Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive
We investigated the effect of adding <i>p</i>-anisaldehyde (AA) solvent to the ink containing poly[[2,60-4,8-di(5-ethylhexylthienyl)benzo[1,2-b:3,3-b]dithiophene][3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]](PTB7-Th) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-ind...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/19/6358 |
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| author | Amira R. Alghamdi Bradley P. Kirk Guler Kocak Mats R. Andersson Gunther G. Andersson |
| author_facet | Amira R. Alghamdi Bradley P. Kirk Guler Kocak Mats R. Andersson Gunther G. Andersson |
| author_sort | Amira R. Alghamdi |
| collection | DOAJ |
| description | We investigated the effect of adding <i>p</i>-anisaldehyde (AA) solvent to the ink containing poly[[2,60-4,8-di(5-ethylhexylthienyl)benzo[1,2-b:3,3-b]dithiophene][3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]](PTB7-Th) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:20,30-d0]-s-indaceno[1,2-b:5,6-b0]-dithiophene(ITIC) on the morphology of the active layer. The present study focuses on determining the effect of the additive on the compositions at the surface of the PTB7-Th: ITIC composite and its morphology, forming one side of the interface of the blend with the MoO<sub>X</sub> electrode, and the influence of the structural change on the performance of devices. Studies of device performance show that the addition of the additive AA leads to an improvement in device performance. Upon the addition of AA, the concentration of PTB7-Th at the surface of the bulk heterojunction (BHJ) increases, causing an increase in surface roughness of the surface of the BHJ. This finding contributes to an understanding of the interaction between the donor material and high work function electrode/interface material. The implications for the interface are discussed. |
| first_indexed | 2024-03-09T21:26:11Z |
| format | Article |
| id | doaj.art-f4a8cddd174e4b98be1a75bc1bfaa122 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T21:26:11Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-f4a8cddd174e4b98be1a75bc1bfaa1222023-11-23T21:10:04ZengMDPI AGMolecules1420-30492022-09-012719635810.3390/molecules27196358Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an AdditiveAmira R. Alghamdi0Bradley P. Kirk1Guler Kocak2Mats R. Andersson3Gunther G. Andersson4Flinders Institute for Nanoscale Science and Technology, Flinders University, P.O. Box 2100, Adelaide, SA 5001, AustraliaFlinders Institute for Nanoscale Science and Technology, Flinders University, P.O. Box 2100, Adelaide, SA 5001, AustraliaFlinders Institute for Nanoscale Science and Technology, Flinders University, P.O. Box 2100, Adelaide, SA 5001, AustraliaFlinders Institute for Nanoscale Science and Technology, Flinders University, P.O. Box 2100, Adelaide, SA 5001, AustraliaFlinders Institute for Nanoscale Science and Technology, Flinders University, P.O. Box 2100, Adelaide, SA 5001, AustraliaWe investigated the effect of adding <i>p</i>-anisaldehyde (AA) solvent to the ink containing poly[[2,60-4,8-di(5-ethylhexylthienyl)benzo[1,2-b:3,3-b]dithiophene][3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]](PTB7-Th) and 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:20,30-d0]-s-indaceno[1,2-b:5,6-b0]-dithiophene(ITIC) on the morphology of the active layer. The present study focuses on determining the effect of the additive on the compositions at the surface of the PTB7-Th: ITIC composite and its morphology, forming one side of the interface of the blend with the MoO<sub>X</sub> electrode, and the influence of the structural change on the performance of devices. Studies of device performance show that the addition of the additive AA leads to an improvement in device performance. Upon the addition of AA, the concentration of PTB7-Th at the surface of the bulk heterojunction (BHJ) increases, causing an increase in surface roughness of the surface of the BHJ. This finding contributes to an understanding of the interaction between the donor material and high work function electrode/interface material. The implications for the interface are discussed.https://www.mdpi.com/1420-3049/27/19/6358<i>p</i>-anisaldehydeinterfaces in photovoltaic devicesbulk heterojunctiondonor and acceptor |
| spellingShingle | Amira R. Alghamdi Bradley P. Kirk Guler Kocak Mats R. Andersson Gunther G. Andersson Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive Molecules <i>p</i>-anisaldehyde interfaces in photovoltaic devices bulk heterojunction donor and acceptor |
| title | Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive |
| title_full | Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive |
| title_fullStr | Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive |
| title_full_unstemmed | Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive |
| title_short | Modification of the Surface Composition of PTB7-Th: ITIC Blend Using an Additive |
| title_sort | modification of the surface composition of ptb7 th itic blend using an additive |
| topic | <i>p</i>-anisaldehyde interfaces in photovoltaic devices bulk heterojunction donor and acceptor |
| url | https://www.mdpi.com/1420-3049/27/19/6358 |
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