Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory
Abstract Conjugated polymers are of interest for next‐generation electronics due to their improved flexibility, low cost, and solution processability. However, a conjugated polymer is not a chemically “pure” material because the polymer chains are polydispersed in terms of molecular weights and/or c...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2020-04-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.201901156 |
| _version_ | 1797656150862200832 |
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| author | Peng Wei Xianglong Li Lei Wang Nannan Liu Shi He Yurong Ren Yuanwei Zhu Yaodong Yang Guanghao Lu Laju Bu |
| author_facet | Peng Wei Xianglong Li Lei Wang Nannan Liu Shi He Yurong Ren Yuanwei Zhu Yaodong Yang Guanghao Lu Laju Bu |
| author_sort | Peng Wei |
| collection | DOAJ |
| description | Abstract Conjugated polymers are of interest for next‐generation electronics due to their improved flexibility, low cost, and solution processability. However, a conjugated polymer is not a chemically “pure” material because the polymer chains are polydispersed in terms of molecular weights and/or chemical stereoregularities, leading to dispersions of both localized order and electronic properties. Taking advantage of these properties, a one‐step self‐refinement method is proposed to induce film‐depth‐resolved composition and aggregation gradient of conjugated‐polymer@insulator‐matrix for high‐performance organic field‐effect transistors and nonvolatile memories. During solvent evaporation, the higher ordered sub‐components of conjugated polymers are substantially enriched at the top surface of the blend film to form a morphologically continuous sublayer serving as high‐quality transport pathways to warrant high‐performance transistors. The less ordered sub‐components are distributed within insulator‐matrix in the bottom part of the film without connection with each other, which guarantees a reliable composite electret to help store sufficient immobilized charges to tune the operation of the device. Moreover, these conjugated‐polymer@insulator‐matrix films with insulator content as high as 95% show excellent optical transparency (>90%) and environmental stability (for months), which demonstrates great potential for use in transparent electronics. |
| first_indexed | 2024-03-11T17:25:13Z |
| format | Article |
| id | doaj.art-e30f8ae358a54858945bce36132b6a4e |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-11T17:25:13Z |
| publishDate | 2020-04-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-e30f8ae358a54858945bce36132b6a4e2023-10-19T05:02:13ZengWiley-VCHAdvanced Electronic Materials2199-160X2020-04-0164n/an/a10.1002/aelm.201901156Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and MemoryPeng Wei0Xianglong Li1Lei Wang2Nannan Liu3Shi He4Yurong Ren5Yuanwei Zhu6Yaodong Yang7Guanghao Lu8Laju Bu9School of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaSchool of Science, and Frontier Institute of Science and Technology Xi'an Jiaotong University Xi'an Shaanxi 710049 ChinaAbstract Conjugated polymers are of interest for next‐generation electronics due to their improved flexibility, low cost, and solution processability. However, a conjugated polymer is not a chemically “pure” material because the polymer chains are polydispersed in terms of molecular weights and/or chemical stereoregularities, leading to dispersions of both localized order and electronic properties. Taking advantage of these properties, a one‐step self‐refinement method is proposed to induce film‐depth‐resolved composition and aggregation gradient of conjugated‐polymer@insulator‐matrix for high‐performance organic field‐effect transistors and nonvolatile memories. During solvent evaporation, the higher ordered sub‐components of conjugated polymers are substantially enriched at the top surface of the blend film to form a morphologically continuous sublayer serving as high‐quality transport pathways to warrant high‐performance transistors. The less ordered sub‐components are distributed within insulator‐matrix in the bottom part of the film without connection with each other, which guarantees a reliable composite electret to help store sufficient immobilized charges to tune the operation of the device. Moreover, these conjugated‐polymer@insulator‐matrix films with insulator content as high as 95% show excellent optical transparency (>90%) and environmental stability (for months), which demonstrates great potential for use in transparent electronics.https://doi.org/10.1002/aelm.201901156organic field‐effect transistorsorganic memorypolymer blendspolymer electretsvertical phase separation |
| spellingShingle | Peng Wei Xianglong Li Lei Wang Nannan Liu Shi He Yurong Ren Yuanwei Zhu Yaodong Yang Guanghao Lu Laju Bu Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory Advanced Electronic Materials organic field‐effect transistors organic memory polymer blends polymer electrets vertical phase separation |
| title | Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory |
| title_full | Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory |
| title_fullStr | Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory |
| title_full_unstemmed | Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory |
| title_short | Vertical‐Resolved Composition and Aggregation Gradient of Conjugated‐Polymer@Insulator‐Matrix for Transistors and Memory |
| title_sort | vertical resolved composition and aggregation gradient of conjugated polymer insulator matrix for transistors and memory |
| topic | organic field‐effect transistors organic memory polymer blends polymer electrets vertical phase separation |
| url | https://doi.org/10.1002/aelm.201901156 |
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