The phrase "action spectra" is correct and usable in written English.
It is typically used in scientific contexts, particularly in biology and physics, to describe the range of wavelengths of light that can induce a specific biological response or effect.
Example: "The action spectra of photosynthesis reveal which wavelengths of light are most effective for plant growth."
Alternatives: "response spectra" or "activity spectra".
Figure 5 IPCE action spectra of solar cells.
Action spectra, consistent with the literature, were observed with both indicators.
Action spectra revealed that for vacuum UV different kinds of photochemical damage contribute to inactivation and mutation induction.
IPCE action spectra of solar cells made from TiO2 films (10 wt.% TNT, 100 wt.% TNT, and without TNT).
In stratified planar structures, the spatial collection efficiency can be extracted out of photocurrent action spectra measurements empirically, with few a priori assumptions.
Action spectra are recorded for both systems and reveal no evidence of dye-sensitisation, nor dye photolysis over the time scale of the reaction (i.e. ca. 2 min).
Electrochemical impedance and action spectra suggest significant photon to current conversion efficiencies of the material under UV-vis as well as for visible illumination.
Figure 3 Action spectra of photocurrent in presence of TiO 2 and WO 3 /TiO 2 (deposition time = 5 min) thin film electrodes.
The action spectra of the three membrane preparations in the photoelectrochemical cell were also recorded and indicate the pigments involved in photocurrent generation.
The cyclic voltammetry of the NW electrodes in combination with spectroelectrochemical measurements and photocurrent action spectra allows us to devise their electronic structure.
Moreover, the charge transfer and separation of this photocatalyst have been confirmed to obey the Z-scheme mechanism, as supported by the single-wavelength photocurrent action spectra and single-wavelength photoactivities for CO2 conversion.
