Doped and codoped silicon nanocrystals: The role of surfaces and interfaces

I Marri, E Degoli, S Ossicini - Progress in Surface Science, 2017 - Elsevier
Si nanocrystals have been extensively studied because of their novel properties and their
potential applications in electronic, optoelectronic, photovoltaic, thermoelectric and …

[HTML][HTML] Simulations of nonradiative processes in semiconductor nanocrystals

D Jasrasaria, D Weinberg, JP Philbin… - The Journal of chemical …, 2022 - pubs.aip.org
The description of carrier dynamics in spatially confined semiconductor nanocrystals (NCs),
which have enhanced electron–hole and exciton–phonon interactions, is a great challenge …

Silicon nanoscale materials: From theoretical simulations to photonic applications

L Khriachtchev, S Ossicini, F Iacona… - International Journal …, 2012 - Wiley Online Library
The combination of photonics and silicon technology is a great challenge because of the
potentiality of coupling electronics and optical functions on a single chip. Silicon …

Defect-induced conical intersections promote nonradiative recombination

Y Shu, BS Fales, BG Levine - Nano letters, 2015 - ACS Publications
We apply multireference electronic structure calculations to demonstrate the presence of
conical intersections between the ground and the first excited electronic states of three …

Understanding nonradiative recombination through defect-induced conical intersections

Y Shu, BS Fales, WT Peng… - The Journal of Physical …, 2017 - ACS Publications
Defects are known to introduce pathways for the nonradiative recombination of electronic
excitations in semiconductors, but implicating a specific defect as a nonradiative center …

Tuning the work function of Si (100) surface by halogen absorption: A DFT study

M Bertocchi, M Amato, I Marri… - physica status solidi c, 2017 - Wiley Online Library
First‐principles calculations of work function tuning induced by different chemical
terminations on Si (100) surface are presented and discussed. We find that the presence of …

Silicon and germanium nanostructures for photovoltaic applications: ab-initio results

S Ossicini, M Amato, R Guerra, M Palummo… - Nanoscale research …, 2010 - Springer
Actually, most of the electric energy is being produced by fossil fuels and great is the search
for viable alternatives. The most appealing and promising technology is photovoltaics. It will …

Synthesis and Photoluminescence Properties of Rare-Earth-Activated Sr3–xAxAlO4H (A = Ca, Ba; x = 0, 1): New Members of Aluminate Oxyhydrides

T Wu, K Fujii, T Murakami, M Yashima… - Inorganic …, 2020 - ACS Publications
A series of aluminate-based oxyhydrides, Sr3–x A x AlO4H (A= Ca, Ba; x= 0, 1), has been
synthesized by high-temperature reaction of oxide and hydride precursors under a H2 …

Red-shifted carrier multiplication energy threshold and exciton recycling mechanisms in strongly interacting silicon nanocrystals

I Marri, M Govoni, S Ossicini - Journal of the American Chemical …, 2014 - ACS Publications
We present density functional theory calculations of carrier multiplication properties in a
system of strongly coupled silicon nanocrystals. Our results suggest that nanocrystal …

Do excited silicon–oxygen double bonds emit light?

Y Shu, BG Levine - The Journal of Physical Chemistry C, 2014 - ACS Publications
Oxidation of the surface of well-passivated silicon nanocrystals introduces defects which
dramatically affect the optical properties of the material. One such defect is the silicon …