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micro-crystals Single Photon InfraREd detectors

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.
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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)

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UNIVERSITA' DEGLI STUDI DI MILANO-BICOCCA

Italy

EU Contribution

€ 729 752,50

UNIVERSITY OF GLASGOW

United Kingdom

EU Contribution

€ 737 271

PHILIPPS UNIVERSITAET MARBURG

Germany

EU Contribution

€ 316 500

TECHNISCHE UNIVERSITAET DRESDEN

Germany

EU Contribution

€ 230 000

MICRO PHOTON DEVICES S.R.L.

Italy

EU Contribution

€ 200 625

Project information

Grant agreement ID: 766955

Status

Ongoing project

  • Start date

    1 November 2017

  • End date

    31 October 2020

Funded under:

H2020-EU.1.2.1.

  • Overall budget:

    € 3 106 381,25

  • EU contribution

    € 3 106 381

Coordinated by:

POLITECNICO DI MILANO

Italy