Experiment study and analytical modeling of fully solution processed organic thin film transistors with conductive polymer top-gate electrode: Performance optimization. (April 2023)

• Record Type: Journal Article
• Authors: Wageh, S.; Boukhili, W.; Alshammari, Abdullah S.; Al-Ghamdi, Ahmed
• Is Part Of: Materials science in semiconductor processing. Volume 157(2023)
• Publication Date: 2023-04
• Subjects: Polymer gate electrode -- OTFTs -- Silver nanoparticles -- Laser-sintering -- Parameters extraction -- Modeling; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2023.107325
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: In this paper, various fully solution-processed top-gate bottom contacts organic thin-film transistors based on printed silver nanoparticles electrodes were fabricated, electrically characterized, and analytically modeled. The performance of the designed devices thermally and laser sintered nanoparticles electrodes was investigated. The device based on electrode sintered thermally exhibits improved contacts with an on/off ratio of 1.6 × 10 3 and a saturation mobility of 1.23 × 10 −2 cm 2 V −1 s −1 . The current–voltage characteristics of OTFTs in terms of the transfer and output characteristics were also modeled and reproduced using an analytical model. Furthermore, various effects were considered in the used model, including the channel length modulation and contact resistance effects as well as field-effect mobility dependence of the gate voltage. The proposed model results for the devices were found to be in a good agreement with the experimental data in terms of the transfer and output characteristics. It was found that the used analytical model correctly describes the electrical characteristics, and it is proved to be accurate enough to explain the charge transport in these types of OTFTs. The development of such model will certainly help in the design of high-performance nanomaterials based OTFTs and their future advancement as well. Highlights: Fully solution-processed OTFTs based on thermally and optically treated silver nanoparticles electrodes were characterized and modeled. The fabricated OTFTs show high performance suitable for flexible and printed electronics applications. The results of the proposed model show good agreement with the experimental data. The proposed model can be utilized to optimize the performance of OTFTs and improve it further.