H2020Индивидуална стипендия2020–2021

NP-SPAD · Uncooled Nanopillar Single-Photon Avalanche Diodes (NP-SPADs) at Telecommunication Wavelengths

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2020-01-01 → 2021-12-31
Финансиране от ЕС: 224 934 €
Участници: 1
Схема: MSCA-IF-EF-ST

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Накратко на български

Нанопилари от полупроводникови материали се използват за създаване на детектори, които улавят единични фотони при телекомуникационни дължини на вълната. Те помагат за подобряване на квантовия обмен на информация, дистанционното сензорно засичане и системите за лазерно сканиране (LiDAR).

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Uncooled Nanopillar Single-Photon Avalanche Diodes (NP-SPADs) at Telecommunication Wavelengths

High efficiency detection of single photons at telecommunication wavelengths (notably at 1.55 µm) is critical for emerging technologies, such as free-space and on-fiber quantum information processing, eye-safe and long-distance light detection and ranging (LiDAR), and highly sensitive remote sensing. This research project aimed to meet this critical need by developing III-V nanopillar-based uncooled single-photon avalanche diodes (NP-SPADs). The overall objectives of the project were: (i) develop heteroepitaxy of III-V nanopillars (work package, WP1), (ii) optimize device fabrication process (WP2), (iii) demonstrate single photon detection (WP3), (iv) develop 3-D nanopillar GmAPD model (WP4), and (v) collaborate with European industrial partners (WP5). WP5 was contingent on the complete demonstration of single photon detection in WP3. Although the research for WP3 was completed, the outcome was not as expected and as such, WP5 was augmented to further the development of nanopillar SPADs using top-down etch method, alongside liaising with the industrial partners. Despite the unforeseen difficulties resulting from the COVID-19 lockdown and subsequent restrictions, the project provided many important findings and avenues for developing nanopillar-based devices. The results will be published in scientific journals and presented in future conference. The NP-SPAD project further helped the fellow achieve valuable experience through exposure to high-risk high-gain research, working in an internationally renowned multidisciplinary group, acquisition of new experimental expertise, and development of transferable skills. He also gained research experience in nanopillar surface chemistry, materials study, device physics, and plasmonics. This also includes mastering a range of novel nanomaterial, device, and optoelectronic characterization techniques.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

High efficiency detection of single photons at telecommunication wavelengths (notably at 1.55 µm) is critical for emerging technologies, such as free-space and on-fiber quantum information processing, eye-safe and long-distance light detection and ranging (LiDAR), and highly sensitive remote sensing. This research project aims to meet this critical need by developing III-V nanopillar-based uncooled single-photon avalanche diodes (NP-SPADs), which are composed of nanostructured InAsP-InP Geiger-mode avalanche photodiodes (GmAPDs) with self-assembled plasmonic gratings, operating at 1.55 µm. Compared with commercially available InGaAs(P)-InP GmAPDs, the proposed device scheme significantly suppresses thermally generated carriers and trap state population by a factor of 20 to 100 due to the extremely small fill factor of nanopillar arrays (less than 5%). All the while, sufficient optical absorption is maintained via surface plasmon resonance by the plasmonic gratings. The sum combination of these unique capabilities offers the promise of achieving NP-SPADs with free-running mode operation, high photon detection efficiency (PDE; probability of detecting a single photon) of 10 – 20%, low dark count rate (DCR; rate of false detection) of ~50 Hz, and high photon count rate ≥5 MHz. If successful, this approach can drastically stimulate the development and commercialization of high performance semiconductor-based NP-SPADs, putting European Union (EU) at the forefront of cutting-edge technology in single photon detection.

Оригинален текст от CORDIS (на английски).

Участници

CARDIFF UNIVERSITY · CARDIFFКоординаторОбединеното кралство