Fig. 3: Reduced recombination due to the presence of Cd(O,S,Se,Te) region. | Nature Communications

Fig. 3: Reduced recombination due to the presence of Cd(O,S,Se,Te) region.

From: 20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction

Fig. 3: Reduced recombination due to the presence of Cd(O,S,Se,Te) region.

a Steady-state PL spectra with different excitation beam wavelengths (405 and 633 nm) entering from the glass side for the (a) control and (b) target devices. c Time-resolved PL (TRPL) and the corresponding 3-exponential fitting curves for the control and target devices. The instrument response function (IRF) is also added as a reference. Note that TRPL was measured using a 633 nm excitation laser excited from the glass side.

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