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Exploring Light Stability and Trapping Mechanisms in Organic Thin-Film Transistors for High-Brightness MicroLED Integration

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Název: Exploring Light Stability and Trapping Mechanisms in Organic Thin-Film Transistors for High-Brightness MicroLED Integration
Autoři: Chia-Hung Tsai, Yang-En Wu, Chuan-Wei Kuo, Ting-Chang Chang, Li-Yin Chen, Fang-Chung Chen, Hao-Chung Kuo
Zdroj: Materials ; Volume 17 ; Issue 22 ; Pages: 5643
Informace o vydavateli: Multidisciplinary Digital Publishing Institute
Rok vydání: 2024
Sbírka: MDPI Open Access Publishing
Témata: organic thin-film transistors (OTFTs), monolithic MicroLED integration, charge-trapping mechanisms, light-induced trapping, suppression of photo-induced charges
Popis: Organic thin-film transistors (OTFTs), benefiting from a low-temperature process (≤120 °C), offer a promising approach for the monolithic integration of MicroLED structures through organic-last integration. Previous research has demonstrated that small-molecule/polymer binder-based organic semiconductor deposition, utilizing the vertical phase separation mechanism, can achieve good device uniformity while preserving high field-effect carrier mobility. However, the stability of OTFTs under light exposure at the device level remains underexplored. This study investigates the effects of various light irradiation conditions on OTFTs and delves into the underlying mechanisms of the light-trapping effect. Based on these findings, we propose an optimal OTFT design tailored for driving MicroLED displays at high operational brightness, ensuring both performance and stability.
Druh dokumentu: text
Popis souboru: application/pdf
Jazyk: English
Relation: Electronic Materials; https://dx.doi.org/10.3390/ma17225643
DOI: 10.3390/ma17225643
Dostupnost: https://doi.org/10.3390/ma17225643
Rights: https://creativecommons.org/licenses/by/4.0/
Přístupové číslo: edsbas.EDFCDB0B
Databáze: BASE
Popis
Abstrakt:Organic thin-film transistors (OTFTs), benefiting from a low-temperature process (≤120 °C), offer a promising approach for the monolithic integration of MicroLED structures through organic-last integration. Previous research has demonstrated that small-molecule/polymer binder-based organic semiconductor deposition, utilizing the vertical phase separation mechanism, can achieve good device uniformity while preserving high field-effect carrier mobility. However, the stability of OTFTs under light exposure at the device level remains underexplored. This study investigates the effects of various light irradiation conditions on OTFTs and delves into the underlying mechanisms of the light-trapping effect. Based on these findings, we propose an optimal OTFT design tailored for driving MicroLED displays at high operational brightness, ensuring both performance and stability.
DOI:10.3390/ma17225643