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micro-crystals Single Photon InfraREd detectors

Obiettivo

µSPIRE aims at establishing a technological platform for homo- and hetero- structure based photonic and electronic devices using the self-assembling of epitaxial crystals on patterned Si substrates.
Emerging micro-electronic and photonic devices strongly require the integration on Si of a variety of semiconducting materials such as Ge, GaAs, GaN and SiC, in order to add novel functionalities to the Si platform. µSPIRE pursues this goal employing a novel deposition approach, which we termed vertical hetero-epitaxy (VHE). VHE exploits the patterning of conventional Si substrates, in combination with epitaxial deposition, to attain the self-assembly of arrays of Ge and GaAs epitaxial micro-crystals elongated in the vertical direction, featuring structural and electronic properties unparalleled by “conventional” epitaxial growth.
As a concrete demonstration of VHE potentialities, we will deliver a complete set of novel photon counting detectors: VHE micro-crystals will be used as the elementary microcells for single-photon detectors with performances far beyond those of current state-of-the-art devices, namely:
- High photon detection efficiency (> 80%), thanks to the use of several µm thick micro-crystals;
- High photon-number-resolving capability, thanks to the high density of micro-crystals;
- High fill-factor (> 90%), thanks to the almost complete surface coverage attained by VHE;
- Extended sensitivity from visible (350 – 900 nm) to NIR (800 – 1800 nm) and MIR (up to 10µm), thanks to the integration on Si of Ge and GaAs quantum wells.
As a first action towards real applications, the Si and Ge devices will be tested on phantoms closely mimicking breast tissue in order to assess the improvement in signal level with respect to state of the art detectors, and investigate the potential extension to a presently unexplored, but appealing, long-wavelength spectral range (1500nm+) of breast imaging and optical assessment of breast cancer risk.

Invito a presentare proposte

H2020-FETOPEN-1-2016-2017
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Meccanismo di finanziamento

RIA - Research and Innovation action

Coordinatore

POLITECNICO DI MILANO
Indirizzo
Piazza Leonardo Da Vinci 32
20133 Milano
Italia
Tipo di attività
Higher or Secondary Education Establishments
Contributo UE
€ 982 232,50

Partecipanti (5)

UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCA
Italia
Contributo UE
€ 639 752,50
Indirizzo
Piazza Dell'ateneo Nuovo 1
20126 Milano
Tipo di attività
Higher or Secondary Education Establishments
UNIVERSITY OF GLASGOW
United Kingdom
Contributo UE
€ 737 271
Indirizzo
University Avenue
G12 8QQ Glasgow
Tipo di attività
Higher or Secondary Education Establishments
PHILIPPS UNIVERSITAET MARBURG
Germania
Contributo UE
€ 316 500
Indirizzo
Biegenstrasse 10
35037 Marburg
Tipo di attività
Higher or Secondary Education Establishments
TECHNISCHE UNIVERSITAET DRESDEN
Germania
Contributo UE
€ 230 000
Indirizzo
Helmholtzstrasse 10
01069 Dresden
Tipo di attività
Higher or Secondary Education Establishments
MICRO PHOTON DEVICES SRL
Italia
Contributo UE
€ 200 625
Indirizzo
Via Waltraud Gebert Deeg 3/F
39100 Bolzano
Tipo di attività
Private for-profit entities (excluding Higher or Secondary Education Establishments)