Charge extraction

Figure 1. Cuprate-planar Cu charge extracted from the data, versus oxygen content x for YBa2Cu30x, as reported by Cava et al. (Ref. [1]) and by Jorgensen et al. (Ref. [2]). The two data sets do not follow the same line, because of calibration differences. The jump in the data of Ref. [1] occurs for only one datum, and is not reproduced in Ref. [2]. This calls into question claims that high-temperature superconductivity originates in the cuprate-planes.

At ELYSE, the intensity and position of the electron beam is observed upstream of each experimental area by wall current monitors. Ceramic screens are used to indicate the transverse beam profile. The charge per pulse is measured by a moveable Faraday cup. The charge extracted from the CsjTe photo-cathode is 1-8 nC, with a linear slope of 7] = 0.25% electron per 263 nm photon absorbed at laser pulse energies up to 4 pj. At higher laser pulse energies, the current... 

N.B. Dioxygen can be implicated in reactions induced by anodic electron transfers. It is particularly the case in the oxidation of electron-rich double bonds in the presence of molecular oxygen. The reaction below exemplifies such a catalytic process (here in the case of adamantylideneadamantane) with the formation of dioxetane [149, 150]. Note that in this case the reaction is catalytic in electron (i.e. catalytic amount of charge extracted by the anode). 

The third factor that influences the performance of solar cell is the fill factor that relates to the microscale morphology of active layer, charge extraction layer, and posttreatment of deposition process (Guo et al., 2013). The fill factor will also influence the short-circuit current density and open-circuit voltage that are relative to internal series and parallel... 

Transient Charge Extraction Techniques A Comparative Study of TOF andCEUV... 

FIGURE 10.11 Experimental setups and the typical response of the time-of-flight and the charge extraction by linearly increasing voltage technique (CELIV). 

Mozer, A.J., N.S. Sariciftci, L. Lutsen, D. Vanderzande, R. Osterbacka, M. Westerling, and G. Juska. 2005. Charge transport and recombination in bulk heterojunction solar cells studied by the photoinduced charge extraction in linearly increasing voltage technique. AppI Phys left 86 112104. 

Low loss semiconductor PEC electrode materials with appropriate bandgap, absorption properties, and device quantum efficiency are needed for efficient photon absorption and charge extraction. 

Low-cost semiconductor materials with appropriate bandgap and sufficient opto-electronic quality need to be identified and optimized to enable efficient solar energy absorption and charge extraction. 

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