Paper Info
Title
Low-Power Organic Light Sensor Array Based on Active-Matrix Common-Gate Transimpedance Amplifier on Foil for Imaging Applications
Abstract
This article presents a 57.6-μW mechanically flexible active-matrix imaging system based on a 4 × 5 array of light sensors, each composed of a photodetector (PD) using a light-sensitive organic polymer and a transimpedance amplifier (TIA) based on organic thin-film transistors and integrated thin-film carbon resistors. The PDs and the electronics are fabricated on separate plastic films and integrated into a system. Two different topologies for the TIA are designed, implemented, and characterized. The first topology is a self-biased TIA based on a gain-boosted operational amplifier (op-amp), providing an open-loop dc gain of 41.3 dB. This op-amp-based TIA, with a feedback resistor, provides stable current-to-voltage conversion (0-100 μA and 2.0-3.7 V) at frequencies up to 300 Hz. The second topology is a low-power gain-boosted common-gate (GB CG) TIA that performs current-to-voltage conversion with a nonlinearity as small as ±0.3% within a bandwidth of 1 kHz. The output voltages of the light sensors are read and converted into a 4 × 5 pixel gray-scale image displayed on a computer monitor to visualize the functionality of the system.
Year
DOI
Venue
2020
10.1109/JSSC.2020.2993732
IEEE Journal of Solid-State Circuits
Keywords
DocType
Volume
Gain-boosted common-gate transimpedance amplifier (GB CG TIA),operational amplifier (op-amp),organic imaging,organic light sensor,organic photodetector (OPD),organic thin-film transistors (TFTs),transimpedance amplifier (TIA)
Journal
55
Issue
ISSN
Citations 
9
0018-9200
0
PageRank 
References 
Authors
0.34
3
12
Name
Order
Citations
PageRank
Samar Elsaegh100.34
Clemens Veit200.34
Ute Zschieschang39123.61
Mohammad Amayreh441.94
Florian Letzkus551.53
Holger Sailer600.34
Michael Jurisch700.34
J. N. Burghartz82224.18
Uli Wurfel900.34
Hagen Klauk109124.62
Hans Zappe1121.43
Yiannos Manoli12523105.73