@misc{10481/59589,
year = {2019},
month = {11},
url = {http://hdl.handle.net/10481/59589},
abstract = {We present a theoretical study at the atomistic level of the optical properties of semiconductor nanocrystal
films. We investigate the dependence of the absorption coefficient on size, inter-dot separation, surface
stoichiometry and morphology, temperature, position of the Fermi level and light polarization. Our
results show that, counter-intuitively, huge blue shifts are expected in some intra-band transitions for
strongly coupled arrays, in contrast with the predicted and observed red shift of the band gap absorption
in such systems. Furthermore, we find that the energies of such transitions can be tuned within a range
of several hundreds of meV, just by engineering the inter-dot separation in the film through the choice
of appropriately sized capping ligands. Finally we discuss the application of this effect to nanocrystalbased
intermediate-band solar cells.},
organization = {M. C. gratefully acknowledges financial support from the School
of Electronic & Electrical Engineering, University of Leeds. F. M.
G. C. and S. R. B. were supported by Project ENE2016_80944_R,
funded by the Spanish Ministerio de Econom´ıa, Industria y
Competitividad.},
publisher = {Royal Society of Chemistry},
title = {Optical properties of nanocrystal films: blue shifted transitions as signature of strong coupling},
doi = {10.1039/c9na00647h},
author = {Skibinsky Gitlin, Erik Sebastian and Rodríguez Bolívar, Salvador and Califano, Marco and Gómez Campos, Francisco Manuel},
}