Total subgap range density of states-based analysis of the effect of oxygen flow rate on the bias stress instabilities in a-IGZO TFTs

GW Yang, J Park, S Choi, C Kim… - … on Electron Devices, 2021 - ieeexplore.ieee.org
In this study, the oxygen flow rate (OFR) dependence of negative bias illumination stress
(NBIS) and positive bias stress (PBS) in amorphous indium-gallium-zinc-oxide (a-IGZO) thin …

Low voltage-driven oxide phototransistors with fast recovery, high signal-to-noise ratio, and high responsivity fabricated via a simple defect-generating process

MG Yun, YK Kim, CH Ahn, SW Cho, WJ Kang… - Scientific reports, 2016 - nature.com
We have demonstrated that photo-thin film transistors (photo-TFTs) fabricated via a simple
defect-generating process could achieve fast recovery, a high signal to noise (S/N) ratio, and …

Effect of wavelength and intensity of light on a-InGaZnO TFTs under negative bias illumination stress

WS Kim, YH Lee, YJ Cho, BK Kim… - ECS Journal of Solid …, 2016 - iopscience.iop.org
We investigated degradation mechanism of a-IGZO TFTs under NBIS with different
wavelengths λ and intensities IL of light. Negative gate bias was applied for 4000 s while …

A small-area and low-power scan driver using a coplanar a-IGZO thin-film transistor with a dual-gate for liquid crystal displays

DS Kim, OK Kwon - IEEE Electron Device Letters, 2016 - ieeexplore.ieee.org
This letter proposes a small-area and low-power scan driver using a coplanar amorphous
indium-gallium-zinc oxide (a-IGZO) thin-film transistor (TFT) with a dual gate for TFT liquid …

Hysteresis of transistor characteristics of amorphous IGZO TFTs studied by controlling measurement speed

YJ Chen, YH Tai - ECS Solid State Letters, 2015 - iopscience.iop.org
We investigate the hysteresis in the transfer characteristic of amorphous indium-gallium-zinc-
oxide thin-film transistor by controlling the sweep waveform of the gate voltage (Vg) provided …

Investigation of photo-induced hysteresis and off-current in amorphous In-Ga-Zn oxide thin-film transistors under UV light irradiation

SY Lee, JY Kwon, MK Han - IEEE transactions on electron …, 2013 - ieeexplore.ieee.org
We investigated the hysteresis and off-current (I off) of amorphous In-Ga-Zn oxide thin-film
transistors illuminated by 400 nm light at various intensities. Both hysteresis and I off are …

Improving the electrical and hysteresis performance of amorphous igzo thin-film transistors using co-sputtered zirconium silicon oxide gate dielectrics

CH Hung, SJ Wang, PY Liu, CH Wu, HP Yan… - Materials Science in …, 2017 - Elsevier
The use of co-sputtered Zirconium Silicon Oxide (Zr x Si 1− x O 2) gate dielectrics to improve
the performance of α-IGZO TFT is demonstrated. Through modulating the sputtering power …

Physical Insight Into Multiple Gate-Voltage Dependencies of Off-State Photocurrent in Amorphous InZnO Thin-Film Transistors

T Huang, H Liu, F Tang, L Lu, M Zhang… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
The multiple gate-voltage () dependencies of the OFF-state photocurrent () with increasing,
decreasing, or being constant are observed in amorphous InZnO (a-IZO) thin-film transistors …

Mechanism of hysteresis for a-IGZO TFT studied by changing the gate voltage waveform in measurement

YJ Chen, YH Tai, CY Chang - IEEE Transactions on Electron …, 2016 - ieeexplore.ieee.org
In this paper, we investigate the response time of oxygen vacancies on the hysteresis for the
amorphous indium–gallium–zinc oxide thin-film transistors. The fast pulse measurement …

Electrical Stability Modeling Based on Surface Potential for a-InGaZnO TFTs under Positive-Bias Stress and Light Illumination

X Huang, W Cao, C Huang, C Chen, Z Shi, W Xu - Micromachines, 2023 - mdpi.com
In this work, an electrical stability model based on surface potential is presented for
amorphous In-Ga-Zn-O (a-IGZO) thin film transistors (TFTs) under positive-gate-bias stress …