A novel ultra large size organic light emitting diode display for premium televisions

Shin, Hong Jae; Kim, Yong Ho; Kim, Dong Myoung; Yun, Seong Ho; Bae, Sung Joon; Kim, Han Seop; Lee, Hyeon Woo; Oh, Chang Ho

doi:10.1002/jsid.1213

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…However, a reliable p-type ZnO has not yet been reported [25]. Nonetheless, in the case of IGZO (a mixture of In 2 O 3 , Ga 2 O 3 , and ZnO), although it exhibits n-type characteristics, it is commercially utilized as the channel layer of the thin film transistor (TFT) in large organic light-emitting devices, due to its reliability under operating voltage and current conditions [26,27].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Conversion Efficiency in MAPbI3 Perovskite Solar Cells through Parameters Optimization via SCAPS-1D Simulation

Son,

Jeong

2024

Applied Sciences

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In this study, various factors affecting the efficiency of the MAPbI3 perovskite solar cell (PSC) were analyzed using the SCAPS-1D simulation program. The basic device analyzed in this study had a structure of ITO/TiO2/MAPbI3/Cu2O/Au. The thickness of each layer (electron transport layer (ETL), perovskite absorption layer (PAL), and hole transport layer (HTL)), PAL defect density and interface defect density were investigated as parameters. The optimized parameters that yielded the highest light conversion efficiency were an ETL (TiO2) thickness of 100 nm, a PAL (MAPbI3) thickness of 1300 nm, an HTL (Cu2O) thickness of 400 nm, a PAL defect density of 1014 cm−3, and an interface defect density of 1013 cm−3 for both absorber/ETL and absorber/HTL interfaces. The optimized PSC exhibited a maximum efficiency of 19.30%. These results obtained in this study are expected to contribute considerably to the optimization and efficiency improvement of perovskite solar cells using inorganic charge-carrier transport layers.

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Section: Introductionmentioning

confidence: 99%

Enhanced Conversion Efficiency in MAPbI3 Perovskite Solar Cells through Parameters Optimization via SCAPS-1D Simulation

Son,

Jeong

2024

Applied Sciences

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Region‐selective shift register by a single output enable signal for a multiple refresh frequency driving scheme

Chang,

Kim,

Nam

2024

J Soc Info Display

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Many low‐power technologies have been developed for high‐performance displays. One method is to vary the refresh rate according to the input image, where frequencies are reduced over still images and slow‐moving videos. To support the variable refresh rate scheme, the programmable gate driver circuit should be integrated. This paper proposes a thin‐film transistor (TFT) shift register of which output pulse is simply controlled by an enable signal. Because the output pulse generation is directly adjusted without the previous programming period, various output pulse sequences are possible with the high flexibility. The shift register is composed by adding six TFTs and one capacitor to a conventional circuit that provides a carry pulse to a next stage. The simulation program with integrated circuit emphasis (SPICE) simulation ensures that gate pulses for any numbers of lines in any regions can be generated within one frame only by applying the enable signal at the corresponding timing, resulting in multiple refresh frequencies in a screen. In addition, it is verified that additional TFTs and capacitor contribute to only the negligible increase in power consumption by 2.1%, compared to a conventional shift register.

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Recent progress in liquid crystal devices and materials of TFT-LCDs

Jung,

Park,

Jung

et al. 2023

Journal of Information Display

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A novel ultra large size organic light emitting diode display for premium televisions

Cited by 3 publications

References 18 publications

Enhanced Conversion Efficiency in MAPbI3 Perovskite Solar Cells through Parameters Optimization via SCAPS-1D Simulation

Enhanced Conversion Efficiency in MAPbI3 Perovskite Solar Cells through Parameters Optimization via SCAPS-1D Simulation

Region‐selective shift register by a single output enable signal for a multiple refresh frequency driving scheme

Recent progress in liquid crystal devices and materials of TFT-LCDs

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