Plots Traduzione
Plot definition: 1. The story of a book, film, play, etc.: 2. A secret plan made by several people to do something. Plot - Traduzione del vocabolo e dei suoi composti, e discussioni del forum. 1, della sesta direttiva del Consiglio 17 maggio 1977, 77/388/CEE, in materia di armonizzazione delle legislazioni degli Stati membri relative alle imposte sulla cifra di affari — Sistema comune di imposta sul valore aggiunto: base imponibile uniforme, come modificata dalla direttiva del Consiglio 16 dicembre 1991, 91/680/CEE, deve essere interpretata nel senso che non osta a.
An area chart is really similar to a line chart, except that the area between the x axis and the line is filled in with color or shading. It represents the evolution of a numerical variable following another numerical variable. If you
- Traduzioni in contesto per 'the plot of' in inglese-italiano da Reverso Context: of the plot, the plot of land.
- SYNONYMY NOTE: plot is used of a secret, usually evil, project or scheme, the details of which have been carefully worked out the plot to deprive him of his inheritance failed; intrigue, implying more intricate scheming, suggests furtive, underhanded maneuvering, often of an illicit nature the intrigues at the royal court; machination stresses deceit and cunning in devising plots.
want to represent this evolution for several groups in the same time, you are probably interested by stacked area chart, where every groups are displayed one of top of each other. Note that an interesting alternative is probably
to use faceting. In python, area chart can be done using the fillbetween function of matplotlib. The stackplot function could work as well, but it is more adapted for stacked area charts.
Sponsors
Matplotlib
- #240 Basic area chart
- #241 Control color of area chart
- #241 Add line to area chart
- #241 Area chart with seaborn style
- #243 Area chart with white grid
related
- Scatterplot
- Connected Scatter plot
- Line plot
- Stacked area plot
- Streamchart
Plot Traduzione
A Tauc plot[1] is used to determine the optical bandgap, or Tauc bandgap, of either disordered[2] or amorphous[3] semiconductors.
In his original work Jan Tauc (/taʊts/) showed that the optical absorption spectrum of amorphous germanium resembles the spectrum of the indirect transitions in crystalline germanium (plus a tail due to localized states at lower energies), and proposed an extrapolation to find the optical bandgap of these crystalline-like states.[4] Typically, a Tauc plot shows the quantity hν (the photon energy) on the abscissa and the quantity (αhν)1/2 on the ordinate, where α is the absorption coefficient of the material. Thus, extrapolating this linear region to the abscissa yields the energy of the optical bandgap of the amorphous material.
A similar procedure is adopted to determine the optical bandgap of crystalline semiconductors.[5] In this case, however, the ordinate is given by (α)1/r, in which the exponent 1/r denotes the nature of the transition:[6],[7],[8]
- r = 1/2 for direct allowed transitions
- r = 3/2 for direct forbidden transitions.
- r = 2 for indirect allowed transitions
- r = 3 for indirect forbidden transitions
Again, the resulting plot (quite often, incorrectly identified as a Tauc plot) has a distinct linear region that, extrapolated to the abscissa, yields the energy of the optical bandgap of the material.[9]
References[edit]
- ^Tauc, J. (1968). 'Optical properties and electronic structure of amorphous Ge and Si'. Materials Research Bulletin. 3: 37–46. doi:10.1016/0025-5408(68)90023-8.
- ^Mott, N. F. & Davis, E. A. (1979). Electronic processes in non-crystalline materials. Clarendon Press, Oxford. ISBN0-19-851288-0.CS1 maint: multiple names: authors list (link)
- ^Street, R. A. (1991). Hydrogenated amorphous silicon. Cambridge Univ. Press, Cambridge. ISBN0-521-37156-2.
- ^Tauc, J.; Grigorovici, R.; Vancu, A. (1966). 'Optical Properties and Electronic Structure of Amorphous Germanium'. Physica Status Solidi B. 15 (2): 627. Bibcode:1966PSSBR..15..627T. doi:10.1002/pssb.19660150224.
- ^Yu, P. Y. & Cardona, M. (1996). Fundamentals of semiconductors. Springer, Berlin. ISBN3-540-61461-3.CS1 maint: multiple names: authors list (link)
- ^MacFarlane, G. G. & Roberts, V. (1955). 'Infrared absorption of germanium near the lattice edge'. Physical Review. 97 (6): 1714–1716. doi:10.1103/PhysRev.97.1714.2.CS1 maint: multiple names: authors list (link)
- ^MacFarlane, G. G., McLean, T. P., Quarrington, J. E. & Roberts, V. (1958). 'Fine structure in the absorption-edge spectrum of Si'. Physical Review. 111 (5): 1245–1254. doi:10.1103/PhysRev.111.1245.CS1 maint: multiple names: authors list (link)
- ^Davis, E. A.; Mott, N. F. (1970). 'Conduction in non-crystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors'. Philosophical Magazine A. 22 (179): 903–922. doi:10.1080/14786437008221061.
- ^Zanatta, A. R. (2019). 'Revisiting the optical bandgap of semiconductors and the proposal of a unified methodology to its determination'. Scientific Reports. 9: 11225–12pp. doi:10.1038/s41598-019-47670-y.