Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Vlad Sukhovatkin"'
Autor:
David J. Hagan, Peter D. Olszak, Scott Webster, Larissa Levina, Vlad Sukhovatkin, Lazaro A. Padilha, Gero Nootz, Edward H. Sargent, Lukasz Brzozowski, Eric W. Van Stryland
Publikováno v:
Nano Letters. 10:3577-3582
The influence of quantum confinement on the one- and two-photon absorption spectra (1PA and 2PA) of PbS and PbSe semiconductor quantum dots (QDs) is investigated. The results show 2PA peaks at energies where only 1PA transitions are predicted and 1PA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04bfb72835fefa27a18c17acd545071e
https://doi.org/10.1021/nl1018673
https://doi.org/10.1021/nl1018673
Autor:
Vlad Sukhovatkin, Sean Hinds, Gerasimos Konstantatos, Larissa Levina, Edward H. Sargent, Ethan J. D. Klem
Publikováno v:
Advanced Materials. 20:4398-4402
Solution-processed optoelectronic materials offer a route to low-cost photodetectors, large-area solar cells, and integrated optical sources. While significant progress has been reported in organic and polymer spin-cast optoelectronics, colloidal qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4cecb72afae3aa9cda2cb88dbd714c7
https://doi.org/10.1002/adma.200800452
https://doi.org/10.1002/adma.200800452
Autor:
Edward H. Sargent, Larissa Levina, Peter W. E. Smith, S. Myrskog, Vlad Sukhovatkin, Sjoerd Hoogland, Emanuel Istrate
Publikováno v:
The Journal of Physical Chemistry B. 112:2757-2760
We report transient absorption saturation measurements on lead sulfide colloidal nanocrystals at the first and second exciton energies and fit the results to a model incorporating intraband and interband relaxation processes. We study in detail the A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5322144494b91d040024269a275bac56
https://doi.org/10.1021/jp076809g
https://doi.org/10.1021/jp076809g
Autor:
David P. Bazett-Jones, Larissa Levina, Rozalia Nisman, Edward H. Sargent, Vlad Sukhovatkin, S. Cauchi, Sergei Musikhin
Publikováno v:
Advanced Materials. 17:1854-1857
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed1ef8f8285d38a22b1b26882b3b9e24
https://doi.org/10.1002/adma.200401197
https://doi.org/10.1002/adma.200401197
Autor:
Ahmed Maria, Larissa Levina, Vlad Sukhovatkin, T.-W. F. Chang, Paul W. Cyr, Edward H. Sargent
Publikováno v:
Synthetic Metals. 148:257-261
We investigate the effect of film morphology and phase segregation in polymer/colloidal PbS nanocrystal films on the near-infrared photoluminescence quantum efficiency (PLQE) of the nanocrystals. A direct correlation between the size of closed packed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53557e296de6aa6710e21075c9c256a3
https://doi.org/10.1016/j.synthmet.2004.10.003
https://doi.org/10.1016/j.synthmet.2004.10.003
Publikováno v:
SPIE Proceedings.
A novel method, based on X-ray Light Valve (XLV) technology, is proposed for making good image quality yet inexpensive flat panel detectors for digital mammography. The digital mammography markets, particularly in the developing countries, demand qua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84f77b4dc5bfd62b26a7281f3872b136
https://doi.org/10.1117/12.2041620
https://doi.org/10.1117/12.2041620
Publikováno v:
Science. 324:1542-1544
Reaping Gain from Decay In photovoltaic devices, absorbed light excites electrons into a conduction band and thereby initiates electric current flow. Unfortunately, if the energy of the incident photons exceeds the threshold for this excitation (the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b3e740b02910c5ba1037eb500b8286
https://doi.org/10.1126/science.1173812
https://doi.org/10.1126/science.1173812
Autor:
Vlad Sukhovatkin, Lazaro A. Padilha, Gero Nootz, Lukasz Brzozowski, David J. Hagan, Larissa Levina, Scott Webster, Edward H. Sargent, Eric W. Van Stryland
Publikováno v:
Physical Review B. 83
The time dynamics of the photoexcited carriers and carrier-multiplication efficiencies in PbS quantum dots (QDs) are investigated. In particular, we report on the carrier dynamics, including carrier multiplication, as a function of QD size and compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52dadfcb4672f18c015081a4c41c7ad1
https://doi.org/10.1103/physrevb.83.155302
https://doi.org/10.1103/physrevb.83.155302
Autor:
David J. Hagan, Vlad Sukhovatkin, Eric W. Van Stryland, Lazaro A. Padilha, Lukasz Brzozowski, Peter D. Olszak, Scott Webster, Larissa Levina, Gero Nootz, Edward H. Sargent
Publikováno v:
Nano letters. 11(3)
The two-photon absorption, 2PA, cross sections of PbS quantum dots, QDs, are theoretically and experimentally investigated and are shown to be enhanced with increasing quantum confinement. This is in contrast to our previous results for CdSe and CdTe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d044fb88f863fbfb98fccb70740365a
https://pubmed.ncbi.nlm.nih.gov/21314162
https://pubmed.ncbi.nlm.nih.gov/21314162
Autor:
Gero Nootz, David J. Hagan, Scott Webster, Eric W. Van Stryland, Larissa Levina, Vlad Sukhovatkin, Edward H. Sargent, Lazaro A. Padilha
Publikováno v:
SPIE Proceedings.
Understanding the nonlinear optical processes in semiconductor nanostructures leads to possible applications in areas including laser amplifiers, optical switches, and solar cells. Here we present a study of the frequency degenerate twophoton absorpt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f71ac648ce4c3c4c0a7aed72021a5968
https://doi.org/10.1117/12.842287
https://doi.org/10.1117/12.842287