PhD position - SOI vertical diodes for LWIR detection

DETALLES DE LA OPORTUNIDAD

Recompensa total

0 $

Universidad Estatal

CEA Tech

Área

Europa Oriental

País anfitrión

Francia

Fecha límite

31 oct. 2021

Nivel de estudio

Doctorado

Tipo de oportunidad

Doctor

Especialidades

Física

Oportunidad de financiación

No financiación

Países elegibles

Esta oportunidad está destinada a todos los países

Región elegible

Todas las regiones

SL-DRT-21-0313

RESEARCH FIELD

Photonics, Imaging and displays

ABSTRACT

Uncooled thermal detectors absorb the infrared flux in wavelength range from 7µm to 14µm. This corresponds to an atmospheric transmission window and to the maximum emission of a blackbody at 300K, which enables to measure temperature variations of less than 100mK. The operating principle of microbolometers is based on the temperature measurement of a suspended membrane absorbing the infrared flux. The thermal transducer is the sensitive element of the microbolomètre, which determines its signal-to-noise ratio and therefore the performance of the bolometric pixel. Most commercial microbolometers use a thermistor with amorphous silicon or vanadium oxide for its high temperature coefficient (TCR = 2-4% / K) and low flicker noise (1/f noise).The thesis proposal deals with a breakthrough technology for microbolometers. Unlike conventional thermistor detectors, the student will examine the use of SOI vertical diodes as transductor. The topic will focus on characterizing and modeling the performance of such a device.