Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine
In this work, the topic of the detrimental contact effects in organic thin-film transistors (OTFTs) is revisited. In this case, contact effects are considered as a tool to enhance the characterization procedures of OTFTs, achieving more accurate values for the fundamental parameters of the transisto...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/10/10/683 |
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| author | Juan A. Jiménez-Tejada Adrián Romero Jesús González Nandu B. Chaure Andrew N. Cammidge Isabelle Chambrier Asim K. Ray M. Jamal Deen |
| author_facet | Juan A. Jiménez-Tejada Adrián Romero Jesús González Nandu B. Chaure Andrew N. Cammidge Isabelle Chambrier Asim K. Ray M. Jamal Deen |
| author_sort | Juan A. Jiménez-Tejada |
| collection | DOAJ |
| description | In this work, the topic of the detrimental contact effects in organic thin-film transistors (OTFTs) is revisited. In this case, contact effects are considered as a tool to enhance the characterization procedures of OTFTs, achieving more accurate values for the fundamental parameters of the transistor threshold voltage, carrier mobility and on-off current ratio. The contact region is also seen as a fundamental part of the device which is sensitive to physical, chemical and fabrication variables. A compact model for OTFTs, which includes the effects of the contacts, and a recent proposal of an associated evolutionary parameter extraction procedure are reviewed. Both the model and the procedure are used to assess the effect of the annealing temperature on a nickel-1,4,8,11,15,18,22,25-octakis(hexyl)phthalocyanine (NiPc<sub>6</sub>)-based OTFT. A review of the importance of phthalocyanines in organic electronics is also provided. The characterization of the contact region in NiPc<sub>6</sub> OTFTs complements the results extracted from other physical−chemical techniques such as differential scanning calorimetry or atomic force microscopy, in which the transition from crystal to columnar mesophase imposes a limit for the optimum performance of the annealed OTFTs. |
| first_indexed | 2024-04-12T08:41:31Z |
| format | Article |
| id | doaj.art-38d9e349a441437391fb9f92e57910f4 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-04-12T08:41:31Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-38d9e349a441437391fb9f92e57910f42022-12-22T03:39:50ZengMDPI AGMicromachines2072-666X2019-10-01101068310.3390/mi10100683mi10100683Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel PhthalocyanineJuan A. Jiménez-Tejada0Adrián Romero1Jesús González2Nandu B. Chaure3Andrew N. Cammidge4Isabelle Chambrier5Asim K. Ray6M. Jamal Deen7Departamento de Electrónica y Tecnología de los Computadores, Centro de Investigación en Tecnologías de la Información y de las Comunicaciones (CITIC), Universidad de Granada, 18071 Granada, SpainDepartamento de Electrónica y Tecnología de los Computadores, Centro de Investigación en Tecnologías de la Información y de las Comunicaciones (CITIC), Universidad de Granada, 18071 Granada, SpainDepartamento de Arquitectura y Tecnología de Computadores, Centro de Investigación en Tecnologías de la Información y de las Comunicaciones (CITIC), Universidad de Granada, 18071 Granada, SpainDepartment of Physics, Savitribai Phule Pune University, Pune 411007, IndiaSchool of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UKSchool of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UKDepartment of Electronic and Computer Engineering, Brunel University London, Uxbridge UB8 3PH, UKDepartment of Electrical and Computer Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4K1, CanadaIn this work, the topic of the detrimental contact effects in organic thin-film transistors (OTFTs) is revisited. In this case, contact effects are considered as a tool to enhance the characterization procedures of OTFTs, achieving more accurate values for the fundamental parameters of the transistor threshold voltage, carrier mobility and on-off current ratio. The contact region is also seen as a fundamental part of the device which is sensitive to physical, chemical and fabrication variables. A compact model for OTFTs, which includes the effects of the contacts, and a recent proposal of an associated evolutionary parameter extraction procedure are reviewed. Both the model and the procedure are used to assess the effect of the annealing temperature on a nickel-1,4,8,11,15,18,22,25-octakis(hexyl)phthalocyanine (NiPc<sub>6</sub>)-based OTFT. A review of the importance of phthalocyanines in organic electronics is also provided. The characterization of the contact region in NiPc<sub>6</sub> OTFTs complements the results extracted from other physical−chemical techniques such as differential scanning calorimetry or atomic force microscopy, in which the transition from crystal to columnar mesophase imposes a limit for the optimum performance of the annealed OTFTs.https://www.mdpi.com/2072-666X/10/10/683contact effectsevolutionary multi-objective optimizationmodelingnickel phthalocyaninethin-film transistordevice parameters |
| spellingShingle | Juan A. Jiménez-Tejada Adrián Romero Jesús González Nandu B. Chaure Andrew N. Cammidge Isabelle Chambrier Asim K. Ray M. Jamal Deen Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine Micromachines contact effects evolutionary multi-objective optimization modeling nickel phthalocyanine thin-film transistor device parameters |
| title | Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine |
| title_full | Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine |
| title_fullStr | Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine |
| title_full_unstemmed | Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine |
| title_short | Evolutionary Computation for Parameter Extraction of Organic Thin-Film Transistors Using Newly Synthesized Liquid Crystalline Nickel Phthalocyanine |
| title_sort | evolutionary computation for parameter extraction of organic thin film transistors using newly synthesized liquid crystalline nickel phthalocyanine |
| topic | contact effects evolutionary multi-objective optimization modeling nickel phthalocyanine thin-film transistor device parameters |
| url | https://www.mdpi.com/2072-666X/10/10/683 |
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