RHE), the kinetics of holes up to 6 μs show negligible change, suggesting that the catalytic activity of the films is determined by holes with longer lifetimes.
Welcome: WHSC Library Open House on Thursday, Sept. Although APCE increases with more positive bias (from 0.90 to 1.43 V vs. Cassedy Memorial Lecture in the History of Medicine on Thursday, Septemat 2:00 PM ET. TA kinetics shows that under these conditions, >98% of the photogenerated electrons and holes have recombined by 6 μs.
reversible hydrogen electrode, RHE) is 0.69%, significantly lower than that at AM 1.5. Under the pulse illumination conditions of transient absorption (TA) measurement, the absorbed photon to electron conversion efficiency (APCE) of the films at 1.43 V ( vs. Comparison of results from these techniques enables the assignment of the spectral signatures of photogenerated electrons and holes. The spectra and dynamics of photogenerated electrons and holes in excited hematite (α-Fe 2O 3) electrodes are investigated by transient absorption (from visible to infrared and from femto- to micro-seconds), bias-dependent differential absorption and Stark spectroscopy.
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