NDLI: TFT-based, multi-stage, active pixel sensor for alpha particle detection

Content Provider	IET Digital Library
Author	Kunnen, G. Smith, J. Chung, H. Allee, D.
Abstract	A multi-stage thin film transistor (TFT)-based active pixel sensor (APS), capable of successfully detecting small impulses of charge resulting from incident alpha particle strikes, is presented. Detection of alpha particles is important in the field of neutron detection, where fully integrated thin-film-based detectors are an attractive alternative to conventional 3He-based proportional counters owing to their low-cost and large-area scaling capability, combined with the use of readily available materials. A typical TFT process, however, produces only N-type devices with low electron mobilities – making high-gain CMOS amplifier designs unfeasible. The disadvantages of using a TFT-only APS design are mitigated by cascading multiple low-gain TFT amplifiers, which results in a higher overall pixel gain – subsequently allowing for the successful detection and readout of alpha particle strikes. Presented is a new APS fabricated in an indium gallium zinc oxide TFT process is presented, and successful initial alpha response measurements are reported.
Starting Page	705
Ending Page	706
Page Count	2
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 9, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.0259
Journal	Electronics Letters
Publisher Date	2014-04-22
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Alpha Particle Detection Amplifiers APS Cascading Multiple Low-gain TFT Amplifier Charge Impulse Detection Electron Mobility Field Effect Device Gallium Compound He-based Proportional Counter High-gain CMOS Amplifier Design Indium Compound InGaZnO Integrated Thin-film-based Detector N-type Device Neutron Detection Particle And Radiation Detection And Measurement Particle Detector Readout Electronics Scaling Capability Sensing Device And Transducers Sensor Fusion TFT-based Multistage Active Pixel Sensor Thin Film Sonsor Thin Film Transistor Thin Film Transistors
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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