Output Stages and Power Amplifiers
... Each output device always either fully on or off – theoretically zero power dissipation. Example: The built-in speaker in a PC is driven by a Class D type “on/off’ circuit. ...
... Each output device always either fully on or off – theoretically zero power dissipation. Example: The built-in speaker in a PC is driven by a Class D type “on/off’ circuit. ...
Unusual Aspects of Dispersion Forces in Nanostructures
... functionals have been derived that produce both a reasonable short-ranged behavior and a reasonable asymptotic dispersion force, when applied to a wide variety of dimers where at least one component is a small molecule. They thus describe the whole van der Waals (vdW) interaction curve. This talk wi ...
... functionals have been derived that produce both a reasonable short-ranged behavior and a reasonable asymptotic dispersion force, when applied to a wide variety of dimers where at least one component is a small molecule. They thus describe the whole van der Waals (vdW) interaction curve. This talk wi ...
SIXTH FRAMEWORK PROGRAMME
... can be handled separately in order find the origin of efficiency limitations and then to find the device configurations that optimize these two aspects independently. This deliverable is mostly focussed on the optical part and it includes the explanation of the employed physical models, discussions ...
... can be handled separately in order find the origin of efficiency limitations and then to find the device configurations that optimize these two aspects independently. This deliverable is mostly focussed on the optical part and it includes the explanation of the employed physical models, discussions ...
Exercise 3.4.1
... Exercise 3.4.1 Lets consider a solar cell as an ideal pn-junction, for simplicities sake even without the current contributions from the space charge region, but with a built in series resistance Rser and a shunt resistance Rshunt We have the following equivalent circuit diagram (also defining what ...
... Exercise 3.4.1 Lets consider a solar cell as an ideal pn-junction, for simplicities sake even without the current contributions from the space charge region, but with a built in series resistance Rser and a shunt resistance Rshunt We have the following equivalent circuit diagram (also defining what ...
Lecture 19: Solar cells
... the depletion width. This is shown in figure 5. The carriers are extracted by metal electrodes on either side. A finger electrode is used on the top to make the electrical contact, so that there is sufficient surface for the light to penetrate. The arrangement of the top electrode is shown in figure ...
... the depletion width. This is shown in figure 5. The carriers are extracted by metal electrodes on either side. A finger electrode is used on the top to make the electrical contact, so that there is sufficient surface for the light to penetrate. The arrangement of the top electrode is shown in figure ...
Applied Physics letters 86, 164101 (2005)
... for low mixing percentage, but more blended devices show fairly low FF 共⬇23%兲 until large mobilities are reached. Voc shows clear dependence on blending. Largest Voc is gained for layers and drops to the value of the built-in potential for homogeneous blends. This effect is caused by a reduction in ...
... for low mixing percentage, but more blended devices show fairly low FF 共⬇23%兲 until large mobilities are reached. Voc shows clear dependence on blending. Largest Voc is gained for layers and drops to the value of the built-in potential for homogeneous blends. This effect is caused by a reduction in ...
L6699: Enhanced high-voltage resonant controller
... of the resonant tank so that soft-switching can be achieved with a lower level of reactive energy (i.e. magnetizing current), hence optimizing efficiency under a broader load range, from full to light load ...
... of the resonant tank so that soft-switching can be achieved with a lower level of reactive energy (i.e. magnetizing current), hence optimizing efficiency under a broader load range, from full to light load ...
Photovoltaic Cells (Solar Cells)
... band gap. Semi-conductors have an intermediate band gap. Meaning they require more energy to move electrons than a conductor, but less than an insulator. Once electrons are moved they create electron “holes” or unoccupied orbitals in the valance band and easily released electrons in the conduction b ...
... band gap. Semi-conductors have an intermediate band gap. Meaning they require more energy to move electrons than a conductor, but less than an insulator. Once electrons are moved they create electron “holes” or unoccupied orbitals in the valance band and easily released electrons in the conduction b ...
23.5. Semiconductor Devices - Chemistry at Winthrop University
... (a) There is an appreciable current through the diode when the diode is forward biased. (b) Under a reverse bias condition, there is almost no current through the diode. ...
... (a) There is an appreciable current through the diode when the diode is forward biased. (b) Under a reverse bias condition, there is almost no current through the diode. ...
Series and Parallel Circuits Project #12
... 1. Use one end of a jumper to clamp the red wires from two solar cells together, and clip the other end to a terminal on the motor. 2. Use a jumper to clamp the black wires from the two solar cells together, and clip the other end to the other terminal on the motor. NOTE: Parallel circuits are usefu ...
... 1. Use one end of a jumper to clamp the red wires from two solar cells together, and clip the other end to a terminal on the motor. 2. Use a jumper to clamp the black wires from the two solar cells together, and clip the other end to the other terminal on the motor. NOTE: Parallel circuits are usefu ...
Series and Parallel Circuits Project #12
... 1. Use one end of a jumper to clamp the red wires from two solar cells together, and clip the other end to a terminal on the motor. 2. Use a jumper to clamp the black wires from the two solar cells together, and clip the other end to the other terminal on the motor. NOTE: Parallel circuits are usefu ...
... 1. Use one end of a jumper to clamp the red wires from two solar cells together, and clip the other end to a terminal on the motor. 2. Use a jumper to clamp the black wires from the two solar cells together, and clip the other end to the other terminal on the motor. NOTE: Parallel circuits are usefu ...
ITO Etched by Photolithography Used in the Fabrication of Flexible
... device is PET/ITO/PEDOT: PSS/P3HT: PCBM/Al. P3HT (poly-3-hexylthiophene). It was used as an electron donor, PCBM ([6, 6]-phenyl C61-butyric acid methyl ester) as an electron acceptor and PEDOT: PSS used as a HIL (hole injection layer). These materials were deposited by spin coating method on the fle ...
... device is PET/ITO/PEDOT: PSS/P3HT: PCBM/Al. P3HT (poly-3-hexylthiophene). It was used as an electron donor, PCBM ([6, 6]-phenyl C61-butyric acid methyl ester) as an electron acceptor and PEDOT: PSS used as a HIL (hole injection layer). These materials were deposited by spin coating method on the fle ...
Light Emitting Diodes
... have also become commonly used in destination signs on public transport vehicles or even as part of transparent glass area. • LED panels are sometimes used as form of lighting, for the purpose of general illumination, task lighting, or even stage lighting rather than display. ...
... have also become commonly used in destination signs on public transport vehicles or even as part of transparent glass area. • LED panels are sometimes used as form of lighting, for the purpose of general illumination, task lighting, or even stage lighting rather than display. ...
Increase of internal quantum efficiency in small
... has to be expected. We estimate the device temperature to be around 45 ◦ C since the device could not be cooled directly. By this reason a higher ll factor and a lower open circuit ...
... has to be expected. We estimate the device temperature to be around 45 ◦ C since the device could not be cooled directly. By this reason a higher ll factor and a lower open circuit ...
Exercise 8.1-3 IV
... IV Characteristics of Real Solar Cells Lets consider a solar cell as described in the backbone, with a built in series resistance RSE and a shunt resistance RSH We have the equivalent circuit diagram as shown. The shunt resistance takes into account that the huge area of the pn-junction of a solar c ...
... IV Characteristics of Real Solar Cells Lets consider a solar cell as described in the backbone, with a built in series resistance RSE and a shunt resistance RSH We have the equivalent circuit diagram as shown. The shunt resistance takes into account that the huge area of the pn-junction of a solar c ...