quantum efficiency

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quantum efficiency

A measure of the efficiency of conversion or utilization of light or other radiation. It is given by the proportion of incident photons, of a particular frequency, that are converted by a device into a useful form, such as a permanent record. Photographic emulsions, at best, record only a few photons out of every thousand falling on them. Electronic detectors have a much higher efficiency.

quantum efficiency

[′kwän·təm i‚fish·ən·sē]
(electronics)
The average number of electrons photoelectrically emitted from a photocathode per incident photon of a given wavelength in a phototube.
References in periodicals archive ?
By integrating these nanostructures into white OLEDs, an external quantum efficiency of up to 76.3% can be achieved.
measured an external quantum efficiency exceeding unity for PbSe nanorods [60].
Relative uncertainties in responsivity, and the correlation coefficients between them, are identical to those of the external quantum efficiency. Figure 2 is a contour plot of the correlations between the values at different wavelengths (the unity values of self-correlation have been removed).
To further reduce the production cost and enhance the performance of these LEDs, there is always a great need to improve the external quantum efficiency (EQE) and solve the efficiency droop.
Figure 3 shows the total reflectance spectra and external quantum efficiency (EQE) of the GaAs solar cells with and without the InGaP conical frustum nanostructures.
In this regard, in Figure 7 the simulated external quantum efficiency (QE) is presented for 1 sun illumination condition.
However, the external quantum efficiency (EQE) of LEDs, which is defined as the product of internal quantum efficiency and light-extraction efficiency, is still required to be further improved.
Contract notice: Bench external quantum efficiency measurement (EICP)
The external quantum efficiency (EQE) spectra were measured by a Zolix Solar Cell Scan 100.
Tenders are invited for External quantum efficiency (eqe) measurement system for oled device
External Quantum Efficiency. Figure 7 shows the external quantum efficiency spectra of devices.
The new compounds are particularly suitable for the fabrication of OLEDs via cheap solution-processing techniques and have so far reached 27% external quantum efficiency, a record for any solution-processed device.

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