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6 mar 2024 · The P in POLED refers to the use of a plastic substrate, while the AM in AMOLED stands for Active Matrix.
A phase change diagram shows the relationship between temperature and heat in a substance. The x-axis of the graph shows how much heat is added to a substance. In this textbook, that heat will be measured in calories. Along the y-axis is the temperature of the substance measured in degrees Celsius.
In contrast to chemical physics, physical chemistry is predominantly (but not always) a macroscopic or supra-molecular science, as the majority of the principles on which it was founded relate to the bulk rather than the molecular/atomic structure alone.
The induced dielectric polarization (P) describes the overall response behavior of a dielectric medium to the electric field (E). In a linear dielectric medium, the response is linear (as shown in figure 1-a) and the frequency of light will not be altered.
Periodic poling allows for quasi phase matching, which maintains phase relation of the photons throughout the crystal where they would otherwise fall out of phase. This engineered effect leads to a much higher conversion efficiency than would be found in the regular crystal.
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30 sty 2023 · At any one energy level it is possible to have three absolutely equivalent p orbitals pointing mutually at right angles to each other. These are arbitrarily given the symbols p x, p y and p z. This is simply for convenience; the x, y, and z directions change constantly as the atom tumbles in space. Figure 3: Hydrogen's electron - the 2p orbitals
