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micro-crystals Single Photon InfraREd detectors

Objective

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.

Field of science

  • /engineering and technology/materials engineering/crystals
  • /medical and health sciences/clinical medicine/oncology/cancer
  • /medical and health sciences/clinical medicine/oncology/cancer/breast cancer

Call for proposal

H2020-FETOPEN-1-2016-2017
See other projects for this call

Funding Scheme

RIA - Research and Innovation action

Coordinator

POLITECNICO DI MILANO
Address
Piazza Leonardo Da Vinci 32
20133 Milano
Italy
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 892 232,50

Participants (5)

UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCA
Italy
EU contribution
€ 729 752,50
Address
Piazza Dell'ateneo Nuovo 1
20126 Milano
Activity type
Higher or Secondary Education Establishments
UNIVERSITY OF GLASGOW
United Kingdom
EU contribution
€ 737 271
Address
University Avenue
G12 8QQ Glasgow
Activity type
Higher or Secondary Education Establishments
PHILIPPS UNIVERSITAET MARBURG
Germany
EU contribution
€ 316 500
Address
Biegenstrasse 10
35037 Marburg
Activity type
Higher or Secondary Education Establishments
TECHNISCHE UNIVERSITAET DRESDEN
Germany
EU contribution
€ 230 000
Address
Helmholtzstrasse 10
01069 Dresden
Activity type
Higher or Secondary Education Establishments
MICRO PHOTON DEVICES S.R.L.
Italy
EU contribution
€ 200 625
Address
Via Stradivari 4
39100 Bolzano
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)