Compact layer plays a crucial role in transferring electrons and blocking charge recombination between the perovskite layer and fluorine-doped tin oxide (FTO) in PSCs.
For achieving small programing and erasing biases, Chang et al. [44] used high-k oxide dielectrics, such as HfLaO (20 nm), HfON (20 nm), and HfO (6 nm) as the blocking, charge trapping, and tunneling dielectric layers, respectively.
This could be expected taking into account the i) out-of-resonance condition between QD's emission energy of approximately 2 eV and plasmon energy lower than 1 eV in metallic phase of VO2 (negligible energy overlap) and the ii) QD's thick shell (approximately 2 nm) that is blocking charge carrier exchange.
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In the 3-D compound solar cells, the buffer layer between the TiO2 and absorber layer was commonly utilized to block charge recombination between electrons in TiO2 and holes in hole-transport materials [1 4, 9, 10, 12 16].
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This work proposes to add to an electrostatic filter an auxiliary blocking electrode, charged by the same charge as the particles.
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(1) SOI devices are immune to latchup, (2) the volume of the sensitive region (body) and hence total charge collection per transient irradiation is much reduced in SOI devices and (3) the insulating layer blocks charge collection from the substrate (i.e., no funneling effect).
