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Sub-kT/q Subthreshold-Slope Using Negative Capacitance in Low-Temperature Polycrystalline-Silicon Thin-Film Transistor.


ABSTRACT: Realizing a low-temperature polycrystalline-silicon (LTPS) thin-film transistor (TFT) with sub-kT/q subthreshold slope (SS) is significantly important to the development of next generation active-matrix organic-light emitting diode displays. This is the first time a sub-kT/q SS (31.44?mV/dec) incorporated with a LTPS-TFT with polycrystalline-Pb(Zr,Ti)O3 (PZT)/ZrTiO4 (ZTO) gate dielectrics has been demonstrated. The sub-kT/q SS was observed in the weak inversion region at -0.5?V showing ultra-low operating voltage with the highest mobility (250.5?cm(2)/Vsec) reported so far. In addition, the reliability of DC negative bias stress, hot carrier stress and self-heating stress in LTPS-TFT with negative capacitance was investigated for the first time. It was found that the self-heating stress showed accelerated SS degradation due to the PZT Curie temperature.

SUBMITTER: Park JH 

PROVIDER: S-EPMC4838852 | biostudies-other | 2016 Apr

REPOSITORIES: biostudies-other

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Predictors of non-attendance at outpatient endoscopy: a five-year multi-centre observational study from New Zealand.

Lamba Mehul M   Alamri Yassar Y   Garg Paras P   Frampton Chris C   Rowbotham David D   Gearry Richard R  

The New Zealand medical journal 20190607 1496


<h4>Aims</h4>Outpatient endoscopy non-attendance leads to diagnostic delay and increasing wait times. We aimed to analyse endoscopy non-attendance rates and factors associated with it at the Canterbury and Auckland District Health Boards during a five-year period.<h4>Methods</h4>Consecutive appointments between April 2012 and March 2017 were assessed. The following procedures were included: gastroscopy, colonoscopy and endoscopic retrograde cholangiopancreatography. Predictors of non-attendance  ...[more]

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