enhanced overall power conversion efficiency in this ternary solar cell. In this study, we synthesized a small fluorescent molecule material and constructed efficient ternary blend PSCs. Remarkably, the inverted device DIO-free ternary solar cells boost PCE from 5.98 to 8.64% and also exhibit the combined improvement in JSC and the morphology compared to those of DIO-processed films.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Cui Y, Yao H, Zhang J et al (2019) Over 16% efficiency organic photovoltaic cells enabled by a chlorinated acceptor with increased open-circuit voltages. Nat Commun 10:251510.1038/s41467-019-10351-5 ↗
2. Pan M-A, Lau T-K, Tang Y et al (2019) 16.7%-efficiency ternary blended organic photovoltaic cells with PCBM as the acceptor additive to increase the open-circuit voltage and phase purity. J Mater Chem A 7:20713–2072210.1039/C9TA06929A ↗
3. Zhan L, Li S, Lau T-K et al (2020) Over 17% efficiency ternary organic solar cells enabled by two non-fullerene acceptors working in an alloy-like model. Energy Environ Sci 13:635–64510.1039/C9EE03710A ↗
4. Savoie BM, Dunaisky S, Marks TJ, Ratner MA (2015) The scope and limitations of ternary blend organic photovoltaics. Adv Energy Mater 5:140089110.1002/aenm.201400891 ↗
5. Ameri T, Khoram P, Min J, Brabec CJ (2013) Organic ternary solar cells: a review. Adv Mater 25:4245–426610.1002/adma.201300623 ↗
6. Lu L, Kelly MA, You W, Yu L (2015) Status and prospects for ternary organic photovoltaics. Nat Photonics 9:491–50010.1038/nphoton.2015.128 ↗
7. Koppe M, Egelhaaf HJ, Dennler G et al (2010) Near IR sensitization of organic bulk heterojunction solar cells: towards optimization of the spectral response of organic solar cells. Adv Funct Mater 20:338–34610.1002/adfm.200901473 ↗
8. Huang J-H, Velusamy M, Ho K-C, Lin J-T, Chu C-W (2010) A ternary cascade structure enhances the efficiency of polymer solar cells. J Mater Chem 20:2820–282510.1039/b918362k ↗
9. Lu L, Xu T, Chen W, Landry ES, Yu L (2014) Ternary blend polymer solar cells with enhanced power conversion efficiency. Nat Photonics 8:716–72210.1038/nphoton.2014.172 ↗
10. Ameri T, Min J, Li N et al (2012) Performance Enhancement of the P3HT/PCBM Solar Cells through NIR Sensitization Using a Small-Bandgap Polymer. Adv Energy Mater 2:1198–120210.1002/aenm.201200219 ↗
11. Zhang S, Zuo L, Chen J et al (2016) Improved photon-to-electron response of ternary blend organic solar cells with a low band gap polymer sensitizer and interfacial modification. J Mater Chem A 4:1702–170710.1039/C5TA09727D ↗
12. Liu T, Huo L, Sun X et al (2015) Ternary organic solar cells based on two highly efficient polymer donors with enhanced power conversion efficiency. Adv Energy Mater 6:150210910.1002/aenm.201502109 ↗
13. Liu W, Shi H, Fu W, Zuo L, Wang L, Chen H (2015) Efficient ternary blend polymer solar cells with a bipolar diketopyrrolopyrrole small molecule as cascade material. Org Electron 25:219–22410.1016/j.orgel.2015.06.043 ↗
14. Zhong C, Choi H, Kim JY et al (2015) Ultrafast charge transfer in operating bulk heterojunction solar cells. Adv Mater 27:2036–204110.1002/adma.201405284 ↗
15. Cheng P, Li Y, Zhan X (2014) Efficient ternary blend polymer solar cells with indene-C60 bisadduct as an electron-cascade acceptor. Energy Environ Sci 7:2005–201110.1039/c3ee44202k ↗
16. Khlyabich PP, Burkhart B, Thompson BC (2011) Efficient ternary blend bulk heterojunction solar cells with tunable open-circuit voltage. J Am Chem Soc 133:14534–1453710.1021/ja205977z ↗
17. Khlyabich PP, Burkhart B, Thompson BC (2012) Compositional dependence of the open-circuit voltage in ternary blend bulk heterojunction solar cells based on two donor polymers. J Am Chem Soc 134:9074–907710.1021/ja302935n ↗
18. Lu L, Chen W, Xu T, Yu L et al (2015) High-performance ternary blend polymer solar cells involving both energy transfer and hole relay processes. Nat Commun 6:732710.1038/ncomms8327 ↗
19. Gupta V, Bharti V, Kumar M, Chand S, Heeger AJ (2015) Polymer–polymer förster resonance energy transfer significantly boosts the power conversion efficiency of bulk-heterojunction solar cells. Adv Mater 27:4398–440410.1002/adma.201501275 ↗
20. Benten H, Nishida T, Mori D, Xu H, Ohkita H, Ito S (2016) High-performance ternary blend all-polymer solar cells with complementary absorption bands from visible to near-infrared wavelengths. Energy Environ Sci 9:135–14010.1039/C5EE03460D ↗
21. Cheng P, Yan C, Wu Y et al (2016) Alloy acceptor: superior alternative to PCBM toward efficient and stable organic solar cells. Adv Mater 28:8021–802810.1002/adma.201602067 ↗
22. Street RA, Khlyabich PP, Rudenko AE, Thompson BC (2014) Electronic states in dilute ternary blend organic bulk heterojunction solar cells. J Phys Chem C 118:26569–2657610.1021/jp5088724 ↗
23. Yang L, Zhou H, Price SC, You W (2012) Parallel-like bulk heterojunction polymer solar cells. J Am Chem Soc 134:5432–543510.1021/ja211597w ↗
24. Street RA, Davies D, Khlyabich PP, Burkhart B, Thompson BC (2013) Origin of the tunable open-circuit voltage in ternary blend bulk heterojunction organic solar cells. J Am Chem Soc 135:986–98910.1021/ja3112143 ↗
25. Goh T, Huang JS, Yager KG et al (2016) Quaternary organic solar cells enhanced by cocrystalline squaraines with power conversion efficiencies >10%. Adv Energy Mater 6:160066010.1002/aenm.201600660 ↗
26. Gasparini N, Jiao X, Heumueller T et al (2016) Designing ternary blend bulk heterojunction solar cells with reduced carrier recombination and a fill factor of 77%. Nat Energy 1:1611810.1038/nenergy.2016.118 ↗
27. Nian L, Gao K, Liu F et al (2016) 11% efficient ternary organic solar cells with high composition tolerance via integrated near-IR sensitization and interface engineering. Adv Mater 28:8184–819010.1002/adma.201602834 ↗
28. Zhang G, Zhang K, Yin Q et al (2017) High-performance ternary organic solar cell enabled by a thick active layer containing a liquid crystalline small molecule donor. J Am Chem Soc 139:2387–239510.1021/jacs.6b11991 ↗
29. Petr PK, Andrey ER, Robert AS, Barry CT (2014) Influence of polymer compatibility on the open-circuit voltage in ternary blend bulk heterojunction solar cells. ACS Appl Mater Interfaces 6:9913–991910.1021/am502122a ↗
30. Kim W, Kim JK, Kim E, Ahn TK, Wang DH, Park JH (2015) Conflicted effects of a solvent additive on PTB7:PC71BM bulk heterojunction solar cells. J Phys Chem C 119:5954–596110.1021/jp510996w ↗
31. Pearson AJ, Hopkinson PE, Couderc E, Domanski K, Abdi-Jalebi M, Greenham NC (2016) Critical light instability in CB/DIO processed PBDTTT-EFT:PC71BM organic photovoltaic devices. Org Electron 30:225–23610.1016/j.orgel.2015.12.024 ↗
32. Tremolet de Villers BJ, O’Hara KA, Ostrowski DP et al (2016) Removal of residual diiodooctane improves photostability of high-performance organic solar cell polymers. J Chem Mater 28:876–88410.1021/acs.chemmater.5b04346 ↗
33. Lee S, Kong J, Lee K (2016) Air-stable organic solar cells using an iodine-free solvent additive. Adv Energy Mater 6:160097010.1002/aenm.201600970 ↗