photocurrent वाक्य
उदाहरण वाक्य
मोबाइल
- Two of the larger factors are : quantum efficiency, which indicates how well incident optical photons are absorbed and then used to generate primary charge carriers; and total leakage current, which is the sum of the dark current and photocurrent and noise.
- Avalanche photodiodes ( APD's ) are used in Optical receivers before the signal is given to the receiver circuitry the photon is multiplied with the photocurrent and this increases the sensitivity of the receiver since photocurrent is multiplied before encountering of the thermal noise associated with the receiver circuit.
- Avalanche photodiodes ( APD's ) are used in Optical receivers before the signal is given to the receiver circuitry the photon is multiplied with the photocurrent and this increases the sensitivity of the receiver since photocurrent is multiplied before encountering of the thermal noise associated with the receiver circuit.
- One of his other findings resulted from measurements of the dependence of the intensity of the electric photo current on the gas pressure, where he found the existence of an optimal gas pressure P m corresponding to a maximum photocurrent; this property was used for a creation of solar cells.
- But, it has been shown in most of the previous investigations that the control over a uniform blending of the electron donating conjugated polymer and the electron accepting CNT is one of the most difficult as well as crucial aspects in creating efficient photocurrent collection in CNT-based OPV devices.
- A standard tandem cell consists of one n-DSC and one p-DSC in a simple sandwich configuration with an intermediate electrolyte layer . n-DSC and p-DSC are connected in series, which implies that the resulting photocurrent will be controlled by the weakest photoelectrode, whereas photovoltages are additive.
- When the emitted power is detected with a wide-bandwidth square-law detector the intensity noise will be converted into current fluctuations and the measured photocurrent will include a constant term, I 0, proportional to the mean optical intensity and a time dependent term, I n, related to the intensity fluctuations.
- From this measurement a useful parameter that provides quantitative information on the noise of the optical source can be evaluated : it is the relative intensity noise ( RIN ), that is the ratio between the power spectral density of the noise current, I n, measured over a given bandwidth, and the square value of the average photocurrent, I 0
- This also explains why large open-circuit voltages tend to be seen only in crystals that ( in the dark ) have very low conductivity : Any electrons that can freely move through the crystal ( i . e ., not requiring photons to move ) will follow the drift-diffusion equation, which means that these electrons will " subtract " from the photocurrent and reduce the photovoltaic effect.
- Where e is the elementary charge, \ eta is the absorption efficiency and g _ { ph } is the photoconductive gain . \ eta and g _ { ph } are the probabilities for a photon to add an electron to the photocurrent, also called quantum efficiency . \ eta is the probability of a photon exciting an electron, and g _ { ph } depends on the electronic transport properties.
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