When power supply conducts like Transistor, inductor, capacitor and other side diode like OLED, LED, LCD
here in resisitor purpose of resists the current and inductor , capacitor same as we know the purpose
In other side while LED omits the lights, so here the used Photovoltaic principle
In reisitance under the ohms law.
My doubts or questions if any other principle is there? and what is the basic think in material science?
Materials science deals with the basic principles of Physics and Chemistry. The only thing which we have to remember that properties of materials depend on bonding, structure whether they are crystalline, polycrystalline or amorphous. They also depend on particle size in nano range. New concepts are adding to physics and chemistry based on the properties of materials. Regarding devices made from materials, light can be used as controlling parameter in photovoltaic devices or we can get light from junction devices as in case of LEDs. In fact I could not understand from the languaguage of your question what is your confusion. Still I have tried to answer your question.
thank you for your answers... my confusion about the material properties are why different from different materials and the Electrons play in the materials?
Example 1.copper-very good conducting material
2. Silicon and Cadmium Telluride (CdTe)- Photovoltaic materials (solar cells)
here the both are electrons ground.
Dr A. Kumar thank you. from your answers i got some studies topic which i don't have subject knowledge, so that is the problem this question comes.
It is band theory that tells whether the material is conductor, insulator or semiconductor
If band gap very high such material behave as insulator. If band gap (energy difference between lower edge of conduction band and upper edge of valance band) is small ( may be 0.5 eV to several eV need to confirm from book) then it behave as semiconductor. If band is half filled such material behave as metallic behavior. You can find detail information in general Solid State Physics book
If the band gap of material in the range of energy of visible light, such material show photovoltaic effect and can be used to fabricate solar cell.
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