Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors
Abstract The orientational control of semiconducting polymers (SCPs) in floating films offers several advantages over conventional solution‐processing methods for device fabrication, and the unidirectional floating film transfer method (UFTM) has been applied to fabricate large‐area oriented p‐type...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202201043 |
| _version_ | 1797772511201460224 |
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| author | Manish Pandey Yuya Sugita Jumpei Toyoda Shohei Katao Ryo Abe Yongyoon Cho Hiroaki Benten Masakazu Nakamura |
| author_facet | Manish Pandey Yuya Sugita Jumpei Toyoda Shohei Katao Ryo Abe Yongyoon Cho Hiroaki Benten Masakazu Nakamura |
| author_sort | Manish Pandey |
| collection | DOAJ |
| description | Abstract The orientational control of semiconducting polymers (SCPs) in floating films offers several advantages over conventional solution‐processing methods for device fabrication, and the unidirectional floating film transfer method (UFTM) has been applied to fabricate large‐area oriented p‐type SCP films. Here, UFTM can be used to prepare high‐performance n‐type SCP films of P(NDI2OD‐T2) is reported. A strong correlation between the degree of polymer orientation and the solvent used for the preparation of P(NDI2OD‐T2) floating films is observed. In particular, the size of the nanofibers aligned along the orientation direction prepared using chloroform is dramatically increased by adding a small amount of chlorobenzene. Microstructural characterization reveals that the P(NDI2OD‐T2) floating films are uniaxially aligned with edge‐on orientation, whereas the spin‐coated films are isotropic with face‐on orientation. Notably, the floating films of P(NDI2OD‐T2) prepared with solvent blending have higher electron mobility with ambipolar‐like device characteristics and high threshold voltage (VTH) of ≈25 V. Finally, using the one‐step immersion process, the introduction of an interlayer of hexa(ethylene glycol)‐dithiol between the source/drain contacts and P(NDI2OD‐T2) film results in a drastic improvement in device, giving unipolar n‐channel transistor characteristics with a VTH of ≈0 V, on/off ratio of >105, and mobility reliability factor of almost 100%. |
| first_indexed | 2024-03-12T21:52:57Z |
| format | Article |
| id | doaj.art-386172f545634b3d9f6dae2dc1478adb |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-12T21:52:57Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-386172f545634b3d9f6dae2dc1478adb2023-07-26T01:35:30ZengWiley-VCHAdvanced Electronic Materials2199-160X2023-02-0192n/an/a10.1002/aelm.202201043Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic TransistorsManish Pandey0Yuya Sugita1Jumpei Toyoda2Shohei Katao3Ryo Abe4Yongyoon Cho5Hiroaki Benten6Masakazu Nakamura7Division of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanDivision of Materials Science Nara Institute of Science and Technology 8916‐5 Takayama‐cho Ikoma Nara 630‐0192 JapanAbstract The orientational control of semiconducting polymers (SCPs) in floating films offers several advantages over conventional solution‐processing methods for device fabrication, and the unidirectional floating film transfer method (UFTM) has been applied to fabricate large‐area oriented p‐type SCP films. Here, UFTM can be used to prepare high‐performance n‐type SCP films of P(NDI2OD‐T2) is reported. A strong correlation between the degree of polymer orientation and the solvent used for the preparation of P(NDI2OD‐T2) floating films is observed. In particular, the size of the nanofibers aligned along the orientation direction prepared using chloroform is dramatically increased by adding a small amount of chlorobenzene. Microstructural characterization reveals that the P(NDI2OD‐T2) floating films are uniaxially aligned with edge‐on orientation, whereas the spin‐coated films are isotropic with face‐on orientation. Notably, the floating films of P(NDI2OD‐T2) prepared with solvent blending have higher electron mobility with ambipolar‐like device characteristics and high threshold voltage (VTH) of ≈25 V. Finally, using the one‐step immersion process, the introduction of an interlayer of hexa(ethylene glycol)‐dithiol between the source/drain contacts and P(NDI2OD‐T2) film results in a drastic improvement in device, giving unipolar n‐channel transistor characteristics with a VTH of ≈0 V, on/off ratio of >105, and mobility reliability factor of almost 100%.https://doi.org/10.1002/aelm.202201043donor–acceptorfloating filmn‐channel transistorsorganic transistorsP(NDI2OD‐T2)semiconducting polymers |
| spellingShingle | Manish Pandey Yuya Sugita Jumpei Toyoda Shohei Katao Ryo Abe Yongyoon Cho Hiroaki Benten Masakazu Nakamura Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors Advanced Electronic Materials donor–acceptor floating film n‐channel transistors organic transistors P(NDI2OD‐T2) semiconducting polymers |
| title | Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors |
| title_full | Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors |
| title_fullStr | Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors |
| title_full_unstemmed | Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors |
| title_short | Unidirectionally Aligned Donor–Acceptor Semiconducting Polymers in Floating Films for High‐Performance Unipolar n‐Channel Organic Transistors |
| title_sort | unidirectionally aligned donor acceptor semiconducting polymers in floating films for high performance unipolar n channel organic transistors |
| topic | donor–acceptor floating film n‐channel transistors organic transistors P(NDI2OD‐T2) semiconducting polymers |
| url | https://doi.org/10.1002/aelm.202201043 |
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