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The influence of visible light on the gate bias instability of In–Ga–Zn–O thin film transistors by Sangwook Kim; Sunil Kim; Changjung Kim; JaeChul Park; Ihun Song; Sanghun Jeon; Seung-Eon Ahn; Jin-Seong Park; Jae Kyeong Jeong is a Engineering article available to read on EtoBox.

What is The influence of visible light on the gate bias instability of In–Ga–Zn–O thin film transistors about?

We investigated the effect of photon irradiation with various energies on the gate bias instability of indium-gallium-zinc oxide transistors. The illumination of red and green light on the transistor caused positive threshold voltage (V th ) shifts of 0.23 V and 0.18 V, respectively, while it did not affect the V th value in blue light after a positive bias stress. However, the stability of transistors was deteriorated with increasing photon energy after a negative bias stress: negative V th shifts for red (À0.23 V) and blue light (À3.7 V). This difference can be explained by the compensation effect of the electron carrier trapping and the creation of meta-stable donors via photon excitation.

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Author

Sangwook Kim; Sunil Kim; Changjung Kim; JaeChul Park; Ihun Song; Sanghun Jeon; Seung-Eon Ahn; Jin-Seong Park; Jae Kyeong Jeong

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0038-1101)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)