Why in photovoltaic materials, photoluminescence somehow disappeared (also called PL quenching), and this is also desired...
Why in photovoltaic materials, photoluminescence somehow disappeared (also called PL quenching), and this is also desired in photovoltaic materials?
Homework Answers
Photovaltaic devices are used as the energy conveters.They use organic matter to absorb electrons and cinvert them into energy like solar plates. And there will be no electron exchange as they do not have any intermolecules. Thereafter asemiconducter oxides like TiO2,ZnO be used. The electrons in the materials moves to and fro and then the formed energy saved at desired position.
Quenching refers to decrese in the intensity of rays. Energy transfer, complex formation are examples to cause quenching. The quenching often heavily dependent on pressure and temperature. Quenching posses a problem in non-instant spectroscopic methods like laser induced flourosence.
Molecular oxygen and iodides are major quenchers in a compound or substance.
From the above data we can observe that in photovoltaic materials they used oxide containing semiconductors, some how that causes the photoluminiscense quenching.
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Why in photovoltaic materials, photoluminescence somehow
disappeared (also called PL quenching), and this is also desired...
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QUESTION 12 Why is the F statistic also called an F ratio? a. It is the...
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i got 1.4 but it was incorrect and i am not sure why. Please help! READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress...
i got 1.4 but it was incorrect
and i am not sure why. Please help!
READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example,...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has an ultimate compressive strength of 1.6x104N/cm2 [8]. Consider a person who falls from a height to the...
QUESTION 12 Why is the F statistic also called an F ratio? a. It is the ratio of one group mean to another. b. It is the ratio of the mean square between to the mean square wibitin. c. It is the ratio of the within-group sum of squares to the between-group sum of squares d. It is the ratio of degrees of freedom for the within group sum of squares to the degrees of freedom for the between-group sum...
Explain why the income statement can also be called a "profit-and-loss statement." What exactly does the word balance mean in the title of the balance sheet? Why do we balance the two halves? Explain why the income statement can also be called a "profit-and-loss statement." (Select from the drop-down menus.) t h at the top and ends with In reviewing the income statement of a profitable company, one can see that it begins with at the bottom. Had there been...
i got 1.4 but it was incorrect
and i am not sure why. Please help!
READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has an ultimate compressive strength of 1.6x104N/cm2 [8]. Consider a person who falls from a height to the...
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