Photovoltaic detectors curves

Constant instrumental error 1%. Curve A photovoltaic detector. Curve B photomultiplier detector. 

Figure 9.4. Variation of relative error with absorbance. Constant instrumental error 1%. Curve A photovoltaic detector Curve B photomultiplier detector...

Hence, for an absorbance of 0.434, there is a minimum in the relative error of the measurement. Figure 9.4 (curve A) shows how the relative error varies with absorbance (d T= 1%) for a simple instrument incorporating a photovoltaic detector (p. 282). Measurements outside the range 0.2-... 

A photovoltaic detector is often modeled as a current source which produces one hole-electron pair per absorbed photon. The circuit includes the detector s self-capacitance (including the depletion capacitance of the junction within the detector), and a parallel resistance (the inverse of the slope of the current-voltage curve of the detector at the bias point). The resistance and capacitance components... 

Fig. 1.8 Spectral noise density of a photovoltaic InSb detector with 1/f, g-r and Johnson noise ranges. T = 120 K, surface recombination rate on the detector front side 100 cm/s, back side 10 cm/s. Lines theoretical, circles experimental. Curve A magnetic induction B = 0 T curve B B = 0.18 T, Lorentz force directed toward the sample bulk...

---