Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors
Organic electronics became an attractive alternative for practical applications in complementary logic circuits due to the unique features of organic semiconductors such as solution processability and ease of large-area manufacturing. Bulk heterojunctions (BHJ), consisting of a blend of two organic...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/11/2662 |
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| author | Julia Fidyk Witold Waliszewski Piotr Sleczkowski Adam Kiersnowski Wojciech Pisula Tomasz Marszalek |
| author_facet | Julia Fidyk Witold Waliszewski Piotr Sleczkowski Adam Kiersnowski Wojciech Pisula Tomasz Marszalek |
| author_sort | Julia Fidyk |
| collection | DOAJ |
| description | Organic electronics became an attractive alternative for practical applications in complementary logic circuits due to the unique features of organic semiconductors such as solution processability and ease of large-area manufacturing. Bulk heterojunctions (BHJ), consisting of a blend of two organic semiconductors of different electronic affinities, allow fabrication of a broad range of devices such as light-emitting transistors, light-emitting diodes, photovoltaics, photodetectors, ambipolar transistors and sensors. In this work, the charge carrier transport of BHJ films in field-effect transistors is switched from electron to hole domination upon processing and post-treatment. Low molecular weight n-type N,N′-bis(n-octyl)-(1,7&1,6)-dicyanoperylene-3,4:9,10-bis(dicarboximide) (PDI8-CN<sub>2</sub>) was blended with p-type poly[2,5-bis(3-tetradecylthiophene-2-yl)thieno[3,2-b]thiophene] (PBTTT-C<sub>14</sub>) and deposited by spin-coating to form BHJ films. Systematic investigation of the role of rotation speed, solution temperature, and thermal annealing on thin film morphology was performed using atomic force microscopy, scanning electron microscopy, and grazing incidence wide-angle X-ray scattering. It has been determined that upon thermal annealing the BHJ morphology is modified from small interconnected PDI8-CN<sub>2</sub> crystals uniformly distributed in the polymer fraction to large planar PDI8-CN2 crystal domains on top of the blend film, leading to the switch from electron to hole transport in field-effect transistors. |
| first_indexed | 2024-03-10T14:55:50Z |
| format | Article |
| id | doaj.art-668814bc443743a78b7517cd77dda81f |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T14:55:50Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-668814bc443743a78b7517cd77dda81f2023-11-20T20:36:33ZengMDPI AGPolymers2073-43602020-11-011211266210.3390/polym12112662Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect TransistorsJulia Fidyk0Witold Waliszewski1Piotr Sleczkowski2Adam Kiersnowski3Wojciech Pisula4Tomasz Marszalek5Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, PolandDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, PolandDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, PolandLeibniz Institute of Polymer Research, Hohe Str. 6, 01069 Dresden, GermanyDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, PolandDepartment of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, PolandOrganic electronics became an attractive alternative for practical applications in complementary logic circuits due to the unique features of organic semiconductors such as solution processability and ease of large-area manufacturing. Bulk heterojunctions (BHJ), consisting of a blend of two organic semiconductors of different electronic affinities, allow fabrication of a broad range of devices such as light-emitting transistors, light-emitting diodes, photovoltaics, photodetectors, ambipolar transistors and sensors. In this work, the charge carrier transport of BHJ films in field-effect transistors is switched from electron to hole domination upon processing and post-treatment. Low molecular weight n-type N,N′-bis(n-octyl)-(1,7&1,6)-dicyanoperylene-3,4:9,10-bis(dicarboximide) (PDI8-CN<sub>2</sub>) was blended with p-type poly[2,5-bis(3-tetradecylthiophene-2-yl)thieno[3,2-b]thiophene] (PBTTT-C<sub>14</sub>) and deposited by spin-coating to form BHJ films. Systematic investigation of the role of rotation speed, solution temperature, and thermal annealing on thin film morphology was performed using atomic force microscopy, scanning electron microscopy, and grazing incidence wide-angle X-ray scattering. It has been determined that upon thermal annealing the BHJ morphology is modified from small interconnected PDI8-CN<sub>2</sub> crystals uniformly distributed in the polymer fraction to large planar PDI8-CN2 crystal domains on top of the blend film, leading to the switch from electron to hole transport in field-effect transistors.https://www.mdpi.com/2073-4360/12/11/2662organic electronicsbulk heterojunctioncharge carrier transportorganic field-effect transistorfilm morphology |
| spellingShingle | Julia Fidyk Witold Waliszewski Piotr Sleczkowski Adam Kiersnowski Wojciech Pisula Tomasz Marszalek Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors Polymers organic electronics bulk heterojunction charge carrier transport organic field-effect transistor film morphology |
| title | Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors |
| title_full | Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors |
| title_fullStr | Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors |
| title_full_unstemmed | Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors |
| title_short | Switching from Electron to Hole Transport in Solution-Processed Organic Blend Field-Effect Transistors |
| title_sort | switching from electron to hole transport in solution processed organic blend field effect transistors |
| topic | organic electronics bulk heterojunction charge carrier transport organic field-effect transistor film morphology |
| url | https://www.mdpi.com/2073-4360/12/11/2662 |
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