Repository logo
 
No Thumbnail Available
Publication

A non-pixel image reader for continuous image detection based on tandem heterostructures

Use this identifier to reference this record.
Name:Description:Size:Format: 
A non-pixel image reader.pdf201.2 KBAdobe PDF Download

Advisor(s)

Abstract(s)

An optically addressed read-write sensor based on two stacked p-i-n heterojunctions is analyzed. The device is a two terminal image sensing structure. The charge packets are injected optically into the p-i-n writer and confined at the illuminated regions changing locally the electrical field profile across the p-i-n reader. An optical scanner is used for charge readout. The design allows a continuous readout without the need for pixel-level patterning. The role of light pattern and scanner wavelengths on the readout parameters is analyzed. The optical-to-electrical transfer characteristics show high quantum efficiency, broad spectral response, and reciprocity between light and image signal. A numerical simulation supports the imaging process. A black and white image is acquired with a resolution around 20 mum showing the potentiality of these devices for imaging applications.

Description

Keywords

Tandem structures Heterojunction Image sensor Electrical and numerical simulation

Citation

VIEIRA, Manuela; [et al] – A non-pixel image reader for continuous image detection based on tandem heterostructures. Sensors and Actuators A-Physical. ISSN 0924-4247. Vol. 115, N.º 2-3 (2004), pp. 191-195.

Research Projects

Organizational Units

Journal Issue

Publisher

Elsevier Science SA

CC License

Altmetrics