Targeted positioning of quantum dots inside 3D silicon photonic crystals observed by synchrotron X-ray fluorescence tomography

A.S. Schulz, D.A. Grishina, C.A.M. Harteveld, A. Pacureanu, J. Huskens, G.J. Vancso, P. Cloetens, W.L. Vos

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

It is a major challenge in nanotechnology to precisely position active nanoparticles, like quantum dots, inside a three-dimensional (3D) nanostructure in order to realize novel functions. This is notably relevant to tune and control spontaneous emission and lasing of embedded quantum emitters [1] , [2]. Here, we study 3D photonic band gap crystals made from silicon that are infiltrated with PbS nanocrystal quantum dots that emit in the near infrared including telecom. Our crystals have the inverse woodpile structure and exhibit a broad full 3D band gap. Such crystals strongly inhibit emission of semiconductor quantum dots [3]. The material distribution in the crystals is defined by two perpendicular arrays of pores ( Fig. 1(A) ), running in the Z and X-directions. The crystal are made by CMOS-compatible means by deep reactive ion-etching through tailored masks. The PbS nanocrystals are covalently bonded to polymer brush layers that are grafted to the Si-air interfaces inside the 3D nanostructure using surface-initiated atom transfer radical polymerization (SI-ATRP) [4].

Original languageEnglish
Title of host publication2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages1
ISBN (Electronic)978-1-6654-1876-8
ISBN (Print)978-1-6654-4804-8
DOIs
Publication statusPublished - Jun 2021
EventConference on Lasers and Electro-Optics, CLEO 2021 - Virtual, Online, United States
Duration: 9 May 202114 May 2021
https://www.cleoeurope.org/foreword/

Publication series

NameOptics InfoBase Conference Papers
PublisherOptical Society of America

Conference

ConferenceConference on Lasers and Electro-Optics, CLEO 2021
Abbreviated titleCLEO EUROPE- EQEC 2021
Country/TerritoryUnited States
CityVirtual, Online
Period9/05/2114/05/21
Internet address

Keywords

  • 2023 OA procedure

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