Silicon quantum dots: surface matters

K Dohnalová, T Gregorkiewicz… - Journal of Physics …, 2014 - iopscience.iop.org
Silicon quantum dots (SiQDs) hold great promise for many future technologies. Silicon is
already at the core of photovoltaics and microelectronics, and SiQDs are capable of efficient …

Silicon nanoparticles with surface nitrogen: 90% quantum yield with narrow luminescence bandwidth and the ligand structure based energy law

Q Li, TY Luo, M Zhou, H Abroshan, J Huang, HJ Kim… - ACS …, 2016 - ACS Publications
Silicon nanoparticles (NPs) have been widely accepted as an alternative material for typical
quantum dots and commercial organic dyes in light-emitting and bioimaging applications …

Multiple exciton generation in isolated and interacting silicon nanocrystals

I Marri, S Ossicini - Nanoscale, 2021 - pubs.rsc.org
An important challenge in the field of renewable energy is the development of novel
nanostructured solar cell devices which implement low-dimensional materials to overcome …

Size-Dependent Intrinsic Radiative Decay Rates of Silicon Nanocrystals<? format?> at Large Confinement Energies

M Sykora, L Mangolini, RD Schaller, U Kortshagen… - Physical review …, 2008 - APS
We study ultrafast photoluminescence (PL) dynamics of Si nanocrystals (NCs). The early-
time PL spectra (<? format?><<? format?> 1 ns), which show strong dependence on NC …

Revisiting an ongoing debate: What role do surface groups play in silicon nanocrystal photoluminescence?

R Sinelnikov, M Dasog, J Beamish, A Meldrum… - ACS …, 2017 - ACS Publications
The origin of photoluminescence (PL) in silicon nanocrystals (SiNCs) remains a subject of
considerable debate. Size-dependent PL that supports the quantum confinement model has …

Trap-Driven Exciton Recombination Processes within Femtosecond Laser-Synthesized Strongly Oxidized Silicon Nanoparticles

PA Piatkowski, NA Abbasi, WM Awad… - The Journal of …, 2024 - ACS Publications
Trap states are central to silicon nanoparticle (Si NP) photoluminescence and charge
transport properties, significantly influencing their potential for real-life applications. Laser …

Direct imaging of electron recombination and transport on a semiconductor surface by femtosecond time-resolved photoemission electron microscopy

K Fukumoto, Y Yamada, K Onda… - Applied Physics Letters, 2014 - pubs.aip.org
Much effort has been devoted to the development of techniques to probe carrier dynamics,
which govern many semiconductor device characteristics. We report direct imaging of …

Edge-emitting silicon nanocrystal distributed feedback laser with extremely low exciton threshold

P Zeng, F Wang, Y Zhang, W Zhou, Z Guo, X Wu… - Acs …, 2021 - ACS Publications
The successful integration of a laser into the silicon photonic chip has long been the holy
grail of silicon photonics. Among the various methods addressing this challenge, silicon …

White-emitting oxidized silicon nanocrystals: Discontinuity in spectral development with reducing size

K Dohnalová, L Ondič, K Kůsová, I Pelant… - Journal of Applied …, 2010 - pubs.aip.org
Small oxidized silicon nanocrystals of average sizes below 3.5 nm are prepared using
modified electrochemical etching of a silicon wafer. Modifications introduced in the etching …

Surface-engineered silicon nanocrystals

D Mariotti, S Mitra, V Švrček - Nanoscale, 2013 - pubs.rsc.org
Quantum confined silicon nanocrystals (Si-ncs) exhibit intriguing properties due to silicon's
indirect bandgap and their highly reactive surfaces. In particular the interplay of quantum …