Low-Power Organic Light Sensor Array Based on Active-Matrix Common-Gate Transimpedance Amplifier on Foil for Imaging Applications

被引：19

作者：

Elsaegh, Samar ^{[1
]}

Veit, Clemens ^{[2
]}

Zschieschang, Ute ^{[3
]}

Amayreh, Mohammad ^{[1
]}

Letzkus, Florian ^{[4
]}

Sailer, Holger ^{[4
]}

Jurisch, Michael ^{[4
]}

Burghartz, Joachim N. ^{[4
]}

Wuerfel, Uli ^{[2
]}

Klauk, Hagen ^{[3
]}

Zappe, Hans ^{[1
]}

Manoli, Yiannos ^{[1
,5
]}

机构：

[1] Univ Freiburg, IMTEK, D-79110 Freiburg, Germany

[2] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany

[3] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[4] Inst Mikroelekt IMS CHIPS, D-70569 Stuttgart, Germany

[5] Hahn Schickard, D-78052 Villingen Schwenningen, Germany

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2020年 / 55卷 / 09期

关键词：

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); THIN-FILM TRANSISTORS; LARGE-AREA; PHOTODIODES; READOUT; CIRCUIT; TFTS;

D O I：

10.1109/JSSC.2020.2993732

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article presents a 57.6-mu W mechanically flexible active-matrix imaging system based on a 4 x 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 mu A 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 x 5 pixel gray-scale image displayed on a computer monitor to visualize the functionality of the system.

引用

页码：2553 / 2566

页数：14