PMID- 33803391
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210408
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 11
IP  - 3
DP  - 2021 Mar 9
TI  - Waveguiding of Photoluminescence in a Layer of Semiconductor Nanoparticles.
LID - 10.3390/nano11030683 [doi]
LID - 683
AB  - Semiconductor nanoparticles (SNPs), such as quantum dots (QDs) and core/shell 
      nanoparticles, have proven to be promising candidates for the development of 
      next-generation technologies, including light-emitting diodes (LEDs), liquid 
      crystal displays (LCDs) and solar concentrators. Typically, these applications 
      use a sub-micrometer-thick film of SNPs to realize photoluminescence. However, 
      our current knowledge on how this thin SNP layer affects the optical efficiency 
      remains incomplete. In this work, we demonstrate how the thickness of the 
      photoluminescent layer governs the direction of the emitted light. Our 
      theoretical and experimental results show that the emission is fully outcoupled 
      for sufficiently thin films (monolayer of SNPs), whereas for larger thicknesses 
      (larger than one tenth of the wavelength) an important contribution propagates 
      along the film that acts as a planar waveguide. These findings serve as a 
      guideline for the smart design of diverse QD-based systems, ranging from LEDs, 
      where thinner layers of SNPs maximize the light outcoupling, to luminescent solar 
      concentrators, where a thicker layer of SNPs will boost the efficiency of light 
      concentration.
FAU - Ussembayev, Yera Y
AU  - Ussembayev YY
AUID- ORCID: 0000-0002-4779-9046
AD  - LCP Research Group, Ghent University, Technologiepark 126, 9052 Gent, Belgium.
AD  - Center for Nano and Biophotonics, Ghent University, Technologiepark 126, 9052 
      Gent, Belgium.
FAU - Zawacka, Natalia K
AU  - Zawacka NK
AD  - LCP Research Group, Ghent University, Technologiepark 126, 9052 Gent, Belgium.
AD  - Center for Nano and Biophotonics, Ghent University, Technologiepark 126, 9052 
      Gent, Belgium.
AD  - PCN Research Group, Ghent University, Krijgslaan 281, 9000 Gent, Belgium.
FAU - Strubbe, Filip
AU  - Strubbe F
AUID- ORCID: 0000-0003-0078-3888
AD  - LCP Research Group, Ghent University, Technologiepark 126, 9052 Gent, Belgium.
AD  - Center for Nano and Biophotonics, Ghent University, Technologiepark 126, 9052 
      Gent, Belgium.
FAU - Hens, Zeger
AU  - Hens Z
AUID- ORCID: 0000-0002-7041-3375
AD  - Center for Nano and Biophotonics, Ghent University, Technologiepark 126, 9052 
      Gent, Belgium.
AD  - PCN Research Group, Ghent University, Krijgslaan 281, 9000 Gent, Belgium.
FAU - Neyts, Kristiaan
AU  - Neyts K
AUID- ORCID: 0000-0001-5551-9772
AD  - LCP Research Group, Ghent University, Technologiepark 126, 9052 Gent, Belgium.
AD  - Center for Nano and Biophotonics, Ghent University, Technologiepark 126, 9052 
      Gent, Belgium.
LA  - eng
PT  - Journal Article
DEP - 20210309
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC7999844
OTO - NOTNLM
OT  - LED
OT  - anisotropic emission
OT  - light waveguiding
OT  - nanooptics
OT  - quantum dots
OT  - solar concentrators
COIS- The authors declare no conflict of interest.
EDAT- 2021/04/04 06:00
MHDA- 2021/04/04 06:01
PMCR- 2021/03/09
CRDT- 2021/04/03 01:14
PHST- 2021/02/05 00:00 [received]
PHST- 2021/02/23 00:00 [revised]
PHST- 2021/03/05 00:00 [accepted]
PHST- 2021/04/03 01:14 [entrez]
PHST- 2021/04/04 06:00 [pubmed]
PHST- 2021/04/04 06:01 [medline]
PHST- 2021/03/09 00:00 [pmc-release]
AID - nano11030683 [pii]
AID - nanomaterials-11-00683 [pii]
AID - 10.3390/nano11030683 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2021 Mar 9;11(3):683. doi: 10.3390/nano11030683.