Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Marek Maciaszek"'
Publikováno v:
Physical Review Materials. 6
We present a first-principles computational study of the thermodynamics of carbon defects in hexagonal boron nitride (hBN). The defects considered are carbon monomers, dimers, trimers, and larger carbon clusters, as well as complexes of carbon with v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3234b62267259a8dfa9f243f13977ed3
https://doi.org/10.1103/physrevmaterials.6.014005
https://doi.org/10.1103/physrevmaterials.6.014005
We present ab-initio calculations of photoionization thresholds and cross sections of the negatively charged nitrogen-vacancy (NV) center in diamond from the ground $^{3}\!A_2$ and the excited $^{3}\!E$ states. We show that after the ionization from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcfaa1a410e7b13bd506f20ee87594e2
Publikováno v:
IEEE Journal of Photovoltaics. 8:1868-1874
We measured the temperature-dependent internal quantum efficiency (IQE) of Cu(In,Ga)Se2-based (CIGS) solar cells. The largest differences in IQE spectra measured between 100 and 300 K were observed in the wavelength range, corresponding to the light
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ee9c2af9df752fad97b70a24b36744
https://doi.org/10.1109/jphotov.2018.2870527
https://doi.org/10.1109/jphotov.2018.2870527
Autor:
Marek Maciaszek, Pawel Zabierowski
Publikováno v:
Thin Solid Films. 633:45-48
In this contribution, we analyze factors determining the magnitude of the persistent photoconductivity (PPC) effect, defined as a difference in the hole concentration after and before illumination. Based on the Lany-Zunger model, we derive the equati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36bce4483a7b8de83136f674b01c8b31
https://doi.org/10.1016/j.tsf.2016.11.004
https://doi.org/10.1016/j.tsf.2016.11.004
Publikováno v:
Thin Solid Films
Thin Solid Films, Elsevier, 2019, 669, pp.600-604
Thin Solid Films, Elsevier, 2019, 669, pp.600-604
Persistent photoconductivity (PPC) in thin Cu(In,Ga)Se2 films is discussed within a model of relaxing defects acting as donors or acceptors depending on their configurational and charge state. The aim of this work is to identify the factors related t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e656fdafd40b1d4c27c6e8be252ce044
https://hal.archives-ouvertes.fr/hal-01972338
https://hal.archives-ouvertes.fr/hal-01972338
Autor:
Pawel Zabierowski, Marek Maciaszek
Publikováno v:
IEEE Journal of Photovoltaics. 5:1454-1461
In this study, we investigate, through numerical simulations, the influence of the n-side of the Cu(In,Ga)Se2 (CIGS)-based photovoltaic devices on capacitance space charge profiles, with a special emphasis on evaluating metastable defect concentratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1931feb53f2857393a813775285eac3
https://doi.org/10.1109/jphotov.2015.2444097
https://doi.org/10.1109/jphotov.2015.2444097
Publikováno v:
IEEE Journal of Photovoltaics. 5:1206-1211
The persistent increase of conductivity after illumination in CuInGaSe2 thin films was investigated as a function of the temperature and light intensity at its creation. Experimentally observed dependences were compared with the results of calculatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7818e8d9afb2e112c8845d6bf5c954b1
https://doi.org/10.1109/jphotov.2015.2423491
https://doi.org/10.1109/jphotov.2015.2423491
Autor:
Marek Maciaszek
Publikováno v:
Journal of Applied Physics. 125:043102
Cu(In,Ga)Se2-based solar cells often exhibit fill factor losses at low temperature, in particular after red illumination or reverse biasing. A narrow p+ layer between the absorber and buffer layers is commonly assumed to explain these effects. In thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb8d8689910a97581fabe6b1a5bdefa8
https://doi.org/10.1063/1.5049388
https://doi.org/10.1063/1.5049388
Publikováno v:
Thin Solid Films
In this contribution we aim at a better understanding the influence of metastable VSe defects on electrical characteristics of Cu(In,Ga)Se2-based solar cells. In order to achieve this goal we calculate the distribution of VSe charge states by solving
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00d6ee2bc12b2bdc75e4728d818aab18
Autor:
Marek Maciaszek, Pawel Zabierowski
Publikováno v:
Journal of Applied Physics. 123:161404
The magnitude of the persistent photoconductivity effect (PPC) in two sets of Cu(In,Ga)Se2 samples, differing in the amount of cadmium and sodium, was measured. Using equations describing the magnitude of PPC, metastable defect and shallow acceptor d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c8cd22bc7ecca47a4b522d4a0565590
https://doi.org/10.1063/1.5011430
https://doi.org/10.1063/1.5011430